Method and appartus for calculating distance between ultrasound images using sum of absolute differences
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United States of America Patent
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Aug 22, 2000
Issued Date -
N/A
app pub date -
Apr 23, 1999
filing date -
Mar 20, 1998
priority date (Note) -
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Abstract
A method and apparatus for calculating the inter-slice spacing in a data volume and registering the slices of that volume using SAD calculations. The resulting transformed data volume is then three-dimensionally reconstructed using a projection technique. If during scanning the probe is translated in the Z direction and at the same time is shifted in the X and/or Y direction, the SAD value will be artificially high. By translating two adjacent images with respect to each other in the X direction and then in the Y direction, and searching for the minimum SAD value, the amount of shift in the X and/or Y direction can be determined and that shift can then be removed. Also by rotating two slices with respect to each other and looking for a minimum SAD value, rotational motion of the probe during scanning can be removed.
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Family
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