گروه سیستم های تصویربرداری پزشکی: مقالات

 

 

 

 

 

 

Peer-reviewed Journal Publications:

  1. -A Emami, H Ghadiri, P Ghafarian, P Geramifar, MR Ay .,”Performance evaluation of developed dedicated breast PET scanner and improvement of the spatial resolution by wobbling: a Monte Carlo study.”, Japanese journal of radiology,2020.
  2. Isaac Shiri, Hossein Arabi, Parham Geramifar, Ghasem Hajianfar, Pardis Ghafarian, Arman Rahmim, Mohammad Reza Ay & Habib Zaidi., ” Deep-JASC: joint attenuation and scatter correction in whole-body 18F-FDG PET using a deep residual network”, European Journal of Nuclear Medicine and Molecular Imaging, 2020.
  3. Marom Bikson, Colleen A Hanlon, Adam J Woods, Bernadette T Gillick, Leigh Charvet, Claus Lamm, Graziella Madeo, Adrienn Holczer, Jorge Almeida, Andrea Antal, Mohammad Reza Ay., ” Guidelines for TMS/tES clinical services and research through the COVID-19 pandemic”, Brain Stimulation, Elsevier, 2020.
  4. Isaac Shiri, Kiarash AmirMozafari Sabet, Hossein Arabi, Mozhgan Pourkeshavarz, Behnoosh Teimourian, Mohammad Reza Ay, Habib Zaidi Abstract., ” Standard SPECT myocardial perfusion estimation from half-time acquisitions using deep convolutional residual neural networks”, Journal of nuclear cardiology: official publication of the American Society of Nuclear Cardiology, 2020.
  5. Mahnaz Kiani Mobareke, Mohmmadreza Ay., ” 6th Anniversary Editorial”, Frontiers in Biomedical Technologies, 2020.
  6. Getu Ferenji Tadesse, Parham Geramifar, Pardis Ghafarian, Eshetu Ejeta Cheka, Eyachew Misgana Tegaw, Seifu Gizaw Feyisa, Ramin Sadeghi, Mohammad Reza Ay., “Molecular imaging approaches in the diagnosis of breast cancer: A systematic review and meta-analysis”, Iranian Journal of Nuclear Medicine, 2020.
  7. Azadeh Emami, Pardis Ghafarian, Hossien Ghadiri, Parham Geramifar, Mohammad Reza Ay., “Validation and evaluation of a GATE model for MAMMI PET scanner”, Iranian Journal of Nuclear Medicine, 2020.
  8. Mahmoudi, G., Ay, M., Rahmim, A., Ghadiri, H “Computationally efficient system matrix calculation techniques in computed tomography iterative reconstruction”.Jornal of Medical Signals And Sensors ,2020.
  9. Khademi, S., Sarkar, S., Shakeri-Zadeh,Neda, attaran,Sharmin Kharazi,  Mohammadreza Ay, Hossein azimian, Hossein Ghadiri”Corrigendum to “Targeted gold nanoparticles enable molecular CT imaging of head and neck cancer: An in vivo study” (International Journal of Biochemistry and Cell Biology (2019) 114, (S1357272519301256), (10.1016/j.biocel.2019.06.002))” International Journal Of Biochemistry & Cell Biology, 2020.
  10.  Rezaei, S., Ghafarian, P., Bakhshayesh-Karam, M,Uirbe CF, Rahmin A, Sarkar, S., Ay, M.R. “The impact of iterative reconstruction protocol, signal-to-background ratio and background activity on measurement of PET spatial resolution”. Japanese Journal of  Radiology,2020.
  11. Sanaat, A., Zafarghandi, M.S., Ay, M.R, “Design and performance evaluation of high resolution small animal PET scanner based on monolithic crystal: A simulation study”. Journal of Instrumentation, 2019.
  12. ajedi, S., Zeraatkar, N., Kaviani, S., Sabet, H., Ay, M.R.”A novel approach to automatic position calibration for pixelated crystals in gamma imaging”.Iranian Journal of Nuclear Medicine, 2019.
  13.  Sajedi, S., Zeraatkar, N., Taheri, M.,Kaviani, S., Khanmphammadi, H.,Sarkar,S., Sabet, H., Ay, M.R.”Development and preliminary results of Xtrim-PET, a modular cost-effective preclinical scanner”.Nuclear Instruments and Methods in Physics Research Section A. 2019.
  14. Tadesse, G.F., Geramifar, P., Tegaw, E.M., Ay, M.R. “Techniques for generating attenuation map using cardiac SPECT emission data only: a systematic review”. Annals of Nuclear Medicine.  2019.
  15. Sajedi, S., Zeraatkar, N., Kaviani, S., Khanmohammadi , H., Sarkar, S., Sabet, H., Ay, M.R. “A novel approach to automatic position calibration for pixelated crystals in gamma imaging”. .Iranian Journal of Nuclear Medicine,2019.
  16.  Sajedi, S., Zeraatkar, N., Taheri, M., Kaviani, S., Khanmohammadi , H., Sarkar, S., Sabet, H., Ay, M.R. “Development and preliminary results of Xtrim-PET, a modular cost-effective preclinical scanner” . Nuclear Instruments and Methods in Physics Research Section A.  2019.
  17. Sheikhzadeh, P., Ghadiri, H., Geramifar, P., Ghafarian, P., Ay, M.R. ” Design and performance evaluation of spheroid geometry for brain PET scanner using Monte Carlo modeling”. Iranian Journal of Nuclear Medicine, 2019.
  18. Sheikhzadeh, P., Sabet, H., Ghadiri, H., Gramifar, P., Ghafarian, P., Ay, M.R. “Design, optimization and performance evaluation of BM-PET: A simulation study”. Nuclear Instruments and Methods in Physics Research Section A. 2019.
  19. Shiri, I., Ghafarian, P., Geramifar, P.,Leung, KH., Ghelichoghi, M., Ovisi, M., Rahmim, A., Ay, M.R. “Direct attenuation correction of brain PET images using only emission data via a deep convolutional encoder-decoder (Deep-DAC)” .European Radiology. 2019.
  20. Amirrashedi, M., Sarkar, S., Ghafarian, P., Hashemi Shahraki R., Geramifar, P., Zaidi, H., Ay, M.R. “NEMA NU-4 2008 performance evaluation of Xtrim-PET: A prototype SiPM-based preclinical scanner” .Medical Physics. 2019.
  21. Rezaei, S., Ghafarian, P., Jha, A.K., Rahmim A., Sarkar, S., Ay, M.R. ” Joint compensation of motion and partial volume effects by iterative deconvolution incorporating wavelet-based denoising in oncologic PET/CT imaging” Physics Medica. 2019.
  22. Ketabi, A., Ghafarian, P., Mosleh-Shirazi, M.A., Mahdavi, SR.,Rahmim, A., Ay, M.R. ” Impact of image reconstruction methods on quantitative accuracy and variability of FDG-PET volumetric and textural measures in solid tumors” . European Radiology. 2019.
  23. Mahdavi, S.R., Ay, M.R., Zabihzadeh, M., , Shahriari, M., Hoseini-Ghahfarokhi, M. “A full quantitative analysis of 18 MV photon beam from 2100 C/D-Varian clinical linear accelerator with and without flattening filter”.  Iranian Journal of Radiation Research .2019.
  24. Khademi, S., Sarkar, S., Shakeri-Zadeh, A., Attaran N., Kharrazi SH., Ay M.R., Azimian, H., Ghadiri, H. “Targeted gold nanoparticles enable molecular CT imaging of head and neck cancer: An in vivo study”.International Journal Of Biochemistry and Cell Biology, 2019.
  25. B. Teimourian Fard, M. Shamsaei Zafarghandi, S. Hosseini, H. Sabet and M.R. Ay. ” An Alternative Mathematical Modeling of the Scintillation Camera and Framework for Performance Analysis of gamma-ray Positioning Algorithms” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2018, in press
  26. S. Sajedi, N. Zeraatkar, S. Kaviani, H. Khanmohammadi, S. Sarkar, H. Sabet and M.R. Ay.   “A novel approach to automatic position calibration for pixelated crystals in gamma imaging” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2018, in press
  27. P. Sheikhzadeh, H. Ghadiri, P. Geramifar, P. Ghaffarian and M.R. Ay.   ” Design and performance evaluation of spheroid geometry brain PET scanner using Monte Carlo modeling” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2018, in press.
  28. S. Khademi, S. Sarkar, S. Kharrazi, S. Amini, A. Shakeri zadeh, M.R. Ay  and H. Ghadiri, ” Evaluation of size, morphology, concentration, and surface effect of gold nanoparticles on X-ray attenuation in computed tomography ” Phys Med, 2018, Vol. 45, pp 127-133.
  29. R Sharifpour, P Ghafarian, M. Bakhshayesh karam, H. Jamaati and M.R. Ay ” Impact of Time-of-Flight and Point-Spread-Function for Respiratory Artifact Reduction in PET/CT Imaging: Focus on Standardized Uptake Value” Tanaffos, 2017, Vol. 16, pp 127-135.
  30. N. Zeraatkar, S. Sajedi, B. Teimorian, S. Kaviani, A. Akbarzadeh, N, M. H. Farahani,  B.  S. Sarkar and M.R. Ay. ” Development and calibration of a new gamma camera detector using large square Photomultiplier Tubes” Journal of Instrument, 2017, online
