ICRU
Pronunciation: EYE-see-are-you
Also written as: ICRU — International Commission on Radiation Units and Measurements
International Commission on Radiation Units and Measurements, the organization that establishes standards for radiation dose reporting and measurement.
Full Definition
The International Commission on Radiation Units and Measurements (ICRU) is the international body responsible for developing recommendations and standards for radiation quantities, units, terminology, and measurement procedures. Established in 1925, ICRU publishes reports that form the foundation for radiation oncology practice, including definitions of target volumes (GTV, CTV, PTV), dose specification points, and reporting requirements. ICRU Report 50 and subsequent reports have standardized how radiation oncologists define, delineate, and report treatment volumes and doses, ensuring consistency in clinical practice worldwide.
Usage
Usage note: Always written in all capitals; frequently referenced in dose prescription and reporting protocols.
In Context
- "The target volume delineation followed ICRU Report 83 guidelines for image-guided radiotherapy." — Treatment planning protocol
- "ICRU recommendations ensure standardized dose reporting across international radiation oncology centers." — Quality assurance document