DETERMINING POSITION OF MEDICAL DEVICE IN BRANCHED ANATOMICAL STRUCTURE
First Claim
1. A medical system comprising:
- a memory storing information of a computer model of a branched anatomical structure; and
a processor programmed to register the computer model to a medical device for determining a position of the medical device in the branched anatomical structure by determining a most likely match between information which has been extracted from a sequence of images that has been captured by an image capturing device from a perspective of a distal end of the medical device while moving through a path including a plurality of lumens in the branched anatomical structure and corresponding information that has been extracted from the computer model of the branched anatomical structure.
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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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Citations
29 Claims
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1. A medical system comprising:
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a memory storing information of a computer model of a branched anatomical structure; and a processor programmed to register the computer model to a medical device for determining a position of the medical device in the branched anatomical structure by determining a most likely match between information which has been extracted from a sequence of images that has been captured by an image capturing device from a perspective of a distal end of the medical device while moving through a path including a plurality of lumens in the branched anatomical structure and corresponding information that has been extracted from the computer model of the branched anatomical structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for determining a position of the medical device in the branched anatomical structure, the method comprising:
determining a most likely match between information that has been extracted from a sequence of images that have been captured from a perspective of a distal end of a medical device as the medical device moves through a path including a plurality of lumens in the branched anatomical structure and corresponding information that has been extracted from the computer model of the branched anatomical structure. - View Dependent Claims (27, 28, 29)
Specification