...Refers to RI images in nuclear medicine tests (RI is an abbreviation for radioisotope), which are images of the distribution and changes in radiation (mainly gamma rays) emitted from the body after a radiopharmaceutical is administered to a patient. This scintigram shows the location, size, and shape of various organs or tumors, and the time course of RI accumulation can reveal bodily functions. *Some of the terminology that refers to "RI images" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…核医学検査におけるRI画像をいい(RIは放射性同位体,ラジオアイソトープの略称),放射性医薬品を患者に投与後,体内から出る放射線(おもにγ線)の体内分布状態や変化量を測定し,画像として表現したもの。このシンチグラムによって,各種臓器,または腫瘍の位置,大きさ,形などがわかり,RI集積の時間的推移からは身体の機能を知ることができる。… ※「RI 画像」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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