Cohen Mervyn D
Department of Radiology, Riley Children's Hospital, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
J Am Coll Radiol. 2008 Mar;5(3):205-9. doi: 10.1016/j.jacr.2007.09.014.
Radiologists desire to keep radiation dose as low as possible. Pulsed fluoroscopy provides an opportunity to lower radiation exposure to children undergoing fluoroscopic studies. To optimize the ability of pulsed fluoroscopy to decrease radiation dose to patients during fluoroscopic studies, radiologists need to understand how pulsed fluoroscopy operates. This report reviews the basic physics knowledge needed by radiologists to best use pulsed fluoroscopy to minimize radiation dose. It explains the paradox that the best video frame-grabbed images are obtained when using the lowest fluoroscopy pulse rate and therefore the lowest fluoroscopy radiation dose.
放射科医生希望将辐射剂量尽可能降低。脉冲荧光透视法为降低接受荧光透视检查的儿童的辐射暴露提供了一个机会。为了在荧光透视检查期间优化脉冲荧光透视法降低患者辐射剂量的能力，放射科医生需要了解脉冲荧光透视法的工作原理。本报告回顾了放射科医生为最佳使用脉冲荧光透视法以尽量减少辐射剂量所需的基础物理知识。它解释了这样一个矛盾现象：当使用最低的荧光透视脉冲率从而获得最低的荧光透视辐射剂量时，能得到最佳的视频抓拍图像。
