Three-dimensional colour Doppler imaging.
We have developed a system to acquire in vivo three-dimensional (3D) colour velocity images of peripheral vasculature. A clinical ultrasound system was modified by mounting the transducer on a motor-driven translation stage, allowing planar ultrasound images to be acquired along a 37 mm long stroke. A 3D velocity image is acquired by digitizing, in synchrony with the cardiac cycle, successive video images as the transducer is moved over the skin surface. 3D images require about 1 min to acquire and 10 min to reconstruct before being viewed interactively. Image acquisition at several points in the cardiac cycle permits a cine-type reconstructed image. Geometrical, temporal and velocity accuracy of the acquisition and reconstruction have been quantified and found not to degrade the image.
Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Canada.
P A
PA
Picot
D W
DW
Rickey
R
R
Mitchell
R N
RN
Rankin
A
A
Fenster
D000328:Adult; D001783:Blood Flow Velocity; D002339:Carotid Arteries / Q000000981:diagnostic imaging* / Q000502:physiology; D003116:Color; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007601:Jugular Veins / Q000000981:diagnostic imaging* / Q000502:physiology; D008961:Models, Structural; D012680:Sensitivity and Specificity; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods