Medical Physics Section

The Medical Physics Section of the Department of Radiation Oncology at the Medical College of Wisconsin consists of 14 physicists, 10 dosimetrists, 1 research associate, 7 postdoctoral research fellows, and 4 physics residents.

Medical Physics Section mission:

  • To provide the best possible radiation therapy technical support for the patients treated at all sites serviced by the Department of Radiation Oncology
  • Through clinical research, develop the accuracy and efficiency of cancer treatment, integrating new technical innovations in radiation therapy
  • To educate future generations of physicians and physicists in the art and science of radiation oncology physics

Medical Physics Faculty

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Ergun Ahunbay, PhD

Ergun Ahunbay, PhD

Ergun Ahunbay, PhD, is an Associate Professor. His research interests include intensity modulated radiation therapy (IMRT) and image guided radiation therapy (IGRT).

Eric Paulson, PhD

Eric Paulson, PhD

Eric Paulson, PhD, is an Associate Professor in Radiation Oncology with secondary appointments in the Radiology and Biophysics departments. His research is focused on the development and application of advanced MRI imaging technologies for MRI-guided radiation treatment planning and delivery.

Kristofer Kainz, PhD

Kristofer Kainz, PhD

Kristofer Kainz, PhD, is an Associate Professor and Director of the Medical Physics Residency Program and Medical Physics Certificate Programs. His research interests include intensity modulated radiation therapy (IMRT) and image guided radiation therapy (IGRT).

An Tai, PhD

An Tai, PhD

An Tai, PhD, is an Assistant Professor. His research interests include motion management and stereotactic body radiation therapy (SBRT).

X. Allen Li, PhD, DABMP, FAAPM

X. Allen Li, PhD

X. Allen Li, PhD, is Professor and Chief of Medical Physics in the department. Dr. Li's research interests range from adaptive radiation therapy, outcome modeling, to MRI guided radiation treatment planning and delivery.

Medical Physics Staff, Residents and Postdoctoral Fellows

Katherine Albano, MS

Katherine Albano, MS

Katherine Albano, MS, is a senior physicist, lead physicist for the Drexel Town Square Health Center, Radiation Oncology and a lead physicist for the Gamma Knife program.

George Noid, PhD

George Noid, PhD

George Noid, PhD, is a medical physics resident with research interests including image quality assessments of model-based iterative CT reconstruction and development of a transabdominal ultrasound probe for tracking intrafractional pancreatic motion.

Guang-Pei Chen, PhD

Guang-Pei Chen, PhD

Guang-Pei Chen, PhD, is the Clinical Director of Medical Physics. His research interests include intensity modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), programming in radiation oncology and patient safety.

Tia Plautz, PhD

Tia Plautz, PhD

Tia Plautz, PhD, is a postdoctoral fellow studying texture stability in CT and MRI using radiomics techniques.

Xiaojian Chen, PhD

Xiaojian Chen, PhD

Xiaojian (Victor) Chen, PhD, is a medical physicist currently working on research in the area of adaptive radiation therapy.

Douglas Prah, PhD

Douglas Prah, PhD

Douglas Prah, PhD, is a senior medical physicist at the Froedtert and Medical College Clinical Cancer Center and at the Froedtert Health West Bend Alyce and Elmer Kramer Cancer Center.

Xinfeng Chen, PhD

Xinfeng Chen, PhD

Xingfeng Chen, PhD, is a medical physics resident focusing on MR-linac dosimetric effects of magnetic field and electron density assignment as well as MRI-based IMRT planning and evaluation of treatment planning systems.

Phillip Prior, Jr., PhD

Phillip Prior, Jr., PhD

Philip Prior, Jr., PhD is a medical physicist and the lead physicist at the Froedtert Health West Bend Alyce and Elmer Kramer Cancer Center. His research interests include dose-response modeling of tumors and normal tissues, doses effects of magnetic field for IMRT & VMAT plans and development of treatment planning strategies for the MR-Linac.

Dan Grimm, MS

Daniel F. Grimm, MS

Dan Grimm, MS, is a senior medical physicist working at the Clement J. Zablocki VA Medical Center.

Jason Rownd, MS

Jason Rownd, MS

Jason Rownd, MS, is a senior medical physicist and the lead physicist for the brachytherapy program.

Slade Klawikowski, PhD

Slade Klawikowski, PhD

Slade Klawikowski, PhD, is a medical physicist working on research in the areas of image-guided radiotherapy (IGRT), scintillation dosimetry and 3D dosimetry.

Aydin Sanli, PhD

Aydin Sanli, PhD

Aydin Sanli, PhD, is a postdoctoral fellow working on development and performance of a quality assurance (QA) software tool for 3D-based independent MU verification of online replanning with a conventional MR-Linac.

Sara Lim, PhD

Sara Lim, PhD

Sara Lim, PhD, is a medical physics resident focusing on using CT radiomics to predict and track radiation treatment response in lung cancers.

Diane Schott, PhD

Diane Schott, PhD

Diane Schott, PhD, is a medical physics resident focusing on tracking physical qualities of the pancreas over treatment duration and exploring possible correlations between physical qualities and treatment response for pancreatic cancer.

Francisco Lopez, MS

Francisco Lopez, MS

Francisco Lopez, MS, is a senior medical physicist overseeing day-to-day dosimetry workflows and teaching radiation physics to RT students, medical and physics residents and physics postdoctoral fellows.

Ranjeeta Thapa, PhD

Ranjeeta Thapa, PhD

Ranjeeta Thapa, PhD, is a postdoctoral fellow focusing on image-guided adaptive radiation therapy and also studying the CT radiomics to track the response in the heart during radiation.

Natalya Morrow, PhD

Natalya Morrow, PhD

Natalya Morrow, PhD, is a Senior Medical Physicist and the lead physicist for the Department of Radiation Oncology at the Clement J. Zablocki VA Medical Center.

JingQiao Zhang, PhD

JingQiao Zhang, PhD

JingQiao Zhang, PhD, is a postdoctoral fellow focusing in automation of fast on-line adaptive therapy and auto contour with machine learning and computer vision.

Farshad Mostafaei, PhD

Farshad Mostafaei, PhD

Farshad Mostafaei, PhD is a postdoctoral fellow focusing on improving respiration motion management during radiation therapy delivery for abdominal and thoracic cancer and real-time organ motion monitoring using ultrasound and kV fluoroscopy during lung SBRT delivery.

Ying Zhang, PhD

Ying Zhang, PhD

Ying Zhang, PhD, is a postdoctoral fellow working on contour quality assurance for adaptive radiation therapy.

Haidy Gerges Nasief, PhD

Haidy Gerges Nasief, PhD

Haidy Gerges Nasief, PhD, is a postdoctoral fellow focusing on developing machine learning algorithms utilizing CT radiomics to classify and predict treatment response for pancreatic cancer.

Contact Radiation Oncology

Mailing Address

Department of Radiation Oncology
The Medical College of Wisconsin
8701 Watertown Plank Rd.
Milwaukee, WI 53226

Physical Location and Shipping Address

Department of Radiation Oncology
Froedtert Hospital, Third Floor-Specialty Clinics
9200 W. Wisconsin Ave.
Milwaukee, WI 53226

(414) 805-4400 | (414) 805-4369 (fax)

Maps & Directions to MCW
Maps & Directions to Froedtert Hospital
Radiation Oncology Site Map

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