VIRTUAL ENDOSCOPY
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United States of America Patent
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Issued Date -
May 22, 2008
app pub date -
Nov 22, 2006
filing date -
Nov 22, 2006
priority date (Note) -
Abandoned
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Abstract
A method for automatically determining a start or finish location near to an end of a lumen in a medical image data set is described. The location may thus be used in determining a camera path for virtual endoscopy (e.g. colonoscopy). The data set comprises a plurality of voxels arranged along first, second and third directions and the method includes: segmenting the data set to identity a group of voxels classified as belonging to the lumen; selecting one of the axes of the data set as a primary direction based on an expected direction of the lumen at the end of interest; selecting a slice through the data set which is perpendicular to the primary direction and includes voxels at a spatial extremity of the group of voxels classified as belonging to the lumen along this direction; identifying a two-dimensional (2D) region of the voxels classified as belonging to the lumen within the selected slice; and selecting, based on the position of the 2D region, a position within the data set as the terminal location for the virtual colonoscopy camera path.
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