Spatially-aware interactive segmentation of multi-energy ct data
OwnerPhilip Howard BUTLER, Anthony Philip Howard BUTLER +3inventors
InventorsPhilip Howard BUTLER, Anthony Philip Howard BUTLER, Niels J A DE RUITER, Robert LINDEMAN, Praveenkumar KANITHI
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Abstract
Segmentation of multi-energy CT data, including data in three or more energy bands. A user is enabled to input one or more region indicators in displayed CT data. Probability maps are generated and may be refined using distance metrics, which may include geodesic and Euclidean distance metrics. Segmentation may be based on the probability maps and/or refined probability maps. Segmentation of medical image data is also disclosed.
Claims40
A computer-implemented method for segmentation of multi-energy CT data, the multi-energy CT data including data in three or more energy bands, the method including:
- a) receiving in memory the multi-energy CT data;
- b) displaying the multi-energy CT data to a user;
- c) receiving user input of one or more region indicators for the displayed data;
- d) based on the region indicators, generating one or more pixel probability maps;
- and
- e) based on the one or more pixel probability maps, segmenting the multi-energy CT data.
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A computer-implemented method for segmentation of medical image data, the method including:
- a) receiving in memory the medical image data;
- b) displaying the medical image data to a user;
- c) receiving user input of one or more region indicators for the displayed data;
- d) based on the region indicators, generating one or more pixel probability maps;
- e) refining at least one of the one or more probability maps by adjusting probability values for at least some pixels based on two or more distance metrics, wherein, for a particular pixel, the two or more distance metrics are indicative of two or more distances between that particular pixel and one or more of the region indicators, and wherein the two or more distances include a Euclidean distance and a geodesic distance;
- and
- f) based on the refined pixel probability maps, segmenting the medical image data.
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A multi-energy CT system, including:
- a multi-energy CT scanner configured to scan a subject to produce multi-energy CT data including data in three or more energy bands;
- memory arranged to store the multi-energy CT data;
- a display arranged to display the multi-energy CT data to a user;
- a user input device arranged for user input of one or more region indicators for the displayed data;
- and
- a processor arranged to:
- a) based on the region indicators, generate one or more pixel probability maps;
- b) based on the one or more pixel probability maps, segment the multi-energy CT data.
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Dependencies are inferred from the claim text.