Iris Zhou Wang

Radiation Oncology

Specializing In:

Conventional External Beam Radiotherapy Brachytherapy (HDR and LDR) Intensity-modulated radiation therapy (IMRT) including VMAT Image-guided Radiotherapy (IGRT) Respiratory Gating and Motion Management Special Procedures: SBRT/SRS/IORT/TBI/TSEI Linear accelerator commissioning Quality assurance and quality management program

Research Interests:

Imaging modalities in radiation therapy Image-guided radiotherapy Image-guided radiotherapy Surface-guided radiotherapy Respiratory motion management Adaptive Radiotherapy Spatially Fractionated Radiotherapy Quality Assurance Risk analysis and patient safety

About Iris Zhou Wang


I received my PhD in Biophysical Sciences with a concentration in Radiological Imaging Physics from University at Buffalo in 2004. I then completed a two-year residency in Therapeutical Physics in the Department of Radiation Medicine at Roswell Park Cancer Institute. After graduating from the residency program in 2006, I continued my career as faculty medical physicist at Roswell Park till 2021. From 2021 to 2022, I spent one year at Duke University Health System as faculty medical physicist which gave me the opportunities to further develop my clinical physics expertise. I then returned to Roswell Park Comprehensive Cancer Center mid-2022 as faculty medical physicist.

My clinical experiences cover various aspects of medical physics practices in radiation oncology, including conventional treatment modalities in both external beam radiotherapy and brachytherapy, advanced techniques such as IMRT, VMAT, respiratory gating motion management and image-guided radiotherapy, and special radiation treatment procedures such as SBRT, SRS, IORT, TBI and TSEI. I chaired the Patient Safety Committee in the Department of Radiation Medicine for over 5 years in the past, and I was appointed as Director of External Beam Quality Insurance Program in the medical physics division of the department in 2023. My credentials and honors also include Diplomate of the American Board of Radiology (ABR) in Therapeutic Medical Physics and Fellow of the American Association of Physicists in Medicine (AAPM).

I am faculty of the CAMPEP accredited Medical Physics Program at the University at Buffalo. I am passionate about using various educational tools to train professional medical physicists for the future. Over the years, I have taught didactic courses and supervised numerous master’s and PhD graduate students. One of the great joys of mentorship is seeing the successes of my students as they go on to match with residency programs and eventually becoming board certified medical physicists. Many of them also entered academic medical centers like Roswell Park and became educators themselves.

The field of radiation oncology is evolving rapidly with the development of cutting-edge technologies, such as new treatment/imaging modalities and the introduction of Artificial Intelligence (AI) to the field. I recently developed interests in Adaptive Radiotherapy (ART) and Spatially Fractionated Radiotherapy (SFRT). Both will bring personalized medicine into the picture of radiation oncology and have promising improved outcomes for patients under radiation treatment. As I am exploring exciting new opportunities, my priority as clinical medical physicist continues to be the safe delivery of high-quality radiation treatment to our patients.


Roswell Park Comprehensive Cancer Center
  • Associate Professor of Oncology
  • Senior Medical Physicist
  • Director of External Beam QA Program
  • Department of Radiation Medicine

State University of New York at Buffalo

  • Research Assistant Professor
  • Faculty, Medical Physics Program


Education and Training:

  • 2004- PhD - Biophysical Sciences, State University of New York at Buffalo, Buffalo, NY
  • 1993 - MS - Physics, Nankai University, Tianjin, China
  • 1990 - BS - Biomedical Physics, Nankai University, Tianjin, China


  • 2006- Residency - Medical Physics, Roswell Park Comprehensive Cancer Center

Board Certification:

  • Therapeutic Radiological Physics, American Board of Radiology

Professional Memberships:

  • American Association of Physicists in Medicine
  • Upstate New York Association of Physicists in Medicine (an AAPM chapter)
  • American Society for Therapeutic Radiology and Oncology
  • The Radiosurgery Society

Honors & Awards:

  • Fellow - American Association of Physicists in Medicine


A. Lau, K.E. Salerno, T. Ma, and I.Z. Wang; Dosimetric impact and modeling of prone breast positioning device and couch structures, Medical Dosimetry, 46(3), 219-228 (2021). Available online Jan 19, 2021:S0958-3947(20)30162-X. doi: 10.1016/j.meddos.2020.11.006. Epub ahead of print. PMID: 33483223

Y. Cao, T. Ms, S.F. de Boer, and I.Z. Wang; Image artifacts caused by incorrect bowtie filters in cone‐beam CT image‐guided radiotherapy, J. Appl. Clin. Med. Phys., online first DOI: 10.1002/acm2.12888. First published: 08 May 2020.

T.E. Tyson, M.B. Podgorsak, A.K. Singh, and I.Z. Wang; Improved Dose Homogeneity Using Electronic Compensation Technique for Total Body Irradiation, J. Appl. Clin. Med. Phys. 19(3), 159-167 (2018).

Z. Xu, R. Yao, M.B. Podgorsak, and I.Z. Wang; Effects of collimator angle, couch angle and starting phase on motion-tracking dynamic conformal arc therapy (4D DCAT), J. Appl. Clin. Med. Phys. 18(5), 54-63 (2017).

C. Rivers, I. AlDahlawi, I.Z. Wang, A. Singh, and M.B. Podgorsak; Assessment of the dose penumbra in hemi-body skin electron irradiation, J. Appl. Clin. Med. Phys. 17(6), 276-282 (2016).