Isometric, three-dimensional viewing of ultrasonograms
D. J. Coleman, L. Katz and F. L. Lizzi
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.
