Mission Viejo Radiation Oncology Center is committed to providing the highest quality of cancer care through the application of advanced technology and the expertise of our experienced and compassionate staff. Our board-certified physicians oversee a caring treatment team dedicated to making your experience with us as comfortable as possible.
Dr. Carolyn M. Young
Dr. Carolyn M. Young attended Creighton University where she graduated cum laude with a B.S. in
chemistry and then continued on at Creighton University to receive her medical degree. Dr. Young
completed an internship and residency program in internal medicine at St. Mary’s Hospital in San
Francisco. She then did a residency in radiation oncology at University of Southern California.
Dr. Young has served as chair of the cancer committee and has been a member of the executive
committee at Mission Hospital. She is also a member of the tumor board at Mission Hospital and at
Saddleback Memorial Medical Center, San Clemente, California. She is a member of the ASTRO and the AMA.
Dr. William W. Chou
Dr. William W. Chou attended Stanford University where he earned his B.S. in Biology with honors
and a B.A. in Political Science studying at Stanford University in 1996. He went on to attend Stanford
School of Medicine where he graduated with honors in 2001. His internship was done at
the UCLA/West Los Angeles VA Hospital.
Dr. Chou went to Memorial Sloan-Kettering Cancer Center in New York City for his radiation
oncology residency where he participated in clinical research and wrote numerous publications
specializing in Intensity Modulated Radiation Therapy for head and neck cancers. Dr. Chou’s other
areas of expertise include permanent and temporary seed implants in the treatment of various
malignancies including prostate cancer. Dr. Chou is also fluent in Mandarin.
Mission Viejo Radiation Oncology Center provides patients with some of the most advanced treatment technologies available in the healthcare industry. Some of the treatments and technologies available at Mission Viejo Radiation Oncology Center include:
Intensity Modulated Radiation Therapy (IMRT) – a sophisticated type of external beam radiotherapy which allows delivery of precisely targeted radiation beams to tumors, while sparing the surrounding healthy organs and tissues.
Image Guided Radiotherapy (IGRT) – visualized CT scans that verify target locations immediately before treatment delivery. In conjunction with IMRT, this allows for unprecedented accuracy in delivering radiotherapy.
Three-Dimensional Conformal Radiation Therapy (3D-CRT) – a sophisticated set of computer assisted tomography scans (CT or CAT scans) and/or magnetic resonance imaging scans (MR or MRI scans) that create detailed, three-dimensional representations of tumors and surrounding organs for precise delivery of radiation beams to the exact
size and shape of the tumor.
High Dose Rate Brachytherapy (HDR) – an innovative form of internal radiotherapy that places radioactive materials directly
in contact with cancer tissues using catheters or wires, which are then removed when
a curative dose has been delivered to the cancer. This comprehensive, aggressive
approach to treatment ensures the maximum radiation dose is given where you need it
most, while sparing the healthy surrounding tissue.
Prostate Seed Implants – rice-sized “seeds” of radioactive material that are placed into a cancerous prostate. Seeds
can be left in place permanently, as they give off radiation for a specific period of time
(weeks or months), and do not need to be removed once the radiation is gone. Due to
their high success rate, prostate seed implants are an alternative to radical surgery, and
are one of the most popular radiation procedures in the United States.
MammoSite® Radiation Therapy System – a highly targeted procedure performed after
a lumpectomy that uses a catheter (or catheters) to insert a radiation seed directly into the
breast for a few minutes, twice a day for five days. After each treatment, the seed is
removed and no radiation remains in the breast between treatments.
Mission Viejo Radiation Oncology Center
27800 Medical Center Road, Suite 160
Mission Viejo, CA 92691
Phone: (949) 364-9120
Fax: (949) 364-8465
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