Roucayrol J C
Nouv Presse Med. 1981 Nov 14;10(41):3371-4.
It is now possible to obtain clear images of the various planes in and around a structure with ultrasounds (echotomography), X-rays (computerized tomography) and recently, gamma-rays from radioactive substances (emission tomography). Axial transverse tomography, which is described here, is to conventional scintigraphy what CT scan is to radiography. It provides images of any structure capable of concentrating sufficiently a radioactive substance administered intravenously. These images are perpendicular to the longitudinal axis of the body. As shown by examples in the liver, lungs and myocardium, lesions which had passed unnoticed with other exploratory techniques can now be demonstrated, and the location, shape and extension of known lesions can be more accurately assessed. Emission tomography already has its place in modern diagnostic procedures side by side with echotomography and CT scan.
现在可以通过超声（超声断层扫描）、X射线（计算机断层扫描）以及最近利用放射性物质发出的伽马射线（发射断层扫描）获得某一结构及其周围各个平面的清晰图像。这里所描述的轴向横断层扫描对于传统闪烁扫描法而言，就如同CT扫描对于放射照相术一样。它能提供任何能够充分浓聚静脉注射放射性物质的结构的图像。这些图像与身体的纵轴垂直。如肝脏、肺部和心肌的实例所示，那些用其他探测技术未能发现的病变现在能够显示出来，而且已知病变的位置、形状和范围能够得到更准确的评估。发射断层扫描已经与超声断层扫描和CT扫描一起在现代诊断程序中占有一席之地。
