Barnes G T
Department of Radiology, University of Alabama Hospitals and Clinics, University of Alabama, Birmingham 35233.
Radiographics. 1991 Mar;11(2):307-23. doi: 10.1148/radiographics.11.2.2028065.
The effect of scattered radiation on x-ray image contrast is reviewed. Without scatter control, the information content of x-ray images is severely compromised. Typical grid performance in general radiography and mammography and grid selection considerations are presented. Contrast can be significantly improved and patient dose reduced if more efficient methods of scatter control can be developed. This can be accomplished in chest radiography with scanning slit and improved grid techniques, in mammography with multiple scanning slit techniques, and in abdominal radiography with scanning grid techniques.
本文综述了散射线对X射线图像对比度的影响。若不进行散射控制，X射线图像的信息含量将严重受损。文中介绍了普通放射摄影和乳腺摄影中典型的滤线栅性能以及滤线栅的选择考量因素。如果能开发出更有效的散射控制方法，对比度可显著提高，患者剂量也可降低。这在胸部摄影中可通过扫描缝隙和改进的滤线栅技术实现，在乳腺摄影中可通过多重扫描缝隙技术实现，在腹部摄影中可通过扫描滤线栅技术实现。
