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Journal of Ultrasound in Medicine, Vol 9, Issue 9 525-532, Copyright © 1990 by American Institute of Ultrasound in Medicine
Three-dimensional spatial registration and interactive display of position and orientation of real-time ultrasound images
D. L. King, D. L. King Jr and M. Y. Shao
Columbia University College of Physicians and Surgeons, New York, New York 10032.
Ultrasound images may be difficult to interpret because of the lack of an
image orientation display. To resolve this problem, a three-dimensional
(3-D) ultrasound scanner has been constructed that provides spatial
registration and display of position and orientation of real-time images
while allowing unconstrained movement of the scanning transducer. It
consists of a conventional sector scanner, a 3-D acoustical spatial
locater, and a personal computer. It displays within each image the line of
intersection of two image planes, a reference image, and a live image. This
display guides and documents image positioning. The scanner's 3-D data also
provide the potential for computergraphic modeling of organs, the ability
to calculate volumes using nonparallel, nonintersecting image planes, and
the capability for 3-D color flow mapping and measurement of Doppler angle.
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