Xu Tong, Le Huy Quang, Molloi Sabee
Department of Radiological Sciences, University of California, Medical Sciences I, B-140, Irvine, CA 92697, USA.
Radiology. 2003 Feb;226(2):585-92. doi: 10.1148/radiol.2262011812.
A region-of-interest (ROI) fluoroscopy device that provides an automatically generated ROI filter with an arbitrary shape, as well as digitally compensated images, was built and evaluated. ROI filters were generated by using a deformable attenuation material. Images were compensated by using a compensation ratio and a running average interpolation method. Image compensation parameters were predicted on the basis of the x-ray tube potential used. The image quality with and without an ROI filter was evaluated. This ROI fluoroscopic technique was shown to substantially reduce patient and operator radiation exposure without degrading image quality within the ROI.
构建并评估了一种感兴趣区域（ROI）荧光透视设备，该设备可提供具有任意形状的自动生成的ROI滤波器以及数字补偿图像。ROI滤波器通过使用可变形衰减材料生成。图像通过使用补偿率和移动平均插值方法进行补偿。根据所使用的X射线管电势预测图像补偿参数。评估了有无ROI滤波器时的图像质量。结果表明，这种ROI荧光透视技术可在不降低ROI内图像质量的情况下，大幅降低患者和操作人员的辐射暴露。
