Method for localization of a biopsy needle or similar surgical tool in a radiographic image
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United States of America Patent
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Apr 25, 2000
Grant Date -
N/A
app pub date -
Sep 22, 1997
filing date -
Sep 22, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A method for detection and localization of a surgical device in a radiographic image of the surgical device, includes the steps of: generating a radiographic image, including an image of a surgical device and an anatomical background image; moving the device rotatably through a plurality of positions corresponding to steps of an alignment method; generating a plurality of radiographic images corresponding to the plurality of positions, respectively; subtracting each image of the plurality of images from preceding images so as to generate a plurality of difference images; deriving the mathematical intersection of all of the plurality of difference images; and thereby obtaining a resulting image containing only an image of the device on the radiographic image without the anatomical background image.
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