Dr. Ha is professor and chairman of the department of radiation oncology at The University of Texas Health Science Center San Antonio and the CTRC. He completed his medical education and residency training at Harvard and spent 14 years at The University of Texas M.D. Anderson Cancer Center before joining the faculty at the Health Science Center. He is a nationally recognized expert in radiation oncology, especially for hematological malignancies such as lymphoma, myeloma and leukemia. He has a special expertise in unique treatment procedures such as total body irradiation in preparation for bone marrow transplant, total skin electron beam radiation therapy for certain skin conditions and radioimmunotherapy for lymphomas. His current research interests include development of drugs that reduce the side effects of radiation therapy and chemotherapy, and development of agents that are selective to cancer cells for imaging and targeted therapy.