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Medical Term:

critical organ


the organ or physiologic system that for a given source of radiation would first reach its legally defined maximum permissible radiation exposure as the dose of radiation is increased; the kidney is the critical organ, receiving the most radiation, when Tc-99m dimethylsuccinic acid is given.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.