Kubo Takeshi, Ohno Yoshiharu, Seo Joon Beom, Yamashiro Tsuneo, Kalender Willi A, Lee Chang Hyun, Lynch David A, Kauczor Hans-Ulrich, Hatabu Hiroto
Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan.
Division of Functional and Diagnostic Imaging Research, Department of Radiology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Advanced Biomedical Imaging Research Center, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
Eur J Radiol. 2017 Jan;86:313-319. doi: 10.1016/j.ejrad.2016.10.012. Epub 2016 Oct 13.
The increase in the radiation exposure from CT examinations prompted the investigation on the various dose-reduction techniques. Significant dose reduction has been achieved and the level of radiation exposure of thoracic CT is expected to reach the level equivalent to several chest X-ray examinations. With more scanners with advanced dose reduction capability deployed, knowledge on the radiation dose reduction methods has become essential to clinical practice as well as academic research. This article reviews the history of dose reduction techniques, ongoing changes brought by newer technologies and areas of further investigation.
CT检查辐射暴露的增加促使人们对各种剂量降低技术进行研究。现已实现显著的剂量降低，胸部CT的辐射暴露水平有望达到相当于几次胸部X光检查的水平。随着更多具备先进剂量降低能力的扫描仪投入使用，关于辐射剂量降低方法的知识对于临床实践和学术研究都变得至关重要。本文回顾了剂量降低技术的历史、新技术带来的持续变化以及进一步研究的领域。
