METHOD AND SYSTEM FOR ANATOMY STRUCTURE SEGMENTATION AND MODELING IN AN IMAGE
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Abstract
A method is proposed for segmenting one or more ventricles in a three-dimensional brain scan image (e.g. MR or CT). The image is registered against a brain model, which ventricle models of each of the one or more ventricles. Respective regions of interest are defined based on the ventricle models. Object regions are first obtained by applying region growing procedure in the regions of interest, and then trimmed based on anatomical knowledge. A 3D surface model of one or more objects is constructed within a 3D space from the segmented structure. A 3D surface is edited and refined by a user selecting amendment points in the 3D space which are indicative of missing detail features. A region of the 3D surface near the selected points is then warped towards the amendment points smoothly, and the modified patch is combined with the rest of the 3D surface yields the accurate anatomy structure model.
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Citations
38 Claims
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1-19. -19. (canceled)
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20. A method for segmenting one or more anatomy structures in a three-dimensional medical image composed of medical data, the method comprising the steps of:
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(a) registering a model, which comprises one or more respective anatomy models of each of the one or more anatomy structures, with the image, thereby forming a correspondence between locations in the model and respective locations in the medical image; (b) according to said correspondence, forming one or more warped models of each of the one or more respective anatomy structures in the image wherein the one or more warped models are fitted to the one or more respective anatomy structures, and defining one or more respective regions of interest in the image based on the one or more warped models, the one or more regions of interest taking the expected shape of the one or more respective anatomy structures; (c) performing region growing on the one or more regions of interest using the medical data to form respective volumes indicative of the respective anatomy structures; and (d) segmenting the medical image using the respective volumes. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification