New presentation method for magnetic resonance angiography images based on skeletonization

Ingela Nystroem; Orjan Smedby

doi:10.1117/12.383078

18 April 2000 New presentation method for magnetic resonance angiography images based on skeletonization

Ingela Nystroem, Orjan Smedby

Proceedings Volume 3976, Medical Imaging 2000: Image Display and Visualization; (2000) https://doi.org/10.1117/12.383078
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

Abstract

Magnetic resonance angiography (MRA) images are usually presented as maximum intensity projections (MIP), and the choice of viewing direction is then critical for the detection of stenoses. We propose a presentation method that uses skeletonization and distance transformations, which visualizes variations in vessel width independent of viewing direction. In the skeletonization, the object is reduced to a surface skeleton and further to a curve skeleton. The skeletal voxels are labeled with their distance to the original background. For the curve skeleton, the distance values correspond to the minimum radius of the object at that point, i.e., half the minimum diameter of the blood vessel at that level. The following image processing steps are performed: resampling to cubic voxels, segmentation of the blood vessels, skeletonization ,and reverse distance transformation on the curve skeleton. The reconstructed vessels may be visualized with any projection method. Preliminary results are shown. They indicate that locations of possible stenoses may be identified by presenting the vessels as a structure with the minimum radius at each point.

Citation Download Citation

Ingela Nystroem and Orjan Smedby "New presentation method for magnetic resonance angiography images based on skeletonization", Proc. SPIE 3976, Medical Imaging 2000: Image Display and Visualization, (18 April 2000); https://doi.org/10.1117/12.383078

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