Tsuda Norisato, Tanaka Nobukazu, Akasaka Tsutomu, Yabuuchi Hidetake, Morishita Junji
Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan,
Radiol Phys Technol. 2014 Jul;7(2):310-5. doi: 10.1007/s12194-014-0268-z. Epub 2014 May 21.
Our purpose in this study was to evaluate the potential of dose reduction in general radiography for adult patients by use of a dual-side-reading (DSR) photostimulable phosphor plate in a computed radiography system. The image quality and low-contrast detectability in terms of the contrast-detail diagram of the DSR system with use of the X-ray beam quality of the RQA 5 defined by the International Electrotechnical Commission 61267 were compared with those of a conventional single-side-reading (SSR) system. The radiographic noise of the DSR system was lower compared to that of the SSR system under the same exposure conditions. Although there were no statistical differences in low-contrast detectabilities between the SSR system and the DSR system under the same exposure levels, the DSR system showed superior detectability compared to the SSR system. We conclude that the DSR system for general radiography has the potential to reduce the patient dose.
本研究的目的是评估在计算机X线摄影系统中使用双侧阅读（DSR）光激励荧光板降低成年患者普通X线摄影剂量的潜力。将使用国际电工委员会61267定义的RQA 5 X射线束质的DSR系统在对比度细节图方面的图像质量和低对比度可探测性与传统单侧阅读（SSR）系统进行比较。在相同曝光条件下，DSR系统的X线摄影噪声低于SSR系统。虽然在相同曝光水平下，SSR系统和DSR系统在低对比度可探测性方面无统计学差异，但DSR系统的可探测性优于SSR系统。我们得出结论，用于普通X线摄影的DSR系统有降低患者剂量的潜力。
