System and Method for Detecting Spherical and Ellipsoidal Objects Using Cutting Planes
First Claim
1. A method for detecting spherical and ellipsoidal objects is digitized medical images comprising the steps of:
- providing a 2-dimensional (2D) slice I(x, y) extracted from a medical image volume of a colon, said image volume comprising a plurality of intensities associated with a 3D grid of points;
separating the colon from other structures in the slice by analyzing partial volume artifacts; and
finding a target structure in said slice.
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Abstract
A method for detecting spherical and ellipsoidal objects is digitized medical images includes providing a 2-dimensional (2D) slice I(x, y) extracted from a medical image volume of a colon, said image volume comprising a plurality of intensities associated with a 3 grid of points, generating a plurality of templates of different sizes whose shape matches a target structure being sought in said slice, calculating a normalized gradient from said slice, calculating a diverging field gradient response (DFGR) for each of the plurality of masks with the normalized gradient, and selecting a strongest response as being indicative of the position and size of the target structure.
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Citations
22 Claims
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1. A method for detecting spherical and ellipsoidal objects is digitized medical images comprising the steps of:
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providing a 2-dimensional (2D) slice I(x, y) extracted from a medical image volume of a colon, said image volume comprising a plurality of intensities associated with a 3D grid of points; separating the colon from other structures in the slice by analyzing partial volume artifacts; and finding a target structure in said slice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A program storage device readable by a computer, tangibly embodying a program of instructions executable by the computer to perform the method steps for detecting spherical and ellipsoidal objects is digitized medical images, said method comprising the steps of:
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providing a 2-dimensional (2D) slice I(x, y) extracted from a medical image volume of a colon, said image volume comprising a plurality of intensities associated with a 3D grid of points; separating the colon from other structures in the slice by analyzing partial volume artifacts; and finding a target structure in said slice. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for detecting spherical and ellipsoidal objects is digitized medical images comprising the steps of:
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providing a 2-dimensional (2D) slice I(x, y) extracted from a medical image volume of a colon, said image volume comprising a plurality of intensities associated with a 3D grid of points; generating a plurality of templates of different sizes whose shape matches a target structure being sought in said slice; calculating a normalized gradient from said slice; calculating a diverging field gradient response (DFGR) for each of the plurality of masks with the normalized gradient; and selecting a strongest response as being indicative of the position and size of the target structure. - View Dependent Claims (22)
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Specification