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.
Picot
P A
PA
Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Canada.
Rickey
D W
DW
Mitchell
R
R
Rankin
R N
RN
Fenster
A
A
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