Welcome to Radiation Oncology

Hak Choy, MD
Hak Choy, M.D.

Chair's Message

The mission of this department is three-fold: to deliver world-class care on a daily basis to our patients using the most advanced technologies available; to conduct groundbreaking basic, translational and clinical research; and to provide quality education to the next generation of medical practitioners and scientists.

Recent News

Researchers demonstrate RAS dimers are essential for cancer

Researchers at UT Southwestern’s Simmons Cancer Center have shown that RAS molecules act in pairs, known as dimers, to cause cancer, findings that could help guide them to a treatment.

44 Faces Representing the Future of Biochemistry

Dr. Kenneth Westover was named one of "44 Faces Representing the Future of Biochemistry" in the January 9 special issue of Biochemistry.Dr. Westover, part of our Radiation Oncology lung team, has a lab that focuses on developing new, targeted cancer therapies.

How we're using high-dose radiation therapy to treat kidney cancer

It’s true that kidney cancer doesn’t respond well to conventional, low-dose per treatment radiation therapies. But we’ve found that the disease is sensitive to a type of high-dose per treatment radiation therapy known as stereotactic radiotherapy.

New Study Shows Breast Cancer Death Rate Drops Nearly 40 Percent Over A 25-Year Period

New Study Shows Breast Cancer Death Rate Drops Nearly 40 Percent Over A 25-Year Period

Dr. Larry Kun - 2017 Memphis Business Journal Health Care Heroes Lifetime Achievement honoree

Dr. Larry Kun is this year’s Memphis Business Journal Health Care Heroes Lifetime Achievement honoree for his 32 years of commitment and innovation at St. Jude Children’s Research Hospital. He joined St. Jude in 1984 to help establish a radiation therapy team that specialized in treating childhood cancer. Under his leadership, that program became one of the country’s most successful pediatric brain tumor programs. In 2013, he was appointed to Clinical Director and Executive Vice President. In 2016, Dr. Kun left St. Jude for Dallas to be closer to family. Soon after, he joined UT Southwestern as Professor and Director of Educational Programs for Radiation Oncology and Professor for Pediatrics.

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