  31.  Z. Etemadi, P. Ghafarian, A. Bitarafan-Rajabi, H. Malek, A. Rahmim and M.R. Ay. “Is correction for metallic artefacts mandatory in cardiac SPECT/CT imaging in the presence of pacemaker and implantable cardioverter defibrillator leads?” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2018, Vol. 26, No. 1,  pp 35-46.
  32. H Hemmati, A Kamali-Asl, M.R. Ay and P Ghafarian ” Compton scatter tomography in TOF-PET “Physics in Medicine and Biology, 2017, online .
  33. R Sharifpour, P Ghafarian, A Rahmim and M.R. Ay. ” Quantification and reduction of respiratory induced artifacts in positron emission tomography/computed tomography using the time-of-flight technique.” Nuclear Medicine Communications, 2017, online.
  34. P. Sheikhzadeh, H. Sabet, H. Ghadiri, P. Geramifar, H.  Mahani, P. Ghafarian, and M.R. Ay. “Development and validation of an accurate GATE model for NeuroPET scanner” Phys Med, 2017, Vol. 40, pp 59-65 
  35.  Mahani, G. Raisali, A. Kamali-Asl and M.R. Ay. “Spinning slithole collimation for high-sensitivity small animal SPECT: Design and assessment using GATE simulation”Phys Med, 2017, Vol. 40, pp 42-50 .
  36.  N. Zaraatkar, A. Rahmim, S. Sarkar  and M.R. Ay. ” Development and Evaluation of Image Reconstruction Algorithms for a Novel Desktop SPECT System” Asia Ocean J Nucl Med Biol, 2017, Vol. 5, No.2, pp 126-140. 
  37.  M. Shekari, P. Ghafarian, S. Ahangari and M.R. Ay. ” Quantification of the impact of time of flight and point spread function on PET images using noise matching concept: clinical and phantom study ” Nuclear Science and Techniques, 2017, Vol. 28, pp 167-174. 
  38. S. Khorasani, N. Vosughi, K. Tanha, M. Assadi, P. Ghafarian, A. Rahmim M.R. Ay.  Implementation of absolute quantification in small-animal SPECT imaging: Phantom and animal studies” Journal of Applied Clinical Medical Physics, 2017, Vol. 18, pp 215-223 .
  39. Salehi, E. Fatemizadeh, M. Farhanai, A. Akbarzadeh, S. Farzanefar and M.R. Ay. “Cardiac Contraction Motion Correction in Gated Myocardial Perfusion SPECT Projection Domain” Frontiers in Biomedical Technologies, 2015, Vol.  2, pp 206-21.
  40. S. Kaviani, N. Zeraatkar, S. Sajedi, N. Gorjizadeh, M. H. Farahani, P. Ghafarian, G. El fakhri, H. Sabet and M.R. Ay. ” Development and characterization of a compact hand-held gamma probe system, SURGEOGUIDE, based on NEMA NU3-2004 standards ” Journal of Instrument, 2016, Vol. 11, No.12, pp 1-14. 
  41. Zargan, P. Ghafarian, A. Monfared, A. Sharafi, M. Bakhshayesh karam and M.R. Ay. “valuation of Radiation Exposure to Staff and Environment Dose from [18F]-FDG in PET/CT and Cyclotron Center using Thermoluminescent Dosimetry” Journal of Biomedical Physics & Engineering , 2017, Vol. 7, No.1, pp 1-12. 
  42. P. Ghobadi, A. Ahmadian, H. saberi, M.R. Ay, M. Addolghafar and K. Amini. “A hybrid tracking system for image-guided spine surgery using a tracked mobile C-arm: a phantom study” Turk J Elec Eng & Comp Sci, 2017, Vol. 25, pp 434-448. 
  43. A. Akbarzadeh, V. Saba, and M.R. Ay. ” New approach for calibration of pixelated scintillation detectors of intraoperative gamma cameras” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2017, Vol. 25, No. 1, pp 34-42. 
  44. H. Mahani, G. Raisali, A. Kamali, and M.R. Ay. “Monte Carlo Optimization of Crystal Configuration for Pixelated Molecular SPECT Scanners” Nuclear. Instrumentation Methods in Physics Research A, 2017, Vol. 844, 1–6 .
  45. Shandiz, H. Saligeh Rad, P. Ghafarian, M. Bakhshaysh Karam and M.R. Ay. “MR-guided attenuation correction for prostate PET-MRI: an intensity and morphologic-based segmentation approach for generating a five-class attenuation map in pelvic region “Annals of Nuclear Medicine, 2016;31(1):29-39. 
  46.  H. Mahani, G. Raisali, A. Kamali, and M.R. Ay. “Collimator-Detector Response Compensation in Molecular SPECT Reconstruction using STIR Framework?” Iranian Journal of Nuclear Medicine and Molecular Imaging, 2017;25(Suppl 1):26-34. 
  47. A. Fathi, M.R. Ay, S. Arfaei, and P. Khateri and H. Salighe Rad ” Single STE-MR Acquisition in MR-Based Attenuation Correction of Brain PET Imaging Employing a Fully Automated and Reproducible Level-Set Segmentation Approach” Molecular Imaging & Biology, 2017, Vol. 19, No. 1, pp 143-152. 
  48. H. Mahani, G. Raisali, A. Kamali, and M.R. Ay. ” How Crystal Configuration Affects the Position Detection Accuracy in Pixelated Molecular SPECT Imaging Systems?” Nuclear Science and Techniques, 2017, 28:47.
  49. S.Kaviani, N. Zeraatkar, S. Sajedi, A. Akbarzadeh, N. Gorjizadeh, M. H. Farahani,  B.  Teimourian, P. Ghafarian, H. Sabet and M.R. Ay. “Design and development of a dedicated portable gamma camera system for intra-operative imaging “Phys Med, 2016, Vol. 32, pp 889-897. 
  50. N. Zeraatkar, M. H. Farahani, S. Sarkar, A. Rahmim and M.R. Ay. ” Design and Assessment of a Novel SPECT System for Desktop Open-Gantry Imaging of Small Animals: a Monte Carlo Study ” Medical Physics, 2016, Vol. 43, No. 5, pp 2581-2597. 
  51. S. Gholami, H. Nedaie, F. Longo, M. R. Ay, S. Wright and A. S. Meigooni. “Is Grid Therapy Useful for all Tumors and Every Grid Block Design? ” Journal of Applied Clinical Medical Physics, 2016, Vol. 17, No. 2, pp 1-14. 
  52. P. Khateri, H. Saligheh Rad, A. H. Jafari, A. Fathi Kazerooni, A. Akbarzadeh, M. Shojae Moghadam, A. Aryan, P. Ghafarian, M. R. Ay ” Generation of 4-Class Attenuation Map for MRI Based Attenuation Correction of PET Data in the Head Area Using a Novel Combination of STE/DIXON-MRI and FCM Clustering”  Molecular Imaging & Biology, 2015, Vol. 17, pp 884-892. 
  53. S. Ahangari, P. Ghafarian, M. Shekari, H. Ghadiri, M. Bakhshayeshkaram and M.R. Ay  ” The Impact of Point Spread Function Modeling on Scan Duration in PET Imaging ” Frontiers in Biomedical Technologies, 2015, Vol. 2, No. 3, pp 137-145.
  54. shekari, P. Ghafarian, S. Ahangari, H. Ghadiri, M. Bakhshayeshkaram and M.R. Ay  “Optimizing Image Reconstruction Parameters in Time of Flight PET/CT Imaging: a Phantom Study ” Frontiers in Biomedical Technologies, 2015, Vol. 2, No. 3, pp 146-154.
  55. H. Arabi, A.R. Kamali Asl, M. R. Ay and H. Zaidi ” Monte Carlo-based Assessment of the Trade-off between Spatial Resolution, Field-of-View and Scattered Radiation in the Variable Resolution X-ray CT Scanner ” Phys Med, 2015, Vol. 31, pp 510-516. 
  56. H. Mahani, A. Kamali-Asl, M.R. Ay  “How Gamma Camera’s Head-Tilts Affect Image Quality of a Nuclear Scintigram?” Frontiers in Biomedical Technologies, 2014, Vol. 1, No. 4, pp 265-270. 
  57. M. Zabihzadeh, S.R. Mahdavi, M.R. Ay and Z. Shakarami ” The Effects of Backscattered Radiation into Beam Monitor Chamber: Study of 6 and 18 MV Conventional and Removed Flattening Filter Clinical Accelerator ” BIOSCIENCES BIOTECHNOLOGY RESEARCH ASIA, 2015, Vol. 12, pp 25-36. 
  58.  M. Zabihzadeh, S.R. Mahdavi, M.R. Ay and Z. Shakarami ” Monte Carlo Calculation of Neutron Doses to Organs of a Female Undergoing A Pelvic 18 MV Irradiation ” Biomedical & Pharmacology Journal, 2015, Vol. 8, pp 65-71. 
  59. P. Ghafarian, M.R. Ay  “The Influence of PET and CT Misalignment due to Respiratory Motion on the Cardiac PET/CT Imaging: a Simulation Study” Frontiers in Biomedical Technologies, 2014, Vol. 1, No. 4, pp 252-257. 
  60. V. Moji, N. Zeraatkar, M.H. Farahani, M. Aghamiri, S. Sajedi, B. Teymorian, P. Ghafarian , S. Sarkar and M.R. Ay ” Performance Evaluation of Newly Developed High Resolution Dual Head Animal SPECT System Based on NEMA NU2 2007 Standard ” J Appl Clin Med Phys, 2014, Vol. 15, No. 6, pp 267-278. 
  61. N. Zeraatkar, S. Sajedi, M. H. Farahani, H. Arabi, S. Sarkar, P. Ghafarian, A. Rahmim and M.R. Ay”Resolution-Recovery-Embedded Image Reconstruction for a High-Resolution Animal SPECT System ” Phys Med, 2014, Vol. 30, No. 7, pp 774-781. 
  62. P. Ghafarian, M.R. Ay, A. Fard-Esfahani, A. Rahmim and H. Zaidi ” Quantification of PET and CT misalignment errors due to bulk motion in cardiac PET/CT imaging: Phantom and clinical studies ” Frontiers in Biomedical Technologies, 2014, Vol. 1, No. 3, pp 159-167. 
  63.  A. M. Pashazadeh, K. Tanha, F. Jafarian Dehkordi, M. Assadi, V. Moji , N. Zeraatkar and M.R. Ay “Experimental Evaluation of the Performance of HiReSPECT Scanner: a High-Resolution SPECT System for Small Animal Imaging” Frontiers in Biomedical Technologies, 2014, Vol. 1, No. 3, pp 222-227. 
  64. H. Ghadiri, MB Shiran, HR Soltanian-Zadeh, A. Rahmim, H. Zaidi and M.R. Ay ” Derivation of attenuation map for attenuation correction of PET data in the presence of nanoparticulate contrast agents using spectral CT imaging ” Annals of Nuclear Medicine, 2014, Vol. 28, No. 6, pp 559-570. 
  65. Sajedi, N. Zeraatkar, V. Moji,  M. H. Farahani, S. Sarkar,  H. Arabi, B. Teymoorian, P. Ghafarian, A. Rahmim and M.R. Ay “Design and Development of a High Resolution Animal SPECT Scanner Dedicated for Rat and Mouse Imaging”, Nuclear. Instrumentation Methods in Physics Research A, 2014, Vol. 741, pp 169-176.
  66.  M. R. Ay, A. Akbarzadeh, A. Ahmadian and H. Zaidi “Classification of bones from MR images in torso PET-MR imaging using a statistical shape model”, Nuclear. Instrumentation Methods in Physics Research A, 2014, Vol. 734, pp 196-200. 
  67. P. Khateri, H. Saligeh Rad, A.H. Jafari and M.R. Ay ” A Novel Segmentation Approach for Implementation of MRAC in Head PET/MRI Employing Short-TE MRI and 2-Point Dixon Method in a Fuzzy C-Means Framework”, Nuclear Instrumentation Methods in Physics Research A, 2014, Vol. 734, No. 8, pp 171-174 .
  68. H Ghadiri, M. R. Ay , M. B. Shiran, H. R. Soltanian-Zadeh and H Zaidi ” K-edge ratio method for identification of multiple nanoparticulate contrast agents by spectral CT imaging ” British Journal of Radiology, 2013,  Vol. 86, No. 1029, in press.
  69. A. Mehranian, M. R. Ay, A. Rahmim  and H. Zaidi  “3D Prior Image Constrained Projection Completion for X-ray CT Metal Artifact Reduction ” IEEE Trans Nuclear Sciences, 2013,  Vol. 60, No. 5, pp 3318-3332. 
  70. A. Mehranian, H. Salighe Rad, A. Rahmim, M. R. Ay and H. Zaidi “Smoothly Clipped Absolute Deviation (SCAD) Regularization for Compressed Sensing MRI Using an Augmented Lagrangian Scheme”  Magnetic Resonance Imaging, 2013, Vol. 31, No. 8, pp 1399-1411. 
  71. P. Geramifar, M. Shamsaie Zafarghandi, P. Ghafarian, A. Rahmim and M. R. Ay “Respiratory-Induced Errors in Tumor Quantification and Delineation in CT Attenuation Corrected PET Images: Effects of Tumor Size, Tumor Location and Respiratory Trace – A Simulation Study Using the 4D XCAT Phantom”  Molecular Imaging & Biology, 2013, Vol. 15, No. 6, pp 655-665. 
  72.  A. Mehranian, M. R. Ay, A. Rahmim  and H. Zaidi  “X-ray CT metal artifact reduction using wavelet domain L0 sparse regularization” IEEE Trans Med Imaging, 2013, Vol. 32, No. 9, pp 1707-1722. 
  73. of whole-body MR to CT deformable image registration”  J Appl Clin Med Phys, 2013, Vol. 14, No. 4, pp 238-253. 
  74. A. Mehranian, A. Rahmim , M. R. Ay, F. Kotasidis and H. Zaidi “An ordered-subsets proximal preconditioned gradient algorithm for edge-preserving PET image reconstruction” Medical  Physics 2013, Vol. 40, No. 5, pp 052503-14. 
  75.  A. Akbarzadeh, M. R. Ay, A. Ahmadian, N. Riahi Alam and H. Zaidi “MRI-guided attenuation correction in whole-body PET/MR: Assessment of the effect of bone attenuation”, Annals of Nuclear Medicine, 2013, Vol. 27, pp. 152-162.
  76.  S. Vaezzadeh, M. Allahverdi, H. Nedaei, M. R. Ay, A. Shirazi and M. Yarahmadi “EBT GHAFCROMIC film dosimetry in compensator-based intensity modulation radiation therapy”, Medical Dosimetry , 2013, Vol. 38, pp. 176-183.
  77.  S. Sajedi, A. Kamali Asl, M. R. Ay, M.H. Farahani and A. Rahmim “A novel non-linear recursive filter design for extracting high rate pulse features in nuclear medicine imaging and spectroscopy”, Medical Engineers & Physics , 2013, Vol. 35, No.6, pp. 754-764.
  78.  P. Khateri, H. Saligeh Rad, A, Fathi and M.R. Ay “Generation of attenuation map for MR-based attenuation correction of PET data in the head area employing 3D short echo time MR imaging”, Nuclear. Instrumentation Methods in Physics Research A, 2012, Vol. 702, No.21, pp. 133-136.
  79. M. R. Ay, A. Mehranian, A. Maleki, H. Ghadiri,P. Ghafarian and H. Zaidi  “Experimental assessment of the influence of beam hardening filters on image quality and patient dose in volumetric 64-slice x-ray CT scanners”, Phys Med , 2013, Vol. 29, pp. 249-260.
  80.  N. Ghazanfari, S. Sarkar, G. Loudos, M.R. Ay ” Quantitative assessment of the influence of crystal material and size on the performance of rotating dual head small animal PET scanners: Monte Carlo modeling” Hellenic Journal of Nuclear Medicine, 2012, Vol. 15, No. 1, pp. 33-39.
  81. B. Teimourian , M. R. Ay, M. Shamsaei-Zafarghandi, P. Ghafarian, H. Ghadiri and H. Zaidi  “A novel energy mapping approach for CT-based attenuation correction in PET” Med Phys 2012, Vol. 39, No. 4, pp2078-2089.
  82. F. Kalantari, H. Rajabi, M. R. Ay, A. Fard Esfahani,  M. Eftekhari, B. Fallahi, A. Emami Ardekani” The infuence of resolution recovery by using collimator detector response during 3D OSEM image reconstruction on 99mTc-ECD brain SPET images ”  Hellenic Journal of Nuclear Medicine, 2012, Vol. 15, No. 2, pp. 91-96.
  83. N. Zeraatkar, M. R. Ay, P. Ghafarian, S. Sarkar, P. Geramifar, and A. Rahmim “Monte Carlo-based evaluation of inter-crystal scatter and penetration in the PET subsystem of three GE Discovery PET/CT scanners” Nuclear. Instrumentation Methods in Physics Research A, 2011, Vol. 659, pp. 508-514.
  84. M.A. Habibzadeh, M.R. Ay, A.R. Kamali Asl, H. Ghadiri and H. Zaidi H “Impact of miscentering on patient dose and image noise in x-ray CT imaging: Phantom and clinical studies” Phys Med Vol. 28, 2012, pp. 191-199.
  85. E.  Saeedzadeh, S. Sarkar, A. Abbaspour Tehrani-Fard, M.R. Ay, H.R. Khosravi, G. Loudos “3D Calculation of Absorbed Dose for 131I Targeted Radiotherapy: A Monte Carlo Study” Radiation Protection Dosimetry, 2012, 150, pp. 298-305.
  86. F. Vedaei, A. Kamali asl, F. Kalantari, M. Ansari, M.R. Ay ” Assessment of the impact of applying attenuation correction on the accuracy of activity recovery in Tc99m-ECD brain SPECT of healthy subject using Statistical Parametric Mapping (SPM) “ Iranian Journal of Nuclear Medicine, 2011, 19, pp. 52-59.
  87. M.R. Ay, A. Mehranian, M. Abdoli, P. Ghafarian  and H. Zaidi “Qualitative and quantitative assessment of metal artefacts arising from implantable cardiac pacing devices in oncological PET/CT studies: A phantom study” Molecular Imaging & Biology, 2011, Vol. 13, pp. 1077-1088.
  88. P. Geramifar, M.R. Ay, M. Shamsaie Zafarghandi, S. Sarkar, G. Loudos, A. Rahmim, “Investigation of Time-of-Flight Benefits on the LYSO-Based PET/CT Scanner: A Monte Carlo Study Using GATE “Nuclear. Instrumentation Methods in Physics Research A , 2011 Vol. 641, pp. 121-127.
  89. M. R. Ay, M. Shirmohammad, S. Sarkar, A. Rahmim, H. Zaidi, “Comparative assessment of energy-mapping approaches in CT-based attenuation correction for PET” Molecular Imaging & Biology, 2011, Vol. 13, pp. 187-198.
  90. H. Arabi, A Kamaliasl, M.R. Ay and H. Zaidi, ” Novel detector design for reducing inter-cell x-ray cross-talk in the variable resolution x-ray CT scanner: A Monte Carlo study “ Medical Physics, 2011, Vol. 30 pp. 1389-1396.
  91. N. Zeratkar, M.R. Ay, A Kamaliasl and H. Zaidi, ” Accurate Monte Carlo modeling and performance assessment of the X-PET™ subsystem of the FLEX Triumph™ preclinical PET/CT scanner” Medical Physics, 2011, Vol. 38, No 3, pp 1217-1225.
  92. M. Abdoli, M.R. Ay, A. Ahmadian,  A. J. O. Dierckx and H. Zaidi “Reduction of dental filling metallic artefacts in CT-based attenuation correction of PET data using weighted virtual sinograms optimized by a genetic algorithm” Medical Physics, 2010, Vol. 37, No 12, pp 6166-6177.
  93. P. Ghafarian, S.M.R. Aghamiri, M.R. Ay, A. Rahmim, T. Schindler, O. Ratib and H. Zaidi ” Is Metal Artifact Reduction Mandatory in Cardiac PET/CT Imaging in the Presence of Pacemaker and Implantable Cardioverter Defibrillator leads? “ European Journal of Nuclear Medicine and Molecular Imaging, 2011, Vol. 38, No. 2, pp 252-262.
  94. R. Prasad, M.R. Ay, O. Ratib and H. Zaidi  “CT-based attenuation correction on the FLEX Triumph™ preclinical PET/CT scanner” IEEE Trans Nuclear Sciences, 2011,  Vol. 58 pp 66-75.
  95. M. Allahverdi, M. Zabih Zadeh, M.R. Ay, S.R. Mahdavi, M. Shahriari , A. Mesbahi and H. Alijanzadeh, ” Monte Carlo estimation of electron contamination in a 18MV clinical photon beam”, Iranian Journal of Radiation Research, 2011, Vol. 9 pp 15-28. 
  96. M. Rasouli, A. Takavar, M.R. Ay, S. Saber, and G. Loudos, “ Effects of Crystal Pixel Size and Collimator Geometry on the Performance of a Pixelated Crystal Gamma Camera Using Monte Carlo Simulation ” Journal of Nuclear Medicine Technology, 2010,  Vol. 38, No 4,  pp 199-204.
  97. P. Ghafarian, S.M.R. Aghamiri, M.R. Ay, B. Fallahi, A. Rahmim, T. Schindler, O. Ratib and H. Zaidi “Coronary calcium score scan-based attenuation correction in cardiovascular PET imaging” Nuclear Medicine Communication, 2010, Vol. 31, No 9, pp 780-787.
  98. A. Akbarzadeh, M. R. Ay, H. Ghadiri, S. Sarkar and H. Zaidi, “Measurement of scattered radiation in a volumetric 64-slice CT scanner using three experimental techniques” Physics Medicine and Biology, 2010, 55, 2269-2280.
  99. A. Mehranian, M.R. Ay, N. Riahi and H. Zaidi, “Quantifying the effect of anode surface roughness on diagnostic x-ray spectra using Monte Carlo simulation” Medical Physics, 2010, 37, 742-752.
  100. B. Teymoorian, M.R. Ay, M. Shamsaei Zafarghandi and  H. Ghadiri, ” A Novel Dual Energy CT-Based Attenuation Correction Method in PET/CT Systems: A Phantom Study” Iranian Journal of Nuclear Medicine, 2009, 17, 42-49.
  101. P. Geramifar, M.R. Ay, M. Shamsaie Zafarghandi,G. Loudos, A. Rahmim, ” Performance Comparison of Four Commercial GE Discovery PET/CT Scanners: A Monte Carlo Study Using GATE” Iranian Journal of Nuclear Medicine, 2009, 17, 26-33.
  102. Artefacts in CT-based Attenuation Correction for PET” Nuclear Medicine Communication, 2010, 31,  22-31.
  103.  M. Zabih Zadeh, M.R. Ay, M. Allahverdi, A. Mesbahi, S.R. Mahdavi and M. Shahriari, “Monte Carlo Estimation of  Photoneotrons Contamination from High Energy Medical Accelerator in Threatment Room and Maze: A Simplified Model”, Radiation Detection Dosimetry, 2009, 135, 21-32.
  104. T. Allahverdi, M. Allahverdi, N. Riahi Alam, M.R. Ay, M. Zahmatkesh, ” Differential Dose Volume Histograms of Gamma Knife in Presence of Inhomogeneities Using MRI- polymer Gel Dosimetry and MC Simulation”, Medical Physics, 2009, 36,3002-3012.
  105.  A. Akbarzadeh, M.R.Ay, H. Ghadiri, S.Sarkar, “A new method for experimental characterization of scattered radiation in 64-slice CT scanner” Biomedical Imaging and Intervention Journal, 2010, 6(1):e3.
  106.  T. Allahverdi, M. Allahverdi, N. Riahi Alam, M.R. Ay, M. Zahmatkesh, ” Verifying the accuracy of dose distribution in Gamma Knife unit in presence of inhomogeneities using PAGAT polymer gel dosimeter and MC simulation “, Iranian J. of Radiation Research, 2009, 7, 49-56.
  107.   A. Akbarzadeh, M.R. Ay , H. Ghadiri, S. Sarkar, “Calculation Of Scattered Radiation Profile In 64 Slice CT Scanners Using Experimental Measurement”, Iran J. Medical Physics , 2010, 6, 1-10.
  108.  L. Karimi-Afshar, N. Riahi Alam, M.R.Ay, M. Allahverdi, T. Purfallah, H. Hashemi, A. Farahani, B. Efie, M. Bakhteiari, “Evaluation of MRI-based Polymer Gel Dosimetry for Measurement of CT Dose Index (CTDI) on 64 slices CT Scanners”,  Iran J. Medical Physics , 2010, 6, 59-70.
  109.  T. Allahverdi, M. Allahverdi, N. Riahi Alam, M.R. Ay, M. Zahmatkesh, “Evaluation of Dose Delivery Accuracy of Gamma Knife Using MRI Polymer Gel Dosimeter in an Inhomogeneous Phantom”, Journal of Physics: Conference Series 164, 2009, doi:10.1088/1742-6596/164/1/012066.
  110.  M. Shirmohammad, M.R. Ay, S. Sarkar and A. Rahmim, ” Comparing 511 keV attenuation maps obtained from different energy mapping methods for CT based attenuation correction of PET data”, Iran J. Medical Physics , 2008,5, 23-34.
  111.  T. Allahverdi, M. Allahverdi, N. Riahi Alam, M.R. Ay, M. Zahmatkesh and J.S. Ibbott, “Performance evaluation of MRI-based PAGAT polymer gel dosimeter in an  inhomogeneous phantom using EGSnrc code on a co-60 machine”, Applied Radiation and Isotopes, 2009, 67, 186-191.
  112.  S. Lashkari, S. Sarkar,  M.R. Ay, R. Rahmim, ”  The Influence of Crystal Material on Intercrystal Scattering and the Parallax Effect in  PET Block Detectors: A Monte Carlo Study”,  Iran J. Medical Physics , 2008, 21, 67-76.
  113. A. Rahmim, J. Tang, M. A. Lodge, S. Lashkari, M.R. Ay, R. Lautamaki, B. M. W. Tsui, and F. Bengel “Analytic System Matrix Resolution Modeling in PET: An Application to Rb-82 Myocardial Perfusion Imaging”, Physics in Medicine and Biology, 2008, 53, 5947-5965.
  114. A. Ahmadian, M.R. Ay, J.H. Bidgoli, S. Sarkar and H. Zaidi  “Correction of oral contrast artefacts in CT-based attenuation correction of PET images using an automated segmentation algorithm” European Journal of Nuclear Medicine and Molecular Imaging, 2008, 35, 1812-1823.
  115.   M.R. Ay and S. Sarkar, “Computed Tomography Based Attenuation Correction in PET/CT: Principles, Instrumentation, Protocols, Artifacts and Future Trends”, Iranian J. Nucl. Med., 2007, 15, 1-29.
  116. H.Zaidi and M.R. Ay, “Current status and new horizons in Monte Carlo simulation of x-ray CT scanners” Medical & Biological Engineering & Computing , 2007, 45, 809-817.
  117. M.R. Ay and H. Zaidi, “Impact of x-ray tube settings and metallic leads on neurological PET imaging when using CT-based attenuation correction”, Nuclear. Instrumentation Methods in Physics Research A , 2007, 571, 411-417.
  118.  M.R. Ay and H. Zaidi, “Computed tomography-based attenuation correction in neurological positron emission tomography: evaluation of the effect of x-ray tube voltage on quantitative analysis”. Nuclear Medicine Communication, 2006, 27339-346.
  119.  M.R. Ay and H. Zaidi, “Assessment of errors caused by x-ray scatter and use of contrast medium when using CT-based attenuation correction in PET”. European Journal of Nuclear Medicine and Molecular Imaging, 2006, 33 (11), 1301-1313.
  120. M.R. Ay and H. Zaidi, “Development and validation of MCNP4C-based Monte Carlo simulator for fan- and cone-beam x-ray CT”. Physics in Medicine and Biology, 2005. 50(20): pp. 4863-4885.
  121.  M.R. AyS. Sarkar, M. Shahriari, D. Sardari, and H. Zaidi, “Assessment of different computational models for generation of x-ray spectra in diagnostic radiology and mammography”, Medical Physics32(6), pp. 1660-1675, 2005.
  122. M.R. Ay, M. Shahriari, S. Sarkar, , M. Adib and H. Zaidi, “Monte Carlo simulation of x-ray spectra in diagnostic radiology and mammography using MCNP4C”, Physics in Medicine and Biology, 49(19) pp. 4897-4917, 2004.
  123.  M.R. Ay, S. Sarkar, M. Shahriari and P. Ghafarian, “Measurement of Organ Dose in Abdomen-Pelvis CT Exam as a Function of mA, KVp and Scanner Type by Monte Carlo Method”, Iranian J. of Radiation Research1(4), 187-194, 2004.
 

