Sommer F G, Brody W R, Gross D, Macovski A
AJR Am J Roentgenol. 1982 Feb;138(2):317-22. doi: 10.2214/ajr.138.2.317.
Applications of dual energy radiography to renal imaging were evaluated using an experimental system for line-scanned projection radiography. This system combines digital radiographs simultaneously obtained at two differing x-ray energies (85 and 135 kVp) to create images in which materials of a desired mean atomic number are selectively cancelled. A preliminary evaluation of the technique was performed for three renal imaging problems: detection and characterization of renal masses of low radiographic contrast, evaluation of renal artery stenosis and unilateral renal ischemia, and detection of renal calculi. In all three applications, the dual energy technique produced results indicating potential advantages over conventional radiographic studies.
使用线扫描投影射线照相实验系统评估了双能射线照相在肾脏成像中的应用。该系统结合了在两种不同X射线能量（85和135 kVp）下同时获得的数字射线照片，以创建图像，其中具有所需平均原子序数的材料被选择性消除。针对三个肾脏成像问题对该技术进行了初步评估：低射线照相对比度的肾脏肿块的检测和特征描述、肾动脉狭窄和单侧肾缺血的评估以及肾结石的检测。在所有这三种应用中，双能技术产生的结果表明其相对于传统射线照相研究具有潜在优势。
