Sanada Shigeru
Graduate School of Health Sciences, Kanazawa University, Kanazawa, Japan.
Quant Imaging Med Surg. 2017 Dec;7(6):698-706. doi: 10.21037/qims.2017.12.01.
We developed a functional digital radiography system that provides physiological and functional information of the chest and/or joints using an X-ray flat-panel detector (FPD) system. During chest examination, sequential chest radiographs are taken from inspiration to expiration in order to analyze diaphragmatic movements. Pixel value changes in localized areas of the lung are then assessed to analyze ventilation and circulation. For limb joints, such as the wrist, shoulder, and knee, sequential radiographs during flexion and extension or rotational movement are considered, and movement angles are analyzed. These imaging techniques and quantitative analyses are promising in screening examinations because they provide physiological and functional information. The entrance surface dose for the detector is approximately 1.9 mGy for chest examination, which is comparable to the dose limit recommended by the International Atomic Energy Agency. Recent related studies are reviewed in this paper.
我们开发了一种功能性数字放射成像系统，该系统使用X射线平板探测器（FPD）系统提供胸部和/或关节的生理及功能信息。在胸部检查期间，从吸气到呼气进行连续的胸部X光片拍摄，以分析膈肌运动。然后评估肺部局部区域的像素值变化，以分析通气和循环情况。对于诸如手腕、肩部和膝盖等四肢关节，考虑在屈伸或旋转运动期间进行连续的X光片拍摄，并分析运动角度。这些成像技术和定量分析在筛查检查中很有前景，因为它们能提供生理和功能信息。胸部检查时探测器的体表入射剂量约为1.9毫戈瑞，这与国际原子能机构推荐的剂量限值相当。本文对近期的相关研究进行了综述。