 

Proceeding and Conference Records:

 1-            H Ghadiri, M B Shiran, H R Soltanian-Zadeh, A Rahmim and M R Ay ” A Fast and Hardware Mimicking Analytic CT Simulator” IEEE Nuclear Science Symposium & Medical Imaging Conference, Seoul, South Korea, 2013, pp 1-5.

 2-            Mehranian A, H. Salighe Rad, M.R. Ay , Rahmim A, and Zaidi H ” Smoothly Clipped Absolute Deviation (SCAD) Regularization for Compressed Sensing MRI Using an Augmented Lagrangian Scheme ” IEEE Nuclear Science Symposium & Medical Imaging Conference, Anaheim, CA, USA, 2012, pp 3646-3653.

 3-            Mehranian A, M.R. Ay , Rahmim A, and Zaidi H ” An Ordered-Subsets Proximal Preconditioned Gradient Algorithm for Total Variation Regularized PET Image Reconstruction” IEEE Nuclear Science Symposium & Medical Imaging Conference, Anaheim, CA, USA, 2012, pp 3375-3382.

 4-            Akbarzadeh A, M.R. Ay, Ahmadian A, Riahi Alam N and Zaidi H “Impact of tissue classification on the accuracy of MR-based attenuation correction in PET-MRI” IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 2524–2530.

 5-            Mehranian A, M.R. Ay , Rahmim A, and Zaidi H “Sparsity constrained sinogram inpainting for metal artifact reduction in x-ray computed tomography” IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 3694–3699.

6-           Najafi Darmian A, M.R. Ay, Ghafarian P, Pouladian M, Shirazi A, Ghadiri H, Akbarzadeh A and Zaidi H “Characterization of scattered radiation profile in volumetric 64-slice x-ray CT scanner: A Monte Carlo study” IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 2692–2696.

7-            Mehranian A, M.R. Ay, Rahmim A and Zaidi H “Metal artifact reduction in CT-based attenuation correction of PET using Sobolev sinogram restoration” IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 2936-2942.

 8-            Ghadiri H, Shiran MB, M.R. Ay, Soltanian-Zadeh H and Zaidi H “A novel energy mapping approach in CT-based attenuation correction of PET data using multi-energy CT imaging” IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 2510-2515.

 9-            A. Emami, H. Ghadiri, M.R. Ay, S. Akhlagpour, A. Eslami, P. Ghafarian and S. Taghizadeh  “A Novel Phantom for Accurate Performance Assessment of Bone Mineral Measurement Techniques: DEXA and QCT “, IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 3441-3445.

10-          H. Mohy-ud-Din, N. Karakatsanis, C. Endres, M. R. Ay, D. F. Wong, and A. Rahmim  ” Generalized inter-frame and intra-frame motion correction in dynamic PET imaging”, IEEE Nuclear Science Symposium & Medical Imaging Conference, Valencia, Spain, 23-29 October 2011, p. 3858-3862.

11-          Khodadad D, Ahmadian A, M.R. Ay, Esfahani AF, Banaem HY and Zaidi H “B-spline based free form deformation thoracic non-rigid registration of CT and PET images”, International Conference on Graphic and Image Processing (ICGIP 2011), 1-3 October 2011, Cairo, Egypt, Proc. SPIE, Vol. 8285, pp 82851K.

12-          N. Ghazanfari, M.R. Ay, N. Zeraatkar, S. Sarkar and G. Loudos, ” Quantitative Assessment of the influence of crystal material and size on the Inter Crystal Scattering and Penetration effect in pixilated dual head small animal PET scanner”, 5th Kuala Lumpur International Conference on Biomedical Engineering, 20-23 June 2011, Kuala Lumpur, Malaysia, IFMBE Proceedings 35, p. 712-715.

13-          F. Adibpour, M.R. Ay, S. Sarkar and G. Loudos, ” Quantification  of Inter-crystal Scattering and Parallax Effect in Pixelated High Resolution Small Animal Gamma Camera: A Monte Carlo Study “, 5th Kuala Lumpur International Conference on Biomedical Engineering, 20-23 June 2011, Kuala Lumpur, Malaysia, IFMBE Proceedings 35, p. 708-711

14-          A. Emami, H. Ghadiri, M.R. Ay, S. Akhlagpour, A. Eslami, P. Ghafarian and S. Taghizadeh  “A Novel Phantom for Accurate Performance Assessment of Bone Mineral Measurement Techniques: DEXA and QCT “, 5th Kuala Lumpur International Conference on Biomedical Engineering, 20-23 June 2011, Kuala Lumpur, Malaysia, IFMBE Proceedings 35, p. 47-50

15-          N. Zeraatkar, M.R. Ay, S. Sarkar, P. Geramifar and A. Rahmim, “Quantification of Inter-Crystal Scatter and Penetration Events in GE Discovery RX PET/CT Scanner: a Monte Carlo Simulation “, IEEE Nuclear Science Symposium & Medical Imaging Conference, Knoxville, Tennessee, 2010, pp. 2403-2408

16-          A. Rahmim, J. Tang, M.R. Ay and F. M. Bengel,  ” 4D Respiratory motion-corrected Rb-82 myocardial perfusion PET imaging “, IEEE Nuclear Science Symposium & Medical Imaging Conference, Knoxville, Tennessee, 2010, pp. 3312-3316

17-          A. Najafi Darmian, M.R. Ay, M. Pouladian, A. Shirazi, H.Ghadiri and A. Akbarzadeh”Monte Carlo Characterization of  Scattered radiation profile in Volumetric 64 slice CT using GATE”, 5th Kuala Lumpur International Conference on Biomedical Engineering, 20-23 June 2011, Kuala Lumpur, Malaysia, IFMBE Proceedings 35, p. 694-697

18-          B. Teimourian, M.R. Ay, H. Ghadiri, M. Shamsaei Zafarghandi and H. Zaidi “A Novel Approach for Implementation of Dual Energy Mapping Technique in CT-Based Attenuation Correction Using Single kVP Imaging: A Feasibility Study”  The 12th Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), Chalkidiki, Greece, MEDICON 2010, IFMBE Proceedings 29, pp. 220–223, 2010.

19-          S.M. Akbari, M.R. Ay, A. Kamali Asl, H. Ghadiri and H. Zaidi ” Experimental Measurement of Modulation Transfer Function (MTF) in Five Commercial CT Scanners”  The 12th Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), Chalkidiki, Greece, MEDICON 2010, IFMBE Proceedings 29, pp. 351–354, 2010.

 20-          A. Mehranian, M.R. Ay and H. Zaidi ” CT2MCNP: An Integrated Package for Constructing Patient-Specific Voxel-Based Phantoms Dedicated for MCNP(X) Monte Carlo Code”  The 12th Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), Chalkidiki, Greece, MEDICON 2010, IFMBE Proceedings 29, pp. 319–322, 2010.

 21-          M.A. Habibzadeh, M.R. Ay, A. Kamali Asl, H. Ghadiri and H. Zaidi” The Influence of Patient Miscentering on Patient Dose and Image Noise in Two Commercial CT Scanners”  The 12th Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), Chalkidiki, Greece, MEDICON 2010, IFMBE Proceedings 29, pp. 327–330, 2010.

22-          N. Zeraatkar, M.R. Ay, A. Kamali-Asl and H. Zaidi” A Novel Model for Monte Carlo Simulation of Performance Parameters of the Rodent Research PET (RRPET) Camera Based on NEMA NU-4 Standards”  The 12th Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), Chalkidiki, Greece, MEDICON 2010, IFMBE Proceedings 29, pp. 311–314, 2010.

23-          M. Abdoli , M.R. Ay, A. Ahmadian  and H. Zaidi “Reduction of dental filling metallic artifacts in CT-based attenuation correction of PET data using weighted virtual sinograms” IEEE Nuclear Science Symposium & Medical Imaging Conference, Orlando (FL) USA, 25-31 October 2009, 2752-2755.

