Dynamic Active Contour Model for Size