Geodesic Distance Algorithm for Extracting the Ascending Aorta from 3D CT Images

Figure 1

Detection of the ascending aorta. (a) Original image, (b) the circle detected by the improved seed detection method based on Hough transformation, (c) the initial seeding for the segment center is marked as the aorta (blue), and the pixels that are 1.5 distance away from the center are marked as background (red). The green line is the border of the aorta segmented by initial seeding. (d) The adaptive seed transfer provided by the segmentation result of the previous slice and the segmented aorta borders.

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