Coleman D J, Katz L, Lizzi F L
Arch Ophthalmol. 1975 Dec;93(12):1362-5. doi: 10.1001/archopht.1975.01010020984009.
This report describes a system that allows amplitude information to be used as a third dimension or aspect of display on B-scan ultrasonograms. The relative strength of reflected echoes can be shown on B-scan by means of gray scale, color coding, or on A-scan with amplitude deflection. With this new technique, called isometric display, superimposition of the A-scan trace on the B-scan allows preservation of these amplitude characteristics. The three-dimensional presentation can be rotated around any azimuth to provide isometric viewing of the ultrasonogram. Tissue may then be characterized on a more reliable basis than is permitted by independent analysis of outline and amplitude features.
本报告描述了一种系统，该系统允许将振幅信息用作B型超声扫描图显示的第三个维度或方面。反射回波的相对强度可以通过灰度、颜色编码在B型扫描中显示，或者通过振幅偏转在A型扫描中显示。借助这种称为等距显示的新技术，将A型扫描轨迹叠加在B型扫描上可保留这些振幅特征。三维图像可以绕任何方位旋转，以便对等距超声扫描图进行观察。这样，就可以在比单独分析轮廓和振幅特征更可靠的基础上对组织进行特征描述。
