Surgery – Ultrasound 3-d imaging
Patent
1998-03-20
2000-01-11
Lateef, Marvin M.
Surgery
Ultrasound 3-d imaging
600437, A61B 800
Patent
active
06012458&
ABSTRACT:
A method and an apparatus for tracking scan plane motion in free-hand three-dimensional ultrasound scanning using adaptive speckle correlation. The method employs a correlation index which adapts to different display dynamic range and post-processing filters. The method may include the following steps: choosing a kernel within each frame image for correlation calculations; rejecting duplicate image frames; measuring the degree of correlation between successive image frames; rejecting correlation estimates which may be associated with hand jitter and other artifacts; and computing the average frame-to-frame (i.e., interslice) spacing based on the average correlation estimate. This image-based motion tracking technique enables three-dimensional reconstruction with good geometric fidelity, without use of any external position-sensing device.
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Hatfield William Thomas
Miller Steven C.
Mo Larry Y. L.
Cabou Christian G.
Flaherty Dennis M.
Imam Ali M.
Lateef Marvin M.
Price Phyllis Y.
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