Amirhossein Goldan

Amir H. Goldan, Ph.D.
Assistant Professor of Radiology



  • Post Doc, Stony Brook University, Dept. of Radiology, Stony Brook, NY
  • Ph.D., Electrical Engineering, University of Waterloo, Waterloo, ON, Canada
  • B.A.Sc., Electrical Engineering, Simon Fraser University, Vancouver, BC, Canada


  • 2005-2006, Undergraduate student research award, NSERC, Canada
  • 2006, Honorable mention poster award, SPIE medical imaging conference, San Diego, CA
  • 2006-2007, Postgraduate scholarship masters, NSERC, Canada
  • 2006, 1st prize, SMC industrial collaboration award, TEXPO research exhibition, Canada
  • 2008, 2nd prize, Imagine imaging poser competition, University of Waterloo, Canada
  • 2008-2009, Ontario graduate scholarship, OSAP, Canada
  • 2008-2010, President’s graduate scholarship, University of Waterloo, Canada.
  • 2008-2010, Alexander Graham Bell Canada graduate scholarship doctoral, NSERC, Canada
  • 2009, Honorable mention poster award, SPIE medical imaging conference, San Diego, CA
  • 2009, Graduate student scholarship, ECE Dept., University of Waterloo, Canada
  • 2010, Nano-fellowship, Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Canada
  • 2013, Best paper award, IEEE Nuclear Science Symposium, Seoul, Korea
  • 2014, 1st place oral presentation award, Young Research Symposium, BNL, USA
  • 2014-2016, Post-doctoral Fellowship (PDF), NSERC, Canada
  • 2016, 1st place (cum laude) poster presentation award, SPIE Medical Imaging Conference, USA 


  • 2017, NIH R21 (pending): Principal Investigator, “Field Shaping SHARP-AMFPI: Towards Large-Area, High-Efficiency, and Low-Dose X-ray Imaging,” ranked 14th percentile.
  • 2017, NIH R21 (funded): Principal Investigator, “Se-SSPM: Towards a Low-Cost MR-Compatible Time-Of-Flight PET,” ranked 6th percentile.
  • 2017, NIH REACH POC (funded): Principal Investigator, “Selenium Multi-Well Avalanche Detector for Medical Imaging Applications: mammography and Time-Of-Flight PET.”
  • 2016, NIH REACH POC (funded): Principal Investigator, “NEW-HARP: A highly sensitive avalanche selenium detector for time-of-flight (TOF) positron emission tomography (PET).”
  • 2015, NIH R21 (funded): Co-Principal Investigator, ”SWAD: Towards Photon Counting Using Amorphous Selenium.”
  • 2014, SBU-BNL SEED (funded): Principal Investigator, “Molecular Structure of Thin-Film Amorphous Selenium.”

Selected Publications:

  • A. H. Goldan, C. Li, S. J. Pennycook, J. Schneider, A. Blom, and W. Zhao, “Molecular structure of thin-film amorphous selenium,” J. Appl. Phys. 120, p. 135101 (2016).
  • J. R. Scheuermann, A. H. Goldan, O. Tousignant, S. Léveillé, and W. Zhao “Development of solid-state avalanche amorphous selenium for medical imaging,” Med. Phys. 42, 1223 (2015).
  • A. H. Goldan, J. A. Rowlands, O. Tousignant, and K. S. Karim, “Unipolar time-differential charge sensing in non-dispersive amorphous solids,” J. Appl. Phys. 113, 224502 (2013). This Article appeared on the cover of Vol. 113, issue 22.
  • A. H. Goldan and W. Zhao, “A field-shaping multi-well avalanche detector for direct conversion amorphous selenium,” Med. Phys. 40, 010702 (2013). 
  • A. H. Goldan, O. Tousignant, K. S. Karim, and J. A. Rowlands, “Solid-state Charpak detector with unipolar and ultrafast time-differential pulse response,” Appl. Phys. Lett. 101, 213503 (2012)

Issued Patents:

  • A. H. Goldan, J. A. Rowlands, and W. Zhao, “Nano-electrode multi-well high-gain avalanche rushing photodetector,” US Patent No. 9,660,115 (2017).
  • A. H. Goldan and W. Zhao, “A field-shaping multi-well avalanche detector for direct conversion amorphous selenium,” US Patent No. 9,553,220 (2017).
  • A. H. Goldan, “Spatially resolved diffusive reflectance spectroscopy apparatus and method for use thereof,” US Patent No. 9,239,289 (2016). Assigned to MedView Technologies Inc. (
  • K. S. Karim, K. Wang, A. H. Goldan, “Method and apparatus for a lateral radiation detector,” US Patent No. 8,836,069 B2 (2014). Licensed to KA Imaging, Waterloo, ON, Canada (
  • A. H. Goldan and K. S. Karim, “Method and apparatus for a radiation detector,” US patent 8,129,688 No. (2012). Licensed to KA Imaging, Waterloo, ON, Canada (

Research Highlights:

  • I have been working on the development of large-area avalanche x-ray detectors for more than 10 years. I have extensive experience in the development and fabrication of amorphous selenium (a-Se) radiation detectors, and performed instrumental research work that led to the development of the first ultra-fast field shaping amorphous detector. I have co-invented, developed and optimized a number of different direct and indirect detector technologies. My most significant contribution to research is introducing the novel concept of unipolar time-differential (UTD) charge sensing in amorphous solids using a field shaping multi-well detector structure. This feature enables amorphous detectors to operate at their theoretical limit of charge diffusion and improves their time-resolution by multiple orders-of-magnitude. I also designed, fabricated, and tested the first field shaping a-Se UTD device using the proposed multi-well structure and demonstrated 300-times better time-resolution. A US patent was awarded to this new technology and the 16-page publication in the journal of applied physics appeared on the cover of vol. 113, issue 22.
  • Amorphous selenium (a-Se), in the form of thermally deposited thin films, is the only x-ray photoconductor that has been successfully developed for making large area medical image sensors. It’s also the only amorphous material that has avalanche multiplication gain. I simulated a nanopattern multi-well a-Se detector, called NEW-HARP, to enable the utilization of both avalanche multiplication gain and UTD charge sensing in one device. I showed that, for a-Se operating in the avalanche mode at high electric fields, charge drift occurs via band transport in extended states with non-activated microscopic mobility, and thus, photocarriers experience negligible interruption by capture and thermal-release events due to shallow traps. The implication of (1) non-activated microscopic band-mobility, (2) avalanche gain, and (3) UTD charge sensing is the realization of a photodetector that can achieve < 100 ps time-resolution with a material that is low-cost and uniformly scalable to large-area. The realization of the proposed NEW-HARP would be a great leap forward in radiation detection with applications not only in medical imaging (such as Time-Of-Flight PET), but also in particle physics (such as Cherenkov imaging detectors and trackers), optical communication, and time-domain spectroscopy.

Research Interest:

  • X-Ray and PET Imaging
  • Digital Radiological Imaging Detectors
  • Single Photon Counting for Medical Imaging
  • Detector Modeling, Fabrication, Characterization and Instrumentation
  • Avalanche Amorphous Selenium Detectors
  • Quantum Mechanical Modeling of Charge Transport
  • Noise-Free Avalanche Detectors

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Contact Information:

Stony Brook Medicine
Department of Radiology
HSC Level 4, Room 120 
Stony Brook, NY 11794-8460
Phone:  631-638-8537
Fax: 631-444-7538