Rudin S, Bednarek D R, Kezerashvili M, Granger W E, Serghany J E, Guterman L R, Hopkins L N, Szymanski B, Loftus R J
Departments of Biophysical Sciences, School of Medicine and Biomedical Sciences, State University of New York, Buffalo, USA.
Radiographics. 1996 Jul;16(4):895-902. doi: 10.1148/radiographics.16.4.8835978.
In region-of-interest (ROI) imaging, a filter with a central aperture is used to substantially reduce patient dose outside of an ROI while maintaining or improving image quality within the ROI. The benefits of ROI imaging can be realized by using standard imaging equipment. ROI imaging has been clinically applied to gastrointestinal radiology and interventional procedures. In gastrointestinal procedures, ROI fluoroscopy without image processing can be used without adversely affecting the procedure or interfering with spot radiography. ROI fluoroscopy can reduce the dose-area product by a factor of 1.7 for gastrointestinal procedures. In interventional neuroradiologic procedures, equalized display brightness is achieved with road mapping during fluoroscopy and with standard digital subtraction techniques during angiography. In interventional radiology, ROI filters can generally reduce the patient skin dose to levels below the threshold for skin effects, thus eliminating these effects across more than 85% of the field of view.
在感兴趣区域（ROI）成像中，使用带有中心孔径的滤光器可在保持或提高ROI内图像质量的同时，大幅降低ROI外的患者剂量。通过使用标准成像设备可实现ROI成像的益处。ROI成像已在临床应用于胃肠放射学和介入程序。在胃肠程序中，无需图像处理的ROI荧光透视可在不影响程序或干扰点片摄影的情况下使用。对于胃肠程序，ROI荧光透视可将剂量面积乘积降低1.7倍。在介入神经放射学程序中，透视期间通过路径图以及血管造影期间通过标准数字减法技术可实现均衡的显示亮度。在介入放射学中，ROI滤光器通常可将患者皮肤剂量降低至低于皮肤效应阈值的水平，从而在超过85%的视野范围内消除这些效应。
