Method and system for characterization of knee joint morphology
AssigneeImage Metrics Limited
InventorsKevin Walker, Jane Haslam, Anthony Holmes
Life of this patent
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Abstract
A method and system for characterizing a knee joint in terms of its skeletal morphology. A plurality of loci associated with a model of skeletal structure of a knee joint are fitted and used to parameterize positions of the plurality of loci in a given subject and, thereby, to derive parameters of a deformable statistical template. The skeletal morphology is then characterized on the basis of the derived parameters of the deformable statistical template.
Claims13
A method for characterizing a knee joint in terms of a model parameterization, the method comprising:
- a. creating a deformable statistical template characterized by a set of parameters that, as a set, span an abstract vector space representing the set of spatial positions of specified features of the knee joint, each vector uniquely describing its variation from a population mean;
- b. fitting at runtime, in a two-dimensional image of the skeleture of a knee, a plurality of loci associated with specified features to allow parameterization in terms of a deformable statistical template;
- c. parameterizing positions of the plurality of loci in a given subject to derive values for parameters of the deformable statistical template;
- and
- d. characterizing the skeletal morphology of the knee of the given subject on the basis of either a subset of the plurality of loci, and/or the derived parameters of the deformable statistical template.
A method for characterizing a knee joint in terms of its skeletal morphology, the method comprising:
- a. fitting, at runtime, in a two-dimensional image of the skeleture of a knee, a plurality of loci associated with specified features to allow parameterization of a deformable statistical template;
- b. parameterizing positions of the plurality of loci in a given subject to derive parameters of the deformable statistical template;
- and
- c. characterizing the skeletal morphology on the basis of either a subset of the plurality of loci, and/or the derived parameters of the deformable statistical template.
A computer program product for use on a computer system for characterizing the skeletal morphology of a knee joint of a subject, the program product comprising:
- a. program code for storing loci associated with specified skeletal features in a two-dimensional image of a knee joint into a computer memory;
- b. program code for parameterizing positions of the plurality of loci in a given subject to derive parameters of a deformable statistical template;
- and
- c. program code for characterizing the skeletal morphology on the basis of either a subset of the plurality of loci, and/or the derived parameters of the deformable statistical template.
Dependencies are inferred from the claim text.