intraoperative radiation therapy
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Related to intraoperative radiation therapy: intraoperative radiotherapy
intraoperative radiation therapyRadiation oncology RT directly in a tumor during surgery. See Radiation oncology.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
in·tra·op·er·a·tive ra·di·a·tion ther·a·py(IORT) (in'trā-op'ĕr-ă-tiv rā'dē-ā'shŭn thār'ă-pē)
Radiation treatment delivered directly to the tumor or tumor bed after the area has been surgically exposed; allows normal healthy tissue to be displaced from the treatment field.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
intraoperative radiation therapyAbbreviation: IORT
The administration of a large dose of radiation to a malignant tumor during surgery. After the tumor is debulked, the surrounding tissues are displaced, temporarily sutured, or protected by the applicator shield. The applicator then delivers a large dose of radiation directly to the affected tissues. IORT is used to manage otherwise unresectable tumors.
See also: radiation therapy
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