SYSTEM AND METHOD FOR SHAPE MEASUREMENTS ON THICK MPR IMAGES
First Claim
1. A method for measuring shapes in thick multi-planar reformatted (MPR) digital images, comprising the steps of:
- identifying a shape in a digital MPR image;
scan-converting points corresponding to the identified shape on a starting plane of an MPR slab in an image volume from which the MPR was obtained to generate a plurality of starting points for the identified shape;
calculating an end point in the MPR slab corresponding to each starting point;
propagating a ray from each starting point to each corresponding end point;
accumulating samples along each ray; and
computing a desired measurement value from the accumulated samples after reaching the end point for all rays.
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Abstract
A method for measuring shapes in thick multi-planar reformatted (MPR) digital images, including identifying a shape in a digital MPR image, scan-converting points corresponding to the identified shape on a starting plane of an MPR slab in an image volume from which the MPR was obtained to generate a plurality of starting points for the identified shape, calculating an end point in the MPR slab corresponding to each starting point, propagating a ray from each starting point to each corresponding end point, accumulating samples along each ray, and computing a desired measurement value from the accumulated samples after reaching the end point for all rays.
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Citations
22 Claims
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1. A method for measuring shapes in thick multi-planar reformatted (MPR) digital images, comprising the steps of:
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identifying a shape in a digital MPR image; scan-converting points corresponding to the identified shape on a starting plane of an MPR slab in an image volume from which the MPR was obtained to generate a plurality of starting points for the identified shape; calculating an end point in the MPR slab corresponding to each starting point; propagating a ray from each starting point to each corresponding end point; accumulating samples along each ray; and computing a desired measurement value from the accumulated samples after reaching the end point for all rays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for measuring shapes in thick multi-planar reformatted (MPR) digital images, comprising the steps of:
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identifying a shape in a digital MPR image; scan-converting points corresponding to the identified shape on a starting plane of an MPR slab in an image volume from which the MPR was obtained to generate a plurality of starting points for the identified shape; calculating an end point in the MPR slab corresponding to each starting point; propagating a ray from each starting point to each corresponding end point; accumulating samples along each ray; and saving the sample accumulated for each ray. - View Dependent Claims (12)
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13. A non-transitory program storage device readable by a computer, tangibly embodying a program of instructions executed by the computer to perform the method steps for measuring shapes in thick multi-planar reformatted (MPR) digital images, the method comprising the steps of:
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identifying a shape in a digital MPR image; scan-converting points corresponding to the identified shape on a starting plane of an MPR slab in an image volume from which the MPR was obtained to generate a plurality of starting points for the identified shape; calculating an end point in the MPR slab corresponding to each starting point; propagating a ray from each starting point to each corresponding end point; accumulating samples along each ray; and computing a desired measurement value from the accumulated samples after reaching the end point for all rays. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification