Georgetown University Hospital Residency Program in Radiation Physics | MedStar Health

Program Overview

The Radiation Physics Residency program at the MedStar Georgetown University Hospital (MGUH) is structured as a two-year clinical training program for individuals who intend to work in Radiation Oncology Physics.

The goal of our physics residency program is to educate and train physics residents to gain professional knowledge and practice skills in clinical radiation oncology physics for working independently in either academic or community practice settings. The primary training site, MGUH, includes a wide range of state-of-the-art radiation oncology technologies and modalities, for instance, the world’s first Mevion HYPERSCAN pencil beam scanning proton therapy system. Residents will be provided broad-based, in-depth training and participate in the breadth of routine clinical duties under the close supervision of experienced medical physicists. Upon completion of the program, residents will demonstrate competencies in routine clinical practice and will be prepared for the professional examination and licensure process in the specialty of Therapeutic Medical Physics.

Our Radiation Physics Residency Program has been granted full accreditation of the Commission on Accreditation of Medical Physics Education Programs (CAMPEP). We currently have two residents in training.

Program Staff

Program staff members at MGUH include 8 physicists and 5 dosimetrists possessing a variety of expertise in conventional linac external beam radiation therapy, HDR/LDR brachytherapy, CyberKnife/ZAP stereotactic radiosurgery, proton therapy, and radiation safety and protection. The program is directed by Dalong Pang, Ph.D., Chief of Physics and Program Director.

Group photo of a team of faculty and residents from the Radiology Physics Residency Program at MedStar Georgetown University Hospital


The sponsoring institution for the Radiation Physics Residency is the MedStar Georgetown University Hospital (MGUH), a member hospital of MedStar Health, with over 600 beds located in the historic Georgetown neighborhood of Washington, D.C. MGUH is an academic partner with Georgetown University Medical Center (GUMC) and the Georgetown University School of Medicine. GUMC receives over $100 million in annual research funding and is home to numerous world class cancer researchers. The Department of Radiation Medicine is a central component of the Georgetown Lombardi Comprehensive Cancer Center (LCCC), a National Cancer Institute designated Comprehensive Cancer Center since 1974, and Washington D.C.’s only comprehensive cancer center. The LCCC is a leader in cancer research, education, treatment, and community service.

The Department of Radiation Medicine was established at Georgetown University Hospital in 1979. In 2000 Georgetown University Hospital became part of MedStar Health, an integrated healthcare system with multiple hospitals in the mid-Atlantic region, and was renamed MedStar Georgetown University Hospital (MGUH). Current treatment technology in the Department includes two modern Varian linear accelerators, two Accuray CyberKnife robotic radiosurgery systems, one ZAP-X stereotactic radiosurgery system, one Mevion HYPERSCAN PBS proton beam therapy system, one Carl Zeiss Intrabeam system and one IntraOp Mobetron system for intraoperative radiation therapy (IORT), one Varian GammaMedplus iX remote afterloader system for HDR brachytherapy, one Varian VariSeed prostate seed implant system, and one Siemens SOMATOM Definition Edge dual energy large bore CT simulator with 4D and gated CT capability together with Varian respiratory gating for scanners (RGSC) system. MGUH was one of the first hospitals to establish a CyberKnife program with two CyberKnives and was the world’s first hospital to install the Mevion S250i HYPERSCAN proton system and the first proton facility in the greater Washington D.C. metropolitan area. Furthermore, MGUH was also the second hospital in the US and the first on the east coast to install the cutting-edge ZAP-X radiosurgical system for stereotactic treatment of brain lesions. Treatment planning systems include Varian Eclipse and BrachyVision, Accuray Precision, RaySearch RayStation, and ZAP-X treatment planning systems. Brachytherapy procedures include permanent prostate seed implants and HDR gynecological procedures. Special programs include total body irradiation, liver Yttrium-90 microspheres, intraoperative X-ray irradiation of breast surgical bed, and intraoperative electron beam irradiation of surgical bed of gastrointestinal cancers.

Life in the Nation’s Capital

As the Nation’s Capital, the Washington D.C. metropolitan area has many attractions including museums, parks, performing arts venues as well as an active nightlife. The Georgetown neighborhood is particularly known for its restaurants and shops both on M Street and on the waterfront. Washington D.C. is located between the Blue Ridge Mountains and the Chesapeake Bay, and it offers diverse opportunities for outdoor recreation. Ranked by U.S. News and World Report as the #1 best city to find a job, it is an important center for health care where far-reaching policy decisions are made. The Washington D.C. metropolitan area is home to the National Institutes of Health, which comprises of 27 separate institutes and centers of different biomedical disciplines, including the National Cancer Institute, and many other federal government agencies, such as the FDA and NIST.

Clinical Rotations

There are eight clinical rotations each occurring in three-month block for physics residents during two-year training. The clinical rotations cover the following topics:

  • Linac Radiotherapy

    • Operation of linacs in clinical and service modes for plan and radiation delivery; Use of physics and service mode for problem resolution
    • Daily, monthly, and annual QA of linacs; Output, dose rate, energy, and profile adjustments
    • IMRT and VMAT QA, use of 2D array and portal imager for radiation measurements and analyses; Use of specialty software for data analyses
    • Linac acceptance and commissioning
    • Commissioning of treatment planning system
    • Treatment planning: hand calc, computer aided 3DCRT, IMRT, VMAT
    • Plan and chart checks, special physics consultation
    • Design and fabrication of treatment aids
    • Linac-based SRS, SRT, and SBRT
    • IGRT, Use of KV, MV, and CBCT for image acquisition and calibration of the imagers
  • CT and CT simulation

