AUTOMATIC DETECTION AND ACCURATE SEGMENTATION OF ABDOMINAL AORTIC ANEURYSM
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United States of America Patent
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Issued Date -
Aug 25, 2011
app pub date -
Apr 16, 2009
filing date -
Apr 16, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention concerns an efficient algorithm for automatic and accurate segmentation of Abdominal Aortic Aneurysm (AAA). The algorithm first identifies the location of the lumen (the inner portion of aorta) and then segments it. The abdominal portion of the lumen is then found using anatomical and geometrical features. This portion of the lumen is straightened using geometrical transformation based on the smoothed centreline. The transformed lumen is then passed through a number of filters, based on geometrical, intensity, gradient and texture features, to search for the existence of the aneurysm. If aneurysm is detected, a deformable model is first initialized to the approximate borders of the aneurysm which are then refined using global and location information.
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