DESCRIPTION AND EVALUATION OF A SYSTEM FOR HIGH-SPEED, THREE-DIMENSIONAL COMPUTED TOMOGRAPHY OF THE BODY: THE DYNAMIC SPATIAL RECONSTRUCTOR.

The SSDSR and DSR are the first known CT scanners to provide simultaneous scanning of up to 240 cross sections, that is, synchronous volume scanning. Consequently, the full three-dimensional extent of relatively large organs such as the heart can be captured in one scan procedure and stored in computer memory. The reconstructed 3-D image can then be mathematically (i. e. , non-destructively) sectioned at any angle and displayed as multi-oriented slices through the anatomic volume. New radiographic images (reprojections) of the total volume scanned, or any desired subregion of the total volume scanned, can be formed without additional X-ray exposure, and displayed from any orientation with superimposed structures removed. Shaded surface displays of selected organs and true 3-D volume displays which permit operator interaction are also possible.