Ovitt T W, Christenson P C, Fisher H D, Frost M M, Nudelman S, Roehrig H, Seeley G
AJR Am J Roentgenol. 1980 Dec;135(6):1141-4. doi: 10.2214/ajr.135.6.1141.
An x-ray imaging system, using digital subtraction techniques, has been developed. The system requires: (1) high output generation equipment; (2) an image intensifier capable of receiving high output exposures, 1 mR (2.58 X 10(-7) C/kg) at the face of the intensifier, without loss of either contrast or resolution; (3) a precision digital video camera; (4) processing computer with sufficient storage capacity; and (5) digital image storage. With this system it is possible to visualize the major arteries after intravenous contrast injection. The system, angiography technique, and early results are described.
一种采用数字减法技术的X射线成像系统已被开发出来。该系统需要：（1）高输出量的发生设备；（2）一种能够接收高输出量曝光的影像增强器，在增强器表面为1毫伦琴（2.58×10⁻⁷库仑/千克），且不会损失对比度或分辨率；（3）一台精密数字摄像机；（4）具有足够存储容量的处理计算机；以及（5）数字图像存储。使用该系统可以在静脉注射造影剂后使主要动脉显影。本文描述了该系统、血管造影技术及早期结果。
