Robillard P, Roy P, Galand C, Sylvestre J
J Can Assoc Radiol. 1983 Jun;34(2):95-8.
Digital angiography depends upon computer recording and manipulation of the radiographic image rather than the use of film. We use a small focal spot x-ray tube, a cesium iodide image intensifier and the image is recorded on a 512 X 512 matrix at 1.2 frames per second. Subtraction angiograms have been obtained in 250 patients and 86% of the results were graded as either good or excellent in head and neck examinations. There is however a small proportion of patients in whom results are unsatisfactory and in whom this fact can be attributed most often to cardiac failure. The advantages of digital intravenous and intra-arterial subtraction angiography have been evaluated and amount to improved patient safety, high system contrast and favourable cost effectiveness; these outweigh the limitations of the restricted field of view and the relatively low resolution of the image in comparison with conventional arteriography.
数字血管造影依赖于计算机对射线图像的记录和处理，而非使用胶片。我们使用一个小焦点X射线管、一个碘化铯图像增强器，图像以每秒1.2帧的速度记录在512×512矩阵上。已对250例患者进行了减影血管造影，在头颈部检查中，86%的结果被评为良好或优秀。然而，有一小部分患者的结果不尽人意，这一情况最常归因于心力衰竭。已对数字静脉和动脉内减影血管造影的优势进行了评估，其优势包括提高患者安全性、高系统对比度和良好的成本效益；与传统动脉造影相比，这些优势超过了视野受限和图像分辨率相对较低的局限性。
