About the Program

The Radiation Oncology Physics Residency Program is a two-year program designed for individuals with a M.S. or Ph.D. degree in Medical Physics from aCAMPEP-accredited graduate program, who seek post-graduate training in clinical radiation oncology physics. The program's primary focus is on clinical training in all aspects of radiation oncology physics. Residents who success fully complete the program should be well-prepared for the certification examinations in the specialty of Therapeutic Radiological Physics administered by the American Board of Radiology.

The Clinical Residency Program training involves full-time participation of the physics resident in the clinical routine under the supervision of experienced radiation oncology physicists. Comprehensive training and experience is provided in the areas of radiation safety, radiation machine calibration,quality assurance, clinical dosimetry, treatment planning, treatment aid design and fabrication, and brachytherapy. The therapeutic radiologic physics residency program consists of seven quarterly rotations over a period of two years. 

The rotations include assignments to the following radiation oncology services:

Orientation and Dosimetry Brachytherapy-II
Brachytherapy-I External beam physics/junior physicist
Novalis-I Tomotherapy
External beam physics Elective rotation

Orientation / Dosimetry / External Beam Service PGY-1
  • U.S. D.O.T. radioactive materials shipping training
  • Fundamental radiation safety training
  • Fundamental quality assurance
  • Fundamentals of external beam radiation treatment planning

Brachytherapy PGY-1, 2
  • Ir-192 HDR and LDR
  • I-125/Pd-103 prostate seed LDR implants
  • Cs-137 GYN LDR implants

Novalis PGY-1,2
  • IMRT
  • IGRT
  • stereotactic radiosurgery
  • stereotactic body radiotherapy

Junior Physicist Rotations PGY-2
Tomotherapy (IMRT and IGRT) PGY-2

A "resident qualification card" indicates all required tasks and assignments for each rotation and for the program as a whole. During each rotation, the resident is mentored by a staff medical physicist. Successful completion of each rotation includes completion of all assigned tasks in the qualification card and passing a quarterly comprehensive oral examination, similar to the American Board of Radiology part III oral examination. Residents who are on or ahead of schedule to complete the qualification card have opportunities to participate in research projects within the radiation oncology department.

Program Staff

All residency program staff are certified by the American Board of Radiology in Therapeutic Radiologic Physics (physicists) or Radiation Oncology (physicians).

Naren Ramakrishna, M.D., Ph.D.
Sanford L. Meeks, Ph.D., Chief of Physics
Robert J. Staton, Ph.D.
Amish P. Shah, Ph.D.
Thomas H. Wagner, Ph.D., Residency Program Director
Twyla R. Willoughby, M.S.
Omar Zeidan, Ph.D.

The therapeutic radiologic physics residency program is part of the Departments of Radiation Physics and Radiation Oncology. The departments include five attending physicians, six staff physicists, two physicist residents (one PGY-1 and one PGY-2), and two post-doctoral associates.


The MD Anderson Cancer Center Orlando therapeutic radiologic physics residency program is accredited by the Commission on Accreditation of Medical Physics Educational Programs (CAMPEP) through December 2012. Additional information is available at CAMPEP's website and at the American Association of Physicists in Medicine website.

Application and Program Performance Information

The following program performance information is provided in accordance with CAMPEP accreditation requirements. For the most recent application cycle for which resident applications were accepted, June 2013, there was one applicant, who was offered and accepted admission.  One resident graduated in 2013, and a former resident successfully completed certification in Therapeutic Radiologic Physics by the American Board of Radiology.

Resident Graduated
ABR Certification and Professional Status
 Ph.D., June, 2007
Staff Medical Physicist, MD Anderson Cancer Center Orlando
 Ph.D., December, 2007
Staff Medical Physicist, MD Anderson Cancer Center Orlando
 Ph.D., June, 2009
Medical Physicist, Space Coast Cancer Center, Titusville, FL
 Ph.D., November, 2009
Assistant Professor, University of Michigan, Ann Arbor, MI
 Ph.D., April, 2011
Medical Physicist, Moffitt Cancer Center, The Villages, FL
 M.S., July, 2011
Medical Physicist, St. Luke's Magic Valley Medical Center, Twin Falls, ID
 M.S., December, 2011
Medical Physicist, Mercy Cancer Center, Des Moines, IA
 Ph.D. June 2013
Passed ABR Part I
Faculty Medical Physicist, University of Miami, Miami, FL

Open positions for the therapeutic radiologic physics residency program will be advertised through the CAMPEP Common Application Program (CAP).

For further information, please contact:

Thomas H. Wagner, Ph.D.
Therapeutic Radiologic Physics Residency Program Director
Department of Radiation Physics
MD Anderson Cancer Center Orlando
1400 S. Orange Avenue, MP 730
Orlando, FL 32806