Journal

2019

• M. Li, and S. Abbaszadeh, “Influence of channel configuration on bandwidth of cadmium zinc telluride detector with a cross-strip pattern”, Radiation Physics and Chemistry, 155(2019):213-216.
• Z. Liu, and S. Abbaszadeh, “Double Q-Learning for Radiation Source Detection”, Sensors, 19(2019):960.

2018

• D. Vernekohl, S. Abbaszadeh, Y. Gu, and C. S. Levin, “Robust Detector Calibration for a Novel PET System Based on Cross-Strip CZT Detectors”, IEEE Transactions on Radiation and Plasma Medical Sciences (2018).
• Z. Liu, S. Abbaszadeh, and C.J. Sullivan, “Spatial-temporal modeling of background radiation using mobile sensor networks”, PloS one 13, no. 10 (2018): e0205092. 

2017

• S. Abbaszadeh and C. S. Levin, “A new generation small animal positron emission tomography system for molecular imaging”, Journal of Medical Imaging, vol. 4, pp. 011008, 2017.

2016

• S. Abbaszadeh, Y. Gu, P. Reynolds, and C. S. Levin, “Characterization of a sub-assembly of 3D position sensitive cadmium zinc telluride detectors and electronics from a sub-millimeter resolution PET system,” Physics in Medicine and Biology, vol. 61, pp. 6733, 2016.
• S. Abbaszadeh, S. Ghaffari, S. Siddiquee, M. Z. Kabir, and K. S. Karim, “Characterizations of lag signal in amorphous selenium detectors,” IEEE Trans. Electron Devices, IEEE Trans. Electron Devices, vol. 63, pp. 704, 2016.

2015

• S. Ghaffari, S. Abbaszadeh, S. Ghanbarzadeh, and K. S. Karim. “Characterization of optically sensitive amorphous selenium photodetector at high electric fields,” IEEE Trans. Electron Devices, vol. 62, pp. 2364, 2015.
• K. Wang, S. Abbaszadeh, K. S. Karim, J. Rowlands, and A. Reznik, “Reactive ion assisted deposition of cerium oxide hole-blocking contact for leakage current suppression in amorphous selenium multilayer structure,” IEEE Sensors, vol. 15, pp. 3871, 2015.

2014

• G. P. Lindberg, T. O’Loughlin, N. Gross, A. Mishchenki, A. Reznik, S. Abbaszadeh, K. S. Karim, G. Belev, and B. A. Weinstein, “Photo-crystallization in a-Se layer structures: effects of film-substrate interface-rigidity,” Journal of Applied Physics, vol. 116, pp. 193511, 2014.
• S. Abbaszadeh, A. Tari, W. Wong, and K. S. Karim, “Enhanced dark current suppression of amorphous selenium detector with use of IGZO hole blocking layer,” IEEE Trans. Electron Devices, vol. 61, pp. 3355, 2014.
• S. Ghanbarzadeh, S. Abbaszadeh, and K. S. Karim, “Low dark current amorphous silicon metal-semiconductor-metal photodetector for digital imaging applications,” IEEE Electron Device Letters, vol. 35, pp. 235, 2014.
• G. P. Lindberg, T. O’Loughlin, N. Gross, A. Reznik, S. Abbaszadeh, K. S. Karim, G. Belev, D. M. Hunter, and B. A. Weinstein, “Raman and AFM mapping studies of photo-induced crystallization in a-Se films: Substrate-strain and thermal effects,” Canadian Journal of Physics, vol. 92, pp. 728, 2014.

2013

• S. Abbaszadeh, C. C. Scott, O. Bubon, A. Reznik, and K. S. Karim, “Enhanced detection efficiency of direct conversion X-ray detector using polyimide as hole-blocking layer,” Scientific Reports, vol. 3, pp. 3360, 2013.
• S. Abbaszadeh, N. Allec, and K. S. Karim, “Characterization of low dark-current lateral amorphous-selenium metal-semiconductor-metal photodetectors,” IEEE Sensors, vol. 13, pp. 1452, 2013.
• S. Abbaszadeh, K. S. Karim, and V. Karanassios, “Measurement of UV from microplasma by a microfabricated amorphous selenium detector,” IEEE Trans. Electron Devices, vol. 60, pp. 880, 2013.
• N. Allec, S. Abbaszadeh, C. C. Scott, J. M. Lewin, and K. S. Karim, “Evaluating noise reduction techniques while considering anatomical noise in dual-energy contrast-enhanced mammography,” Medical Physics, vol. 40, pp. 051904, 2013.