24-          A. Mehranian , M.R. Ay, N. Riahi Alam  and H. Zaidi  “Quantitative assessment of the effect of anode surface roughness on diagnostic x-ray spectra using Monte Carlo simulation” IEEE Nuclear Science Symposium & Medical Imaging Conference, Orlando (FL) USA, 25-31 October 2009, 2902-2907.

25-          R. Prasad, M.R Ay , O. Ratib  and H. Zaidi  “CT-based attenuation correction on the FLEX Triumph™ preclinical PET/CT scanner” IEEE Nuclear Science Symposium & Medical Imaging Conference, Orlando (FL) USA, 25-31 October 2009, 3357-3362.

26-          M.R. Ay, A. Maleki, H. Ghadiri, P. Ghafarian, A. Ahmadian and H. Zaidi, ” The Influence of X-ray Spectra Filtration on Image Quality and Patient Dose in the GE VCT 64-Slice Cardiac CT Scanner”, The 3rd International Conference on Bioinformatics and Biomedical Engineering (IEEE iCBBE 2009), June 11th to 13th, 2009, 1-4, Beijing, China.

27-          P. Ghafarian and S.M.R. Aghamiri, M.R. Ay, A. Rahmim and H. Zaidi, “Quantification of PET and CT Data Misalignment Errors in Cardiac PET/CT: Clinical and Phantom Studies”, The 3rd International Conference on Bioinformatics and Biomedical Engineering (IEEE iCBBE 2009), June 11th to 13th, 2009, 1-4, Beijing, China.

28-          M. Abdoli, M.R. Ay, A. Ahmadian and H. Zaidi, “Metal Artifact Reduction in CT-Based Attenuation Correction of PET Data Using the Virtual Sinogram Concept”, The 3rd International Conference on Bioinformatics and Biomedical Engineering (IEEE iCBBE 2009), June 11th to 13th, 2009, 1-4, Beijing, China.

29-          L. Karimiafshar, N. Riyahi Alam, M.R. Ay, M. Alahverdi, T. Alahvirdi Pourfallah , H. Hashemi, A. Farahani,B. Rafiei and M. Bakhtiar, ” A Novel Application of MRI-Polymer Gel Dosimeter for Measurement of CTDI on X-Ray 64 Slices CT Scanner”, The World Congress on Medical Physics and Biomedical Engineering, Germany, Munich,  7-12 September  2009,   IFMBE Proceedings 25, pp. 541-544

30-          P. Allahverdi, N.  Riahi Alam, M.  Allahverdi, M.R.  Ay, M.  Zahmatkesh M, ” Evaluation of Dose Delivery Accuracy of Gamma Knife Using MRI Polymer Gel Dosimeter in an Inhomogeneous Phantom”, 5th Congress on Radiotherpy Gel Dosimetry, 2008 , Greece, 399-403

31-          P. Allahverdi, N.  Riahi Alam, M.  Allahverdi, M.R.  Ay, M.  Zahmatkesh M, ” EGSnrc calculated and MRI-Polymer Gel Dosimeter Measured Dose Distribution of Gamma Knife in Presence of Inhomogeneities”, International Congress of Medical physics, India, 2008.

32-          P. Geramifar, M.R. Ay, M. Shamsai Zafarghandi, G. Loudos, A. Rahmim” Monte Carlo Based Performance Assessment of Four Commercial GE Discovery PET/CT Scanners Using GATE” IEEE Nuclear Science Symposium & Medical Imaging Conference, Dresden, Germany, 19-25 October 2008, 3995-3999.

33-          A. Rahmim, J. Tang, M. A. Lodge, S. Lashkari, M.R. Ay, R. Lautamaki, B. M. W. Tsui, and F. Bengel” Rb-82 Cardiac PET Imaging with Resolution Modeling” IEEE Nuclear Science Symposium & Medical Imaging Conference, Dresden, Germany, 19-25 October 2008, 3643-3650.

34-          A. Akbarzadeh, M.R. Ay, H. Ghadiri, S. Sarkar and H. Zaidi”A hybrid approach for accurate estimation of the scatter component in x-ray CT combining experimental measurements and Monte Carlo simulations” IEEE Nuclear Science Symposium & Medical Imaging Conference, Dresden, Germany, 19-25 October 2008, 3864-3867.

35-          M. Rasouli, M.R. Ay, A. Takavar, S. Lashkari and G. Loudos ” The Influence of InterCrystal Scattering on Detection Efficiency of Dedicated Breast Gamma Camera: A Monte Carlo Study” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 2451–2454.

36-          N. Dehestani, S. Sarkar, M.R. Ay, M. Sadeghi and M. Shafaei “Comparative Assessment of Rotating Slat and Parallel Hole Collimator Performance in GE DST-Xli Gamma Camera: A Monte Carlo Study” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 1062–1065.

37-          M.R. Ay, J.H. Bidgoli, P. Ghafarian  and H. Zaidi “Reduction of Intravenous Contrast Related Artifacts in CT-based Attenuation Corrected PET Images” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 513–516

38-          M. Shafaei, M.R. Ay, S. Sardari  and H. Zaidi  “Monte Carlo assessment of geometric, scatter and septal penetration components in high energy collimators” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 2479–2482

39-          M. Shirmohammad , M.R. Ay , A. Rahmim , S. Sarkar  and H. Zaidi  “Comparative assessment of different energy mapping approaches in CT based attenuation correction: a patient study” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 496–499

40-          M. Abdoli, M.R Ay , A. Ahmadian, N. Sahba  and H. Zaidi  “A novel approach for reducing dental filling artefacts in CT-based attenuation correction of head and neck oncologic PET/CT data” 4th European Congress of the International Federation of Medical and Biological Engineering, Antwerp, Belgium, 23-27 November 2008 ECIFMBE 2008, IFMBE Proceedings 22, pp. 492–495

41-          A. Akbarzadeh A, M.R. Ay, H. Ghadiri, S. Sarkar  and H. Zaidi “A novel approach for experimental measurement of scatter profile and scatter to primary ratio in a 64-slice CT scanner”, 4th Kuala Lumpur International Conference on Biomedical Engineering, 25-28 June 2008, Kuala Lumpur, Malaysia, IFMBE Proceedings Series, Vol. 21, pp 473-477.

42-          S. Lashkari, S. Sarkar, M.R. Ay and A. Rahmim, “The Influence of Crystal Material on Intercrystal Scattering and the Parallax Effect in PET BlockDetectors: A Monte Carlo Study”, 4th Kuala Lumpur International Conference on Biomedical Engineering, 25-28 June 2008, Kuala Lumpur, Malaysia, IFMBE Proceedings Series, Vol. 21, pp 633-636.

 43-          M. Shirmohammad, M.R. Ay, H. Ghadiri, S. Sarkar and A. Rahmim, “Comparative Assessment of Different Energy Mapping Methods for Generation of 511- keV Attenuation Map from CT Images in PET/CT Systems: A Phantom Study”, 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 14-17 May, Paris, France, 2008, 644-647.

 44-          P. Geramifar, M.R. Ay, M. Shamsayee, G. Lodous and A. Rahmim, “Monte Carlo Assessment of Time-of-Flight Benefits on The LYSO-Based Discovery RX PET/CT Scanner”, 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 14-17 May, Paris, France, 2008, 364-367.

 45-          A. Rahmim, M. Lodge, J. Tang, S. Lashkari and M.R. Ay, “Analytic System Matrix Resolution in PET: An Application to RB-82 Cardiac Imaging”, 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 14-17 May, Paris, France, 2008, 1307-1310.

 46-          M.R. Ay, H. Ghadiri, P. Ghafarian, S. Sarkar and H. Zaidi  “Influence of energy indexing algorithm and electron substeps on MCNP4C electron transport: Application to simulation of x-ray spectra in diagnostic radiology and mammography” Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference, Honolulu, Hawaii, 28 October – 3 November 2007,  Vol. 5, pp 4006-4011.

47-          J.H. Bidgoli, M.R. Ay, S. Sarkar, A. Ahmadian and H. Zaidi “Correction of correction of PET images using an automated segmentation algorithm” Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference, Honolulu, Hawaii, 28 October – 3 November 2007, Vol. 5, pp 3542-3547.

 48-          P. Ghafarian, M.R. Ay, H. Ghadiri,  S. Sarkar and H. Zaidi “Impact of x-ray tube voltage, field size and phantom thickness on scattered radiation in diagnostic radiology: A Monte Carlo investigation” Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference, Honolulu, Hawaii, 28 October – 3 November 2007, Vol. 5, pp 3830-3834.

49-          M.R. Ay, P. Ghafarian and H. Zaidi “A hybrid approach for fast simulation of x-ray computed tomography” Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference, Honolulu, Hawaii, 28 October – 3 November 2007, Vol. 4, pp 3155-3160.

50-          M.R. Ay and H. Zaidi. “Simulation-based assessment of the impact of contrast medium on CT-based attenuation correction in PET”, Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference. San Diego, USA, 29 October – 4 November 2006, Vol. 5; pp. 2731-2735.

           Recipient of 2006 IEEE Medical Imaging Conference Award 

51-          H. Zaidi and M.R. Ay “Impact of x-ray scatter when using CT-based attenuation correction in PET: A Monte Carlo investigation” Proceedings of IEEE Nuclear Science Symposium & Medical Imaging Conference, San Diego, USA, 29 October – 4 November 2006, Vol. 4; pp. 2161-2165.

