Apparatus and Method For Correlating First and Second 3D Images of Tubular Object
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Abstract
A computer tomography (CT) imaging apparatus (2) for correlating images of the colon in prone and supine positions is disclosed. The apparatus comprises pairs of x-ray sources (6) and detectors (8) for generating 3 D image data representing at least one first location on the colon wall in the prone or supine position, and for generating 3 D image data representing a plurality of locations along the teniae coli extending along the colon wall in that position. The sources and detectors also generate 3 D image data representing the same locations along the teniae coli in the other of the prone or supine position. A computer (16) contains a processor (20) for determining a location in the second scanned image corresponding to the first location in the first scanned image.
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Citations
33 Claims
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1-26. -26. (canceled)
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27. A method of registering a first scan (S1) and a second scan (S2) of the colon taken in a prone and supine orientation, respectively, the method comprising the steps of:
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determining reference points in the first scan and in the second scan; matching the first scan reference points (MA;
MB;
MC) with the second scan reference points (MA′
;
MB′
;
MC′
); andregistering the first scan (S1) and the second scan (S2) on the basis of the matched first scan and second scan reference points. - View Dependent Claims (28, 29, 30)
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31. An apparatus for registering a first scan (S1) and a second scan (S2) of the colon taken in a prone and supine orientation, respectively, the apparatus comprising:
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a determination unit for determining reference points in the first scan and in the second scan; a match unit for matching the first scan reference points (MA;
MB;
MC) with the second scan reference points (MA′
;
MB′
;
MC′
); anda registration unit for registering the first scan (S1) and the second scan (S2) on the basis of the matched first scan and second scan reference points.
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32. A data structure for use by a computer system for registering a first scan (S1) and a second scan (S2) of the colon taken in a prone and supine orientation, respectively, the apparatus comprising:
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a first computer code for determining reference points in the first scan and in the second scan; a second computer code for matching the first scan reference points (MA;
MB;
MC) with the second scan reference points (MA′
;
MB′
;
MC′
); anda third computer code for registering the first scan (S1) and the second scan (S2) on the basis of the matched first scan and second scan reference points. - View Dependent Claims (33)
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Specification