2012

• N. Allec, S. Abbaszadeh, C. C. Scott, J. M. Lewin, and K. S. Karim, “Including the effect of motion artifacts in noise and performance analysis of dual-energy contrast-enhanced mammography,” Physics in Medicine and Biology, vol. 57, pp. 8405, 2012.
• S. Abbaszadeh, N. Allec, S. Ghanbarzadeh, U. Shafique, and K. S. Karim, “Investigation of hole-blocking contacts for high conversion gain amorphous selenium detectors for X-ray imaging,” IEEE Trans. Electron Devices, vol. 59, pp. 2403, 2012.
• N. Allec, S. Abbaszadeh, A. Fleck, O. Tousignant, and K. S. Karim, “K-edge imaging using dual-layer and single-layer large area flat panel imagers,” IEEE Trans. Nuclear Science, vol. 59, pp. 1856, 2012.
• S. Abbaszadeh, K. Rom, O. Bubon, B. A. Weinstein, K. S. Karim, J. A. Rowlands, and A. Reznik, “The effect of the substrate on transient photodarkening in stabilized amorphous selenium,” Journal of Non-Crystalline Solids, vol. 358, pp. 2389, 2012.

2011

• S. Abbaszadeh, N. Allec, K. Wang, and K. S. Karim, “Low dark-current lateral amorphous-selenium metal-semiconductor-metal photodetector,” IEEE Electron Device Letters, vol. 9, pp. 1263, 2011.
• N. Allec, S. Abbaszadeh, and K. S. Karim, “Single-layer and dual-layer contrast-enhanced mammography using amorphous selenium flat panel detectors,” Physics in Medicine and Biology, vol. 56, pp. 5903, 2011.

2009

• F. Hossein-Babaei, S. Abbaszadeh, and M. Samiee, “Gas sensitive porous silver-rutile high-temperature Schottky diode on thermally oxidized titanium,” IEEE Sensors, vol. 9, pp. 237, 2009.

Conference

2018

• H. Chen, H. Li, M.D. Reed, A.G. Sundaram, J. Eger, J.W. Hugg, and S. Abbaszadeh,  “Development of large-volume high-performance monolithic CZT radiation detector.” In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX, vol. 10762, p. 107620N. International Society for Optics and Photonics, 2018.

2017

• S. Abbaszadeh and C. S. Levin, “Towards a high sensitivity small animal PET system based on CZT detectors,” SPIE Medical Imaging, to appear.
• S. Abbaszadeh and H. Wu, “Automated location detection of injection site for preclinical stereotactic neurosurgery procedure,” SPIE Medical Imaging, to appear.

2016

• S. Abbaszadeh and C. S. Levin, “3-D position sensitive CZT positron emission tomography system: current status,” Proc. Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), 2016.
• S. Abbaszadeh and C. S. Levin, “Design and optimization of a new-generation CZT-based positron emission tomography system”, Proc. SPIE Optical Engineering, 2016.

2015

• S. Abbaszadeh, G. Chinn, and C. S. Levin, “Effect of energy threshold in sub-mm resolution CZT-based PET system,” Proc. Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), 2015.
• D. Vernekohl, S. Abbaszadeh, Y. Gu, and C. S. Levin, “Enhanced data analysis for improved energy resolution of a CZT-based PET system,” Proc. Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), 2015.

2014

• S. Abbaszadeh, Y. Gu, U. Sikora, and C. S. Levin, “First acquisition of data from prototype 3-D position sensitive CZT PET system,” Proc. Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), 2014.
• C. C. Scott, S. Abbaszadeh, S. Ghanbarzadeh, G. Allan, M. Farrier, and K. S. Karim, “Amorphous selenium direct detection CMOS digital X-ray imager with 25 micron resolution,” Proc. SPIE Medical Imaging, 2014.

2013

• S. Abbaszadeh, S. Ghaffari, and K. S. Karim, “Investigation of electrical conduction in polyimide/amorphous selenium films under high electric fields,” 25th International Conference on Amorphous and Nanocrystalline Semiconductors, 2013.
• S. Abbaszadeh, K. Wang, A. Reznik, J. A. Rowlands, and K. S. Karim, “Ion beam assisted deposition of a mixed cerium oxide hole blocking contact for multilayer amorphous selenium devices,” Canadian Semiconductor Science and Technology Conference, 2013.
• (invited) S. Abbaszadeh, R. Keshavarzi, K. Wang, and K. S. Karim, “Indirect conversion digital X-ray imager using an amorphous selenium photoconductor,” 223rd Electrochemical Society Meeting, 2013.
• S. Abbaszadeh, K. S. Karim, and V. Karanassios, “A low dark current a-Se detector for measurement microplasma emission in the UV for possible use on-site,” Proc. SPIE Defense, Security, and Sensing, 2013.
• S. Abbaszadeh, Z. Du, N. Allec, and K. S. Karim, “Application of organic semiconductors in amorphous selenium based photodetectors for high performance X-ray imaging,” Proc. SPIE Medical Imaging, 2013.
• S. Ghanbarzadeh, S. Abbaszadeh, M. M. Adachi, and K. S. Karim, “Low dark current and high dynamic range a-Si:H MSM photodetector for large area medical imaging,” Proc. SPIE Medical Imaging, 2013.

