A 3D display with a linearly moving mirror to reflect a series of 2D cross sections and its application to noninvasive angiography

A 3D display equipped with a linearly moving mirror reflecting a series of 2D cross sections pictures has been devised. The pictures were displayed by a CRT in perfect synchronization with the back-and-forth movements of the mirror. The 80×80×80 mm³ 3D space contained 128×128 pixels; with each pixel having 256 grades of intensity, enough to produce a satisfactory 3D image of an ultrasonic echogram of hepatic vessels. The images can be observed from different angles by changing the observer´s position or by prompt rotation of the image through a console. Mechanical problems inherent in using moving parts have been solved