Computed Tomography Dose Index Volume

**Semantic type:** Quantitative Concept

**Definition:** The International Electrotechnical Commission preferred expression of radiation dose in computed tomography (CT) dosimetry. It is calculated by averaging the radiation dose delivered over x,y and z directions and expressed in the SI unit of Gray (Gy).

**Synonyms:** - COMPUTED_VOLUME - COMPUTED_VOLUME - CTDIvol - ctdiVol