2012

• G. P. Lindberg, R. E. Tallman, S. Abbaszadeh, and K. S. Karim, J. A. Rowlands, A. Reznik, and B. A. Weinstein, “Frustration of photocrystallization in amorphous selenium films and film-polymer structures near the glass transition,” Proc. AIP Conf., ICPS-31, 2012.
• S. Abbaszadeh, N. Allec, and K. S. Karim, “Study of the transient response of PI/a-Se photodetectors for indirect conversion medical imaging,” Proc. IEEE Nuclear Science Symposium, Medical Imaging Conference (NSS-MIC), 2012.
• S. Abbaszadeh, M. M. Adachi, N. Allec, and K. S. Karim, “Design and fabrication of silicon nanowire based X-ray detector,” Nano Ontario Conference, 2012.
• S. Abbaszadeh, N. Allec, U. Shafique, and K. S. Karim, “Improving amorphous selenium photodetector performance using an organic semiconductor,” Proc. International Conference on Materials and Applications for Sensors and Transducers, 2012.
• Y. Fang, E. O’Bryan, S. Abbaszadeh, H. S. Majid, R. J. Jennings, C. Marini-Bettolo, N. Allec, K. S. Karim, and A. Badano, “Pulse-height spectroscopy of amorphous selenium semiconductor detectors for X-ray imaging applications,” Proc. IEEE Symp. on Radiation Measurements and Applications, 2012.
• G. P. Lindberg, R. E. Tallman, B. A. Weinstein, S. Abbaszadeh, K. S. Karim, and A. Reznik, “Substrate- and interface-mediated photocrystallization in a-Se films and multi-layers,” Bulletin of the American Physical Society, 2012.
• S. Abbaszadeh, N. Allec, and K. S. Karim, “High performance amorphous selenium lateral photodetector,” Proc. SPIE Medical Imaging, 2012.
• S. Abbaszadeh, S. H. Majid, N. Allec, and K. S. Karim, “Amorphous selenium photodetector on a flexible substrate for indirect conversion medical imaging,” Proc. SPIE Medical Imaging, 2012.
• N. Allec, S. Abbaszadeh, J. M. Lewin, and K. S. Karim, “Motion artifacts in dual-energy contrast-enhanced mammography,” Proc. SPIE Medical Imaging, 2012.
• R. Keshavarzi, K. Wang, M. Y. Yazdandoost, K.-W. Shin, F. Chen, S. H. Majid, S. Abbaszadeh, and K. S. Karim, “Performance of a prototype 32×32 pixel indirect X-ray imager based on a lateral selenium passive pixel sensor,” Proc. SPIE Medical Imaging, 2012.

2011

• S. Abbaszadeh, K. Rom, O. Bubon, B. A. Weinstein, K. S. Karim, J. A. Rowlands, and A. Reznik, “Comparison of photodarkening and photocrystallization in rigid and flexible amorphous selenium films,” 24th International Conference on Amorphous and Nanocrystalline Semiconductors, 2011.
• S. Abbaszadeh, N. Allec, K. Wang, F. Chen, and K. S. Karim, “Study of gain phenomenon in lateral metal-semiconductor-metal detectors for indirect conversion medical imaging,” Proc. SPIE Medical Imaging, 2011.
• K. Wang, M. Y. Yazdandoost, R. Keshavarzi, K.-W. Shin, C. Hristovski, S. Abbaszadeh, F. Chen, S. H. Majid, and K. S. Karim, “Integration of an amorphous silicon passive pixel sensor array with a lateral amorphous selenium detector for large area indirect conversion X-ray imaging applications,” Proc. SPIE Medical Imaging, 2011.

2010

• S. Abbaszadeh, K. Wang, N. Allec, F. Chen, and K. S. Karim, “High gain lateral amorphous selenium (a-Se) detector for medical imaging,” Proc. 5th Canadian Student Conference on Biomedical Computing and Engineering, 2010.

2007

• F. Hossein-Babaei and S. Abbaszadeh, “Fabrication and assessment of a gas sensitive silver-rutile Schottky diode,” Proc. 10th International Conference and Exhibition of the European Ceramic, 2007.