…Recently, X-ray computed tomography (X-ray CT) technology, which uses a computer to reconstruct images, has made great strides and is becoming increasingly widespread. In addition to X-rays, there are also proton beam CT, which uses protons from an accelerator, and emission CT and positron CT, which measure the gamma rays emitted by concentrating labeled compounds of nuclides that emit gamma rays or positrons on a target area (CT examination). Radiation exposure is used not only for diagnosis but also for treatment. … *Some of the terminology that refers to "emission CT" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…最近ではコンピューターで画像の再構成処理をするX線コンピューター断層撮影(X線CT)技術が進歩し,普及が著しい。X線のみでなく,加速器からの陽子(プロトン)を使用するプロトンビームCT,γ線や陽電子を放射する核種の標識化合物を対象とする局部に集中させ,放出されるγ線を計測するエミッションCTやポジトロンCTもある(CT検査)。 放射線照射は診断のみでなく治療にも使われている。… ※「エミッション CT」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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