Faculty

Dosimetrist Zeke Ramirez and Instructor Marissa Johnson discuss linear accelerator functionality with a radiation therapy student.
Dosimetrist Zeke Ramirez and Instructor Marissa Johnson discuss linear accelerator functionality with a radiation therapy student.

Faculty members in the Radiation Therapy Program are dedicated to bringing students a superb educational experience. You’ll learn with nationally recognized professionals who are directly involved in patient care in UT Southwestern hospitals and clinics.

Marissa Johnson, M.S.R.S., RT(T)
Assistant Professor and Program Director
Education: BSRT, Radiation Therapy, University of Oklahoma, 2002; MS, Radiologic Sciences, Midwestern State University, 2011
Affiliations: ARRT, ASRT, NTSRT, AEIRS

Corry Defrates, B.S.R.S., RT(T)
Instructor and Clinical Coordinator
Education: BSRS, Radiologic Science, Southwestern Illinois University 
Affiliations: ARRTASRTNTSRTAEIRS

Steven L. Russell, J.D., M.P.H.
Adjunct Instructor
Graduate School: J.D., University of Memphis School of Law, 1985; M.P.H., University of Texas School of Public Health, 2010
Interests: Law and Ethics, Public Health Law   

Strahinja Stojadinovic, Ph.D.
Assistant Professor
Graduate School: Ph.D., Kent State University, 2004
Interests: Development of tools for evaluating animal cancer models