    • Operation of CT for 3D and 4D-CT acquisition
    • Monthly and annual calibration of CT
    • CT simulation for treatment planning for different radiation delivery modalities
  • CyberKnife and ZAP Radiotherapy

    • Use of CyberKnife and ZAP for treatment delivery
    • Use of different tracking modes for target tracking
    • Daily, monthly, and annual calibration of CyberKnife and ZAP
    • Treatment planning for CyberKnife and ZAP
  • Proton Therapy

    • Operation of the Mevion HYPERSCAN proton system in clinical, physics, and service modes
    • Daily, monthly, and annual calibration of the HYPERSCAN
    • Proton treatment planning using RayStation
    • Use of specific radiation measurement devices for proton beam characterization
  • Brachytherapy

    • Varian HDR pre-treatment, quarterly and annual QA, source exchange calibration
    • HDR treatment planning using BrachyVision
    • Ultrasound guided prostate seed implant procedure
    • Calibration of seeds
    • Treatment planning using VariSeed
    • SirSphere and TeraSphere procedure
  • Special Procedures

    • Carl Zeiss Intrabeam for breast lumpectomy cavity irradiation
    • IntraOp Mobetron for intraoperative GI cancer bed irradiation, commissioning
    • Total Body Irradiation, commissioning and procedure, in vivo dosimetry, use of TLD, film, and other applicable dosimeters
  • Radiation shielding and safety considerations

    • Shielding design of linac vaults
    • Radiation surveys, leakage testing, and other requirements of regulatory agencies
    • NRC-Mandated Quality Management Program: review of QMP document, implementation, and audit.


A resident candidate should have completed most didactic courses required for this program in his/her Ph.D. or M.S. studies. Further education can be acquired through attendance of weekly medical resident lectures, department chart round and proton round throughout the year. When necessary, a physics resident may take a relevant physics course offered through the CAMPEP accredited Graduate Program in Medical Physics at Georgetown University or physics and radiobiology lectures offered to the medical residents by the faculty at the Department of Radiation Medicine.

Participation in clinical and translational research are strongly encouraged of the physics residents. The department supports resident’s travel for presentation of abstracts at international professional meetings and attendance of local AAPM chapter meetings.


The admission to the MGUH Radiation Physics Residency Program is in compliance with the CAMPEP standards. 1) Applicants should possess a Ph.D. or M.S. degree in Medical Physics graduated from a CAMPEP accredited Medical Physics Graduate Program; 2) Applicants with a Ph.D. degree in physics or relevant fields should complete a CAMPEP accredited Certificate Program. Alternately, those with a Ph.D. degree in physics or relevant fields and completed the graduate coursework in the following six subjects may apply. Six subjects are:

  • Radiological Physics and Dosimetry
  • Radiation Protection and Radiation Safety
  • Fundamentals of Imaging in Medicine
  • Radiobiology
  • Anatomy and Physiology
  • Radiation Therapy Physics

Our radiation physics residency program will not participate in the Medical Physics Match program or use the AAPM Common Application System

The application should include a personal statement, academic transcripts, CV, and three letters of recommendation, compiled into a single PDF. Please email the application to the program director (Dalong Pang, PhD) and residency coordinator (Mariah Walk). Alternatively, referees may choose to submit letters of recommendation directly to the program.

General timeline for the selection process follows this schedule: Applications are due by October 31st, 2023. The applications will be reviewed in November and interviews will be conducted in December. We aim to fill the position by January 2024.

For additional information about our program, please contact our program director and/or program coordinator.

Statistics of Radiation Physics Residents

 Academic Year
 Number of Applications  Number Offered Admission Number Enrolled in Program   Number Completing Program
 2021  6  1  1  0
 2022  9  1  1  0
 2023  7  1  1  1


  Destination of Graduates
 Academic Year  Clinical  Industry  Academic  Government  Additional Education  Still Seeking Position  Other
 2021  0  0  0  0  0  0  0
 2022  0  0  0  0  0  0  0
 2023  0  0  1  0  0  0  0



Current Residents

Peter Jermain

Peter Jermain, PhD, MS


Peter Jermain received the Ph.D. degree in Physics/Medical Physics from the University of Massachusetts in 2023. His PhD research focused on development and translation of multimodal imaging technologies for cancer detection. In 2021, he joined the Department of Radiation Oncology at Massachusetts General Hospital as a full time Physics Assistant, where he supported a wide range of clinical physics operations. He is an active member of AAPM, currently serving as Vice Chair for the Working Group on Student and Trainee Research, and excited to receive comprehensive training in radiation therapy physics at Georgetown.

Boran Zhou

Boran Zhou, Ph.D.


Boran Zhou received the B.S. degree from Harbin Institute of Technology in China in 2009, and the Ph.D. degree from the Biomedical Engineering program in University of South Carolina in 2014. In 2016, he joined the Mayo Clinic as a senior research fellow in the Department of Radiology. In 2020, he joined the Emory University as a research scientist in the Department of Radiation Oncology. His research interests include quantitative ultrasound imaging for assessing tissue toxicity, ultrasound elastography, soft tissue computational and experimental modeling, biomedical engineering, instrumentation, and clinical translational research.

Financial Support

Physics residents in this program are supported by funds from the MedStar Georgetown University Hospital (MGUH). Yearly stipends and benefit package are matched to those for medical residents as outlined by the office of MedStar Graduate Medical Education (GME). Benefits include comprehensive health and supplemental dental and vision benefits, retirement benefits and savings plan, life and disability insurance, paid time off, etc. Further information can be obtained on the GME website under Salary and Benefits.

Contact Information

Please contact our residency coordinator or program director for any additional information.

Mariah Walk
Program Coordinator
Phone: 202-444-0603
Fax: 202-444-3786

Dalong Pang, Ph.D.
Program Director
Phone: 202-444-4069