Method for post-processing a three-dimensional image data set of vessel structure
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Abstract
The invention relates to a method for post-processing a 3D image data set of a vessel structure of a human or animal body, in which a 2D DSA (Digital Subtraction Angiography) of the vessel structure is recorded and registered with the 3D image data set. The 2D DSA is compared with a corresponding projection image computed from the 3D data set and this is changed, e.g. by changing the segmentation parameters, to adapt it to the 2D DSA. This enables the outstanding local resolution of the 2D DSA to be used for improving the 3D image data set.
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Citations
25 Claims
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1-9. -9. (canceled)
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10. A method for post-processing a 3D image data set of a vessel structure of a live body, comprising:
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recording a 2D digital subtraction angiography of the vessel structure in a first direction of projection; segmenting the 3D image data set and the 2D digital subtraction angiography through a threshold value method with the segments being assigned to the vessel structure; registering the 2D digital subtraction angiography with the 3D image data set; generating a computed projection image by computing a projection of the 3D image data set on an image plane in the first direction of projection; comparing the computed projection image with the 2D digital subtraction angiography; and automatically modifying a local segmentation threshold value of the 3D image data set for adapting the computed projection image to the 2D digital subtraction angiography. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A medical system for post-processing a 3D image data set of a vessel structure of a live body, comprising:
a computing device that; segments the 3D image data set and a 2D digital subtraction angiography of the vessel structure in a first direction of projection through a threshold value method with the segments being assigned to the vessel structure, registers the 2D digital subtraction angiography with the 3D image data set, generates a computed projection image by computing a projection of the 3D image data set on an image plane in the first direction of projection, compares the computed projection image with the 2D digital subtraction angiography, and automatically modifies a local segmentation threshold value of the 3D image data set for adapting the computed projection image to the 2D digital subtraction angiography. - View Dependent Claims (25)
Specification