St. Joseph Hospital of Orange
1100 West Stewart Dr, Orange, CA 92868714.633.9111
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Radiation Oncology

Intraoperative Radiation Therapy (IORT)

St. Joseph Hospital remains at the forefront of medical innovation with intraoperative radiation therapy (IORT), one of the most advanced forms of radiation therapy available in the United States. IORT delivers highly targeted beams of radiation directly to a tumor site during surgery.


In addition to improving patient outcomes, this direct application improves patient comfort and appearance by preserving healthy tissue surrounding the tumor and reducing the amount of radiation patients may need after surgery. For patients and their families, this means less stress and more time for healing.

As Orange County's first hospital to offer this advanced form of radiation therapy for breast cancer patients, St. Joseph Hospital physicians are experts in its use and will continue their pursuit of clinical excellence and increased patient comfort by expanding the use of IORT to treat additional cancer sites in the future.

Click here to find out more about IORT.