Ay, Mohammad Reza

 
 
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2015

Scientific Articles

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Monte Carlo-based assessment of the trade-off between spatial resolution, field-of-view and scattered radiation in the variable resolution X-ray CT scannerArabi, Hossein; Kamali Asl, Ali Reza; Ay, Mohammad Reza; Zaidi, Habib;

2014

Scientific Articles

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Derivation of attenuation map for attenuation correction of PET data in the presence of nanoparticulate contrast agents using spectral CT imagingGhadiri, Hossein; Shiran, Mohammad Bagher; Soltanian-Zadeh, Hamid; Rahmim, Arman; ... Ay, Mohammad Reza
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Quantification of PET and CT misalignment errors due to bulk motion in cardiac PET/CT imaging: Phantom and clinical and studiesGhafarian, Pardis; Ay, Mohammad Reza; Fard-Esfahani, A; Rahmim, Arman; Zaidi, Habib

2013

Scientific Articles

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3D Prior Image Constrained Projection Completion for X-ray CT Metal Artifact ReductionMehranian, Abolfazl; Ay, Mohammad Reza; Rahmim, Arman; Zaidi, Habib;
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An ordered-subsets proximal preconditioned gradient algorithm for edge-preserving PET image reconstructionMehranian, Abolfazl; Rahmim, Arman; Ay, Mohammad Reza; Kotasidis, Fotis; Zaidi, Habib
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Evaluation of whole-body MR to CT deformable image registrationAkbarzadeh, A; Gutierrez Rios, Daniel Fernando; Baskin, A; Ay, Mohammad Reza; ... Zaidi, Habib
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Experimental assessment of the influence of beam hardening filters on image quality and patient dose in volumetric 64-slice X-ray CT scannersAy, Mohammad Reza; Mehranian, Abolfazl; Maleki, Asghar; Ghadiri, Hossien; ... Zaidi, Habib
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K-edge ratio method for identification of multiple nanoparticulate contrast agents by spectral CT imagingGhadiri, H; Ay, Mohammad Reza; Shiran, M B; Soltanian-Zadeh, H; Zaidi, Habib
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MRI-guided attenuation correction in whole-body PET/MR: assessment of the effect of bone attenuationAkbarzadeh, A; Ay, Mohammad Reza; Ahmadian, A; Alam, N Riahi; Zaidi, Habib
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Smoothly clipped absolute deviation (SCAD) regularization for compressed sensing MRI using an augmented Lagrangian schemeMehranian, Abolfazl; Rad, Hamidreza Saligheh; Rahmim, Arman; Ay, Mohammad Reza; Zaidi, Habib
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X-ray CT metal artifact reduction using wavelet domain L0 sparse regularizationMehranian, Abolfazl; Ay, Mohammad Reza; Rahmim, Arman; Zaidi, Habib;

2012

Scientific Articles

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A novel energy mapping approach for CT-based attenuation correction in PET.Teimourian, B; Ay, Mohammad Reza; Zafarghandi, M Shamsaie; Ghafarian, P; ... Zaidi, Habib
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Impact of miscentering on patient dose and image noise in x-ray CT imaging: phantom and clinical studiesHabibzadeh, M A; Ay, Mohammad Reza; Asl, A R Kamali; Ghadiri, H; Zaidi, Habib

2011

Scientific Articles

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Accurate Monte Carlo modeling and performance assessment of the X-PET subsystem of the FLEX triumph preclinical PET/CT scannerZeraatkar, N; Ay, Mohammad Reza; Kamali-Asl, A R; Zaidi, Habib;
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Comparative assessment of energy-mapping approaches in CT-based attenuation correction for PET.Ay, Mohammad Reza; Shirmohammad, Maryam; Sarkar, Saeed; Rahmim, Arman; Zaidi, Habib
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CT-Based Attenuation Correction on the FLEX Triumph Preclinical PET/CT ScannerPrasad, Rameshwar; Ay, Mohammad Reza; Ratib, Osman; Zaidi, Habib;
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Is metal artefact reduction mandatory in cardiac PET/CT imaging in the presence of pacemaker and implantable cardioverter defibrillator leads?Ghafarian, Pardis; Aghamiri, S M R; Ay, Mohammad Reza; Rahmim, Arman; ... Zaidi, Habib
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Novel detector design for reducing intercell x-ray cross-talk in the variable resolution x-ray CT scanner: a Monte Carlo studyArabi, Hosein; Asl, Ali Reza Kamali; Ay, Mohammad Reza; Zaidi, Habib;
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Qualitative and quantitative assessment of metal artifacts arising from implantable cardiac pacing devices in oncological PET/CT studies: a phantom studyAy, Mohammad Reza; Mehranian, Abolfazl; Abdoli, Mehrsima; Ghafarian, Pardis; Zaidi, Habib

2010

Scientific Articles

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A new method for experimental characterisation of scattered radiation in 64-slice CT scannerAkbarzadeh, A.; Ay, Mohammad Reza; Ghadiri, H.; Sarkar, S.; Zaidi, Habib
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A virtual sinogram method to reduce dental metallic implant artefacts in computed tomography-based attenuation correction for PETAbdoli, Mehrsima; Ay, Mohammad Reza; Ahmadian, Alireza; Zaidi, Habib;
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Coronary calcium score scan-based attenuation correction in cardiovascular PET imagingGhafarian, Pardis; Aghamiri, Seyed Mahmoud Reza; Ay, Mohammad Reza; Fallahi, Babak; ... Zaidi, Habib
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Measurement of scattered radiation in a volumetric 64-slice CT scanner using three experimental techniquesAkbarzadeh, A.; Ay, Mohammad Reza; Ghadiri, H.; Sarkar, S.; Zaidi, Habib
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Quantifying the effect of anode surface roughness on diagnostic x-ray spectra using Monte Carlo simulationMehranian, A.; Ay, Mohammad Reza; Alam, N Riyahi; Zaidi, Habib;
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Reduction of dental filling metallic artifacts in CT-based attenuation correction of PET data using weighted virtual sinograms optimized by a genetic algorithmAbdoli, Mehrsima; Ay, Mohammad Reza; Ahmadian, Alireza; Dierckx, Rudi A J. O.; Zaidi, Habib

2008

Scientific Articles

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Correction of oral contrast artifacts in CT-based attenuation correction of PET images using an automated segmentation algorithmAhmadian, Alireza; Ay, Mohammad Reza; Bidgoli, Javad H.; Sarkar, Saeed; Zaidi, Habib
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