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US 2019/0172210 A1Published application
Automatic quality checks for radiotherapy contouring
AssigneeVarian Medical Systems International AG
InventorsThomas ALBRECHT, Peter HESS, Nawal HOUHOU
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Abstract
Systems, devices, methods, and computer processing products for automatically checking for errors in segmentation (contouring) using heuristic and/or statistical evaluation methods.
Claims24
1-31. (canceled)
A method for detecting a segmentation error in a segment representing a delineation of an anatomical structure of a subject on an image, comprising:
- selecting an appropriate segment evaluation method from a plurality of segment evaluation methods available to be applied on the segment, the plurality of evaluation methods including a heuristic evaluation method and a statistical evaluation method;
- and
- evaluating the segment using the selected evaluation method,
- wherein the heuristic evaluation method includes evaluating whether one or more of a set of heuristic rules are violated, and the statistical evaluation method includes evaluating whether a shape of the segment is within a predetermined range of known shapes for the segment;
- and
- providing a signal indicating that an error in the segmentation is present based on a result of the evaluating.
3 more elements
A system for detecting a segmentation error in a segment representing a delineation of an anatomical structure of a subject on an image, the system being configured to:
- select an appropriate segment evaluation method from a plurality of segment evaluation methods available to be applied on the segment, the plurality of evaluation methods including a heuristic evaluation method and a statistical evaluation method;
- evaluate the segment using the selected evaluation method, the heuristic evaluation method including evaluating whether one or more of a set of heuristic rules are violated, and the statistical evaluation method including evaluating whether a shape of the segment is within a predetermined range of known shapes for the segment;
- and
- provide a signal that an error in the segmentation is present based on a result of the evaluating.
1 more element
Dependencies are inferred from the claim text.