52-          H. Ghadiri and M.R. Ay. “A Novel Hybrid Approach for Measurement of Bone Mineral Density and Content with High Signal to Noise Ratio”, Proceedings of World Congress on Medical physics and Biomedical Engineerin, Seoul, Korea, August 27 – September 1, 2006, pp. 1324-1327.

53-          M.R. Ay, S. Sarkar, M. Shahriari, D. Sardari, and H. Zaidi. “MCNP4C-based Monte Carlo simulator for fan- and cone-beam x-ray CT: development and experimental validation”. Proceedings of 14th International Conference of Medical Physics. Biomedizinische Technik. 2005. Nuremberg, Germany, Sept. 14-17, 2005. 50 Suppl Part 1: pp. 360-361.

 

 

Published Abstract:

1- Emami, H. Ghadiri, P. Ghafarian, P. Geramifar, M.R. Ay “Breast-dedicated PET scanner based on partial geometry” European Association of Nuclear Medicine Annual Congress, 15-19 october 2016, Barcelona, spain, Eur J Nucl Med Mol, Vol 43, S93

2-  P. Sheikhzadeh, H. Sabet, H. Ghadiri, P. Ghafarian, M.R. Ay “Design and Performance evaluation of a Novel Brain PET Geometry Based on Partial Cylindrical Detector using Monte Carlo simulation” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, spain, Eur J Nucl Med Mol, Vol 43, S 94

3- Mahani, G. Raisali, A. Kamali-Asl, M.R. Ay “Keel- versus Knife-Edge Slit-Hole Collimation in Small-Animal SPECT: a GATE Monte Carlo Study” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S111

4- I. Shiri, A. Rahmim, H. Abdollahi1, P. Ghafarian, A. Bitarafan, M.R. Ay, M. BakhshaieshKaram ” Radiomics texture features variability and Reproducibility in advance image reconstruction setting of oncological PET/CT ” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S150

5-  N. Zeraatakr, A. Rahmim, S. Sarkar, M.R. Ay “ A New Method for Submillimeter Desktop Small-Animal SPECT Imaging using Tilted Detector” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S 219

6-  S. Khorasani Gerdekoohi , N. Vosoughi, K. Tanha, M. Assadi, M.R. Ay “A Study on the Effect of Attenuation Correction in image Quantity in Small-Animal SPECT System” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S220

7-  S. Shojaeilangari, M.R. Ay “Compensation of Missing Data in Sinograms of a PET Scanner with Partial Geometry for Robust Image Reconstruction” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S394

8-  S. Khorasani Gerdekoohi1, N. Vosoughi, K. Tanha, M. Assadi, M.R. Ay “Evaluation of Quantitative Accuracy of Tc-99m Small-Animal SPECT Imaging in Phantom Studies”  European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S475

9-  Z. Mojabi, P. Ghafarian, H. Ghadiri, M. Bakhshayeshkaram, H.Jamaati, M.R. Ay “Optimization and evaluation of low dose CT protocol for attenuation correction of PET data” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S486

10-  Mahani, G. Raisali, A. Kamali-Asl, M.R. Ay “Collimator-Detector Response Compensation in Preclinical SPECT using STIR Framework” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S500

11-  Shiri, P. Ghafarian, A. Bitarafan, M. BakhshaieshKaram, M.R. Ay “Impact of advanced image reconstruction algorithm on qualitative and quantitative oncological 18F-FDG PET/CT” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S509

12-  B. Teimourian Fard, M.R. Ay, S. Sajedi, A. Akbarzadeh, S.Kaviani, M. Farahani “Implementation of Correlated Signal Enhancement (CSE) Technique for Accurate Positioning in Gamma Camera” European Association of Nuclear Medicine Annual Congress, 15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol,Vol 43, S510

13-   Radnia, M. Farahani, M. Ay “Designing 14C-Urea Breath Test System for Detecting Helicobacter Pylori” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S510

14-  S. Sajedi Toighoun, M. Taheri, N. Zeraatkar, S. Kaviani, M.R. Ay “Channel Reduction in SiPM Array Using Fast Output for a PET Block Detector” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S511

15-  Nikoogoftar, N. Zeraatkar, M. Shamsaie, M.R. Ay “Monte Carlo Modeling of a Gamma Probe for Sentinel Lymph Node Biopsy” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S512

16-  P. Sheikhzadeh, H. Sabet, H. Ghadiri, P. Geramifar, H. Mahani,P. Ghafarian, M.R. Ay “Performance characteristics of NeuroPET system using GATE Monte Carlo simulation” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S512

17- y. Salimi, P. Ghafarian, M. Deevband, M. Bakhshayesh Karam, H.Jamaati, M.R. Ay “The impact of using tube-current-modulation technique for attenuation correction of PET/CT images on image quality and patient dose” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S525

18-   N. Salehi, M. Farahani, E. Fatemizadeh, S. Farzanefar4, M.R. Ay “Introducing a pre-reconstruction cardiac motion compensation technique in gated myocardial perfusion SPECT” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S546

19-   Emami, H. Ghadiri, P. Ghafarian, P. Geramifar, M.R. Ay “Breast-dedicated PET scanner based on partial geometry” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S93

20-   P. Sheikhzadeh, H. Sabet, H. Ghadiri, P. Ghafarian, M.R. Ay “Design and Performance evaluation of a Novel Brain PET Geometry Based on Partial Cylindrical Detector using Monte Carlo simulation” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S94

21-   Mahani, G. Raisali, A. Kamali-Asl, M.R. Ay “Keel- versus Knife-Edge Slit-Hole Collimation in Small-Animal SPECT: a GATE Monte Carlo Study” European Association of Nuclear Medicine Annual Congress,15-19 October 2016, Barcelona, Spain, Eur J Nucl Med Mol, Vol 43, S11

22-    R. Sharif Pour, P. Ghafarian, A. Doroudinia, M. Bakhshayesh Karam and M. R. Ay, “Reduction of Respiratory Induced Artefact in PET/CT Images using TOF Reconstruction“ ACNM 2016

23-   S. Gholami S , H. Nedaie, F. Longo, M. R. Ay, AS. Meigooni “ An optimal Grid block design for spatially fractionated radiation therapy“  ESTRO 2015.

24-    S. Gholami, AS. Meigooni, H. Nedaie, F. Longo M. R. Ay, “Impact of the Radiation Sensitivity         of Tumor and Geometric Design of the GRID Block On the Clinical Response of Grid Therapy. Med Phys. 2015;42:3440.

25-  S. Nezhaddehghani1, S. Sarkar, and M. R. Ay, “Design, modeling and performance evaluation of a small animal Micro-CT scanner: A     Monte Carlo study” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 97.

26-    S. Hosseini, M. H. Farahani and M. R. Ay, “An alternate mathematical modeling of image formation, and framework for performance analysis of positioning algorithms in the scintillation camera” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 103.

27-  H. Mahani, G. Raisali, A. Kamali-Asl and M. R. Ay, “Spinning Knife-Edge Slit-Hole: a Novel Collimation for High-Sensitivity Molecular SPECT” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 200.

28-    M. R. Ay , H. Mahani, G. Raisali, and A. Kamali-Asl,  “Optimal Pixelated Crystal for a Molecular SPECT Scanner: A GATE Monte Carlo Study” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 200.

29-    M. R. Ay , S. Nezhaddehghani1, and S. Sarkar,  “Monte Carlo Simulation of X-ray Spectra in Computed Tomography Scanner using GATE” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 331.

30-    P. Ghafarian, S. Zargan, A. Shabestani Monfared, A. Sharafi, M. Bakhshayeshkaram and M. R. Ay, “TLD Measurement of Absorbed Dose of Workers in PET/CT Department” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p109.

31-   P. Ghafarian, S. M. Khamesi1, M. R. Golrokh Nodehi and M. R.  Ay, “Acceptance Test of the first Hospital Cyclotron for Production of PET tracers in Iran” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 518.

32- M. Shekari, P. Ghafarian, M. Bakhshayeshkaram and M. R.  Ay, “The Impact of time of flight algorithm and PSF modeling on standard uptake value in clinical PET/CT imaging” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 132.

33-   S. Ahangari1, P. Ghafarian, M. Bakhshayeshkaram and M. R.  Ay, “Impact of Point spread function modeling on tumor quantification in clinical PET/CT imaging” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 133.

34-   H. Saligheh Rad, M. Shirin Shandiz, P. Ghafarian, M. H.  Arabi, M. Bakhshayeshkaram, N. Shafiei and M. R.  Ay, “Generating a four-class attenuation map for MR-based attenuation correction of PET data in pelvis region using an automatic segmentation protocol” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 201.

35-   Z. Etemadi, A. Bitaran Rajabi, H. Malek, P. Ghafarian, N. Zeraatkar and M. R. Ay, “Can Pacemaker and ICD degrade CT-Based Attenuation Corrected cardiac SPECT images?” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto,  Canada, p 132.

36-   P. Khateri, H. Saligheh Rad, A. Homayoun Jafari, A. Fathi, A. Akbarzadeh, M. Shojae Moghadam, A. Aryan, P. Ghafarian and M. R. Ay, “Generation of 4-Class Attenuation Map for MRI Based Attenuation Correction of PET Data in the Head Area Using a Novel Combination of STE/DIXON-MRI and FCM Clustering” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 371.

37-   M. R.  Ay, Z. Etemadi, A.  Bitarafan-Rajabi, H. Malek, N. Zeraatkar and P. Ghafarian, “Correction of Metal Artefacts Induced from Pacemaker and ICD Leads in CT-Based Attenuation Correction of Cardiac SPECT data” World Congress on Medical Physics & Biomedical Engineering, 7-12 June 2015,  Toronto, Canada, p 522.

38-   V. Moji, N. Zaratkar, S. Sajedi, A. Akbarzadeh, B. Timourian, M.H. Farahani and M. R. Ay “Design and development of small fieldof view portable gamma camera for localization of sentinel lymph nodes” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 70.

39-  S. Nerzhaddehghani, S. Sarkar and M. R. Ay ” Development of a hybrid small animal SPECT/CT scanner:a Monte Carlo study” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 71.

40-  H. Mahani, G. Raisali, A. Kamali asl and M. R. Ay ” Monte Carlo-based characterization of HiReSPECT scanner: a dedicatd small animal SPECT imaging system” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 73.

41-   S. Ahanghari, P. Ghafarian, M. Sherkari, M. Bakhshayesh karam and M. R. Ay ” Optimizing the acquisition time in whole body PET/CT imaging” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 75.

42-   N. Gorjizadeh, S. Farzanehfar, A. Kaviani, N. Zeraatkar, M. H. Farhani, S. Sajesi and M. R. Ay ” Performance evaluation of surgical gamma probe for sentinel lymph node localization based on NMA NU3-2004 standard” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 77.

43-   H. Mahani, G. Raisali, A. Kamali asl and M. R. Ay ” Quantification of inter-crystal scatter and penetration in HiReSPCT: a dedicated small animal SPCT imaging systm” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 78.

44-    S. Zargan, A. Monfared, P. Ghafarian, A. K. Sharafi, M. Bakhshayesh karam and M. R. Ay ” Experimental measurement of absorbed dose using TLD for radiation workers in PET/CT department” 18th Iranian Conference of Nuclear Medicine, Tehran, Iran, 12-14 November 2104, pp. 157.

45-   M. Shirin Shandiz, M. H. Arabi, P. Ghafarian, M. Bakhshayesh Karam , H. Saligheh Rad and M. R. Ay ” A hybrid method for generation of attenuation map for MR-based attenuation correction of PET data in prostate PET/MR imaging ” PSMR 2014 MR-PET Workshop, Kos Island, Greece, 19-21 May 2014, EJNMMI Physics 2014, 1(Suppl 1):A77.

46-  M. H. Arabi, A. Fathi, P. Khateri, M. R. Ay and  H. Saligheh Rad ” MR-Based Attenuation Map Generation in Short-TE MR Images of the Head Employing Spatial Fuzzy C-Means Clustering Approach ” PSMR 2014 MR-PET Workshop, Kos Island, Greece, 19-21 May 2014, EJNMMI Physics 2014, 1(Suppl 1):A49

47-    Fathi, M. H. Arbabi, M. R. Ay and  H. Saligheh Rad ” A Fully Automated and Reproducible Level-set Segmentation Approach for Generation of MR-Based Attenuation Correction Map of PET Images in the Brain Employing Single STE-MR Imaging Modality” PSMR 2014 MR-PET Workshop, Kos Island, Greece, 19-21 May 2014, EJNMMI Physics 2014, 1(Suppl 1):A48

48-  M. R. Ay, N. Zeraatkar, N. Gorjizadeh,  S. Sajedi, H. Arabi, M. H. Farahani, B. Teimourian    “SURGEOGUIDE: a Gamma Probe for Localization of Sentinel Lymph Nodes” European Association of Nuclear Medicine Annual Congress, 19-23 October 2013, Lyon, France. Eur J Nucl Med Mol, Vol 20, Issue 2.

49-  P. Ghafarian and M. R. Ay “The Influence of Misalignment Artifact Due to Global and Respiratory Motion on Interpretation of Cardiac PET/CT Examination: Clinical and Phantom Studies” European Association of Nuclear Medicine Annual Congress, 19-23 October 2013, Lyon, France. Eur J Nucl Med Mol, , Vol 20, Issue 2.

50-  P. Geramifar, M. Shamsaie Zafarghandi and M.R. Ay “Optical Flow Based Method for Generation of Virtual Average CT: A Simulation Study Using 4D XCAT Phantom” European Association of Nuclear Medicine Annual Congress, 19-23 October 2013, Lyon, France. Eur J Nucl Med Mol, Vol 20, Issue 2.

51-  N. Gorjizadeh, N. Zeraatkar, A. Kaviani, S. Farzaneh far, M. H. Farahani, A. Akbarzadeh, S. Sajedi, B. Teimourian and M. R. Ay ” Performance Evaluation of a Small Field of View Portable Gamma Camera for Localization of Sentinel Lymph Nodes ” European Association of Nuclear Medicine Annual Congress, 19-23 October 2013, Lyon, France. Eur J Nucl Med Mol, Vol 20, Issue 2.

52-  P. Geramifar, M. Shamsaie Zafarghandi and M.R. Ay ” Variation in Thoracic Lesions SUVmax as a Function of Respiratory Phase Based on the Optical Flow Motion Estimation: A Simulation Study Using 4D XCAT Phantom” European Association of Nuclear Medicine Annual Congress, 19-23 October 2013, Lyon, France. Eur J Nucl Med Mol, Vol 20, Issue 2.

53- M.R. Ay, Akbarzadeh A, Ahmadian and Zaidi H “Classification of bones from MR images in torso PET-MR imaging using a statistical shape model” PSMR 2013 MR-PET Workshop, Jülich, Germany, 6-7 Mai –2013.

54-  P. Khateri, H. Salighe Rad, A.H. Jafari and M.R. Ay ” A Novel Segmentation Approach for Implementation of MRAC in Head and Neck PET/MRI Imaging Employing Short-TE MRI and 2-Point Dixon Method in Fuzzy C-Means Framework ” PSMR 2013 MR-PET Workshop, Jülich, Germany, 6-7 Mai –2013.

55-    H. Ghadiri, M.B. Shiran, H.R. Soltanian-Zadeh and M.R. Ay ” A new energy mapping algorithm based on spectral CT images: application in PET/CT attenuation correction” Iranian Congress of Nuclear Medicine, Shiraz, Iran, May 1-3, 2013.

56-   H. Mahani, A. R. Kamali-Asl, V. Moslemi, M.R. Ay” Spatial Resolution and System Sensitivity in a Tilted-Head Planar-SPECT: a Monte Carlo Study” Iranian Congress of Nuclear Medicine, Shiraz, Iran, May 1-3, 2013.

57-   V.Moji, M. Aghamiri, H. Farahani, N. Zeratkar, S. Sajedi, B. Teymorian and M.R. Ay ” Performance evaluation of HiReSPECT a dedicated animal SPECT system using modified NEMA standards ” Iranian Congress of Nuclear Medicine, Shiraz, Iran, May 1-3, 2013.

58-    M. R. Ay , H. Arabi, M. H. Farahani, N. Zeraatkar, S. Sarkar, S. Sajed, N. Naderi  and P. Ghafaian, ” SURGEOSIGHTTM: An Intraoprative Hand Held Gamma Camera for Precise Localization of Sentine Lymph Nodes” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S385.

59-  M. R. Ay , H. Arabi, M. H. Farahani, N. Zeraatkar, S. Sarkar, S. Sajed, N. Naderi  and P. Ghafaian, ” Design and Development of a High Resolution Small Animal Imaging System for Mice and Rat ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S441.

60- P. Geramifar, M. Shamsaie Zafarghandi, M.R. Ay, ” Standardized Uptake Value-Based Evaluations of Respiratory-Induced Errors in CTAC PET Images: A Simulation Study Using 4D XCAT Phantom ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S403.

61-   N. Zeraatkar, M.H. Farahani, H. Arabi, S. Sarkar, S. Sajedi, N. Naderi, P. Ghafarian, A. Rahmim and M.R. Ay, “An Innovative Rotation-Based Iterative Resolution Recovery for HiReSPECT™: a Dedicated Small Animal SPECT System” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S386-S387.

62- P. Khareti, H. Salighe Rad, and M.R. Ay ” Determination of Attenuation Map at 511 keV  Employing 3D Short Echo-Time MR Imaging in the Head Area: Application in MR-Based AC of PET data ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S369.

63-  L. Saleki, A. Bitarafan-Rajabi, N. Yaghobi, B. Falahi, and M.R. Ay ” Quantification of the influence of misregistration between CT and SPECT images on the accuracy of CT-based attenuation correction of cardiac images in hybrid SPECT/CT systems” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S518.

64-  S. Sajedi, M. R. Ay, M. H. Farahani, N. Zeraatkar, H. Arabi, and N. Naderi ” Digital signal processing unit for nuclear detection system ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S498.

65-   N. Ghazanfari, M.R. Ay, S.Sarkar and G.Loudos ” The influence of crystal material and size on the performance of partial-rotating dual head small animal PET scanners: Quantitative evaluation using Monte Carlo modeling ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S442.

66-   M. Sedighpoor, P. Ghafarian, A. Emami, M. R. Ay; ” Evaluation of the influence of respiratory motion misalignment between PET and CT data on diagnosis of heart defects using 4D XCAT phantom and STIR reconstruction ” European Association of Nuclear Medicine Annual Congress, 27-31 October 2012, Milan, Itly. Eur J Nucl Med Mol, S515.