DOSIMETER

摘要

Provided is a dosimeter that, with minimal impact on images taken or displayed using radiation, can measure radiation doses in real-time while said images are being taken or displayed and is environmentally safe. This dosimeter is provided with the following: a radiation detection unit (100) that has a Y2O2S-based phosphor (120) containing at least one activator, namely europium; an optical fiber (200) that transmits light that the phosphor (120) in the radiation detection unit (100) emits upon receiving radiation; and a light-detecting unit (310) that detects the light transmitted by the optical fiber (200).