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Genitourinary Brachytherapy Specialists

Steven J Frank, MD

Professor of Radiation Oncology
MD Anderson Cancer Center

Areas of expertise: Prostate brachytherapy

Dr. Frank is an endowed tenured professor of Radiation Oncology at The University of Texas MD Anderson Cancer Center, the Medical Director of MD Anderson’s Proton Therapy Center, and leader of both the Proton Therapy Program for head and neck cancer and the Prostate Brachytherapy Program. Dr. Frank also serves the Division as Director of Advanced Technologies in Radiation Oncology; he is amongst the first, if not the first, to use Intensity-Modulated Proton Therapy (IMPT) to treat head and neck tumors. Dr. Frank is the Principal Investigator of an NIH/NCI-sponsored Phase II/III randomized trial in oropharyngeal cancer that compares outcomes after chemoradiation given by IMRT versus IMPT. His other major clinical research accomplishment includes the successful accrual of 300 patients in a Phase II protocol for prostate cancer. Dr. Frank’s expertise in MRI radiotherapy has led to the development and FDA approval of a novel positive-contrast implantable marker for use in MRI-guided prostate brachytherapy. As founder of the company, C4 Imaging, Dr. Frank has developed the MRI marker technology at MD Anderson, currently holds 31 national and international patents and has continued MRI-Assisted Radiosurgery (MARS) at MD Anderson for the treatment of prostate cancer. He has funding from the NIH, the Prostate Cancer Foundation, the Texas Ignition Fund, Hitachi and MD Anderson, and he has also raised three rounds of private equity financing to advance C4 technology. Dr. Frank’s expertise in prostate brachytherapy is reflected by his service as past President and Chairman of the Board of the American Brachytherapy Society. Dr. Frank’s expertise in head and neck cancer has been acknowledged by his chairing the American Board of Radiology’s Oral Examinations Program for head and neck cancer.

Peter Rossi, MD

Radiation Oncologist
Calaway-Young Cancer Center
Valley View Hospital, Glenwood Springs, CO

Areas of expertise: Prostate brachytherapy

I have a comprehensive and active clinic in Radiation Oncology at the Calaway-Young Cancer Center at Valley View, specializing in the multi-disciplinary daily management of cancer patients with a broad range of malignancies. I have expertise in innovative technologies, brachytherapy, radiopharmaceuticals, advanced external beam radiotherapy, clinical research and integrative oncology. To best serve our patients, I work closely with medical oncology and surgical oncology colleagues. My primary research focuses are genitourinary cancers and advanced and innovative technologies, including: LDR and HDR brachytherapy, stereotactic body radiotherapy (SBRT) and radiosurgery (SRS).  Additionally, I study the quality of life in cancer survivors, with a focus of improving the side effect profile of treatment. I am a board member of the American Brachytherapy Society (ABS) and past Chairman of corporate relations committee and corporate advisory board for the American Society for Radiation Oncology (ASTRO).

Timothy Showalter, MD, MPH

Associate Professor of Radiation Oncology
University of Virginia School of Medicine

Areas of expertise: Prostate brachytherapy

Clinical Interests
Dr. Showalter provides radiation treatment for patients with genitourinary, gynecologic, pediatric, melanoma and sarcoma cancers. His practice involves advanced external beam radiation therapy techniques, such as intensity-modulated radiation therapy (IMRT), image-guide radiation therapy, image-guided brachytherapy, prostate seed implants and stereotactic body radiation therapy.

Research Interests
As a clinical researcher, Dr. Showalter is focused on improving outcomes for patients with high-risk prostate cancer, developing more effective and convenient radiation therapy schedules, and evaluating advanced technologies for brachytherapy and external beam radiation therapy. Dr. Showalter’s research has resulted in multiple peer-reviewed publications and presentations at national meetings, and he is the recipient of a Young Investigator Award from the Prostate Cancer Foundation to support his career development as a prostate cancer researcher.  He was a faculty member at Thomas Jefferson University in Philadelphia prior to his start at UVA in August 2012.

He is a native of Richmond, Virginia, and lives in Charlottesville with his wife and three children.


  • Board Member, American Brachytherapy Society
  • Chair, Cancer Center Protocol Review Committee
  • Chair, Patient Safety Committee, American Brachytherapy Society
  • Member, GU Cancers Committee and Patient Centered Outcomes Research Committee, NRG Oncology


  • M.P.H., 2015, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
  • M.D., 2004, University of Virginia School of Medicine, Charlottesville, VA
  • B.A., 2000, Chemistry, Washington and Lee University, Lexington, VA


  • Thomas Jefferson University Hospital, Philadelphia, PA


  • American Board of Radiology (Radiation Oncology), May 2010
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