DETERMINING POSITION OF MEDICAL DEVICE IN BRANCHED ANATOMICAL STRUCTURE
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United States of America Patent
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Jun 26, 2014
app pub date -
Oct 8, 2013
filing date -
Oct 12, 2012
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Abstract
Information extracted from sequential images captured from the perspective of a distal end of a medical device moving through an anatomical structure are compared with corresponding information extracted from a computer model of the anatomical structure. A most likely match between the information extracted from the sequential images and the corresponding information extracted from the computer model is then determined using probabilities associated with a set of potential matches so as to register the computer model of the anatomical structure to the medical device and thereby determine the lumen of the anatomical structure which the medical device is currently in. Sensor information may be used to limit the set of potential matches. Feature attributes associated with the sequence of images and the set of potential matches may be quantitatively compared as part of the determination of the most likely match.
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