Pseudocolor B-mode arterial images to quantify-echogenicity of atherosclerotic plaque.
Based on the differences between tissue impedances in atherosclerotic plaques and on the scattering of ultrasound from blood, colors were assigned to the echo strength scale, replacing the usual gray scale in 2-D B-mode ultrasound images. Using a "green tag" indicating -55 dB to mark blood, other echo strength values from atherosclerotic plaque were assigned specific colors, creating a B-mode color ultrasound display that highlights selected echogenicities. The color scale permits the use of a wider dynamic range in the B-mode image, and allows the instrument gains to be set reproducibly.
Beach
K W
KW
Department of Surgery, University of Washington, Seattle 98195.
Primozich
J F
JF
Strandness
D E
DE
D001158:Arteries / Q000000981:diagnostic imaging*; D001161:Arteriosclerosis / Q000000981:diagnostic imaging*; D001783:Blood Flow Velocity; D006801:Humans; D014463:Ultrasonography / Q000379:methods*