Method for matching and registering medical image data
First Claim
1. A method for matching and registering medical image data, comprising the steps of:
- (a) obtaining a first image data set of a tubular structure;
(b) obtaining a second image data set of said tubular structure;
(c) determining a first path of said tubular structure in said first image;
(d) determining a second path of said tubular structure in said second image;
(e) determining landmarks in said first path;
(f) determining landmarks in said second path;
(g) matching said landmarks in said first path with said landmarks in said second path through identifying correspondence between said landmarks of said first path with said landmarks of said second path; and
(h) registering said first path to said second path through stretching or shrinking of said first path to said second path until said corresponding landmarks in said first path and said second path coincide along said respective paths.
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Accused Products
Abstract
An automatic method for the registration of prone and supine computed tomographic colonography data is provided. The method improves the radiologist'"'"'s overall interpretation efficiency as well as provides a basis for combining supine/prone computer-aided detection results automatically. The method includes determining (centralized) paths or axes of the colon from which relatively stationary points of the colon are matched for both supine and prone positions. Stretching and/or shrinking of either the supine or prone path perform registration of these points. The matching and registration occurs in an iterative and recursive manner and is considered finished based on one or more decision criteria.
35 Citations
13 Claims
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1. A method for matching and registering medical image data, comprising the steps of:
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(a) obtaining a first image data set of a tubular structure; (b) obtaining a second image data set of said tubular structure; (c) determining a first path of said tubular structure in said first image; (d) determining a second path of said tubular structure in said second image; (e) determining landmarks in said first path; (f) determining landmarks in said second path; (g) matching said landmarks in said first path with said landmarks in said second path through identifying correspondence between said landmarks of said first path with said landmarks of said second path; and (h) registering said first path to said second path through stretching or shrinking of said first path to said second path until said corresponding landmarks in said first path and said second path coincide along said respective paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for registering computed tomography colonography data obtained in a supine position and in a prone position, comprising the steps of:
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(a) obtaining said computed tomography colonography data in said supine position; (b) obtaining said computed tomography colonography data in said prone position; (c) determining a first path in said computed tomography colonography data of said colon in said supine position; (d) determining a second path in said computed tomography colonography data of said colon in said prone position; (e) determining landmarks in said first path; (f) determining landmarks in said second path; and (g) matching said landmarks in said first path with said landmarks in said second path through identifying correspondence between said landmarks of said first path with said landmarks of said second path; and (h) registering said first path to said second path through stretching or shrinking of said first path to said second path until said corresponding landmarks in said first path and said second path coincide along said respective paths, or registering said first path to said second path through stretching or shrinking of said second path to said first path until said corresponding landmarks in said first path and said second path coincide along said respective paths. - View Dependent Claims (10, 11, 12, 13)
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Specification