Method and system of affine registration of inter-operative two dimensional images and pre-operative three dimensional images
First Claim
1. A method for registering a sequence of inter-operative two dimensional (2D) medical images of a target feature with pre-operative three dimensional (3D) medical images of the target feature comprising the steps of:
- converting the 3D image of the target feature to a first skeletal graph;
converting the 2D image of the target feature to a second skeletal graph;
performing graph matching of the first and second skeletal graph to obtain a rough alignment of the graphs; and
registering the first and second skeletal graph.
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Abstract
A system and method for registering a sequence of inter-operative two dimensional (2D) medical images of a target feature with pre-operative three dimensional (3D) medical images of the target feature is disclosed. The 3D image of the target feature is converted to a first skeletal graph. The 2D image of the target feature is converted to a second skeletal graph. Graph matching of the first and second skeletal graphs is performed to obtain a rough alignment of the graphs, and the first and second skeletal graph registered.
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Citations
26 Claims
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1. A method for registering a sequence of inter-operative two dimensional (2D) medical images of a target feature with pre-operative three dimensional (3D) medical images of the target feature comprising the steps of:
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converting the 3D image of the target feature to a first skeletal graph;
converting the 2D image of the target feature to a second skeletal graph;
performing graph matching of the first and second skeletal graph to obtain a rough alignment of the graphs; and
registering the first and second skeletal graph. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for registering a sequence of inter-operative two dimensional (2D) images of a target feature with pre-operative three dimensional (3D) images of the target feature, the system comprising:
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a 2D imaging system for imaging a target feature;
a database for storing 3D images of the target feature;
a processor for receiving and processing the 2D images, the processor performing the following steps;
i). converting the 3D image of the target feature to a first skeletal graph;
ii). converting the 2D image of the target feature to a second skeletal graph;
iii). performing graph matching of the first and second skeletal graph to obtain a rough alignment of the graphs; and
iv). registering the first and second skeletal graph; and
a display for displaying the registered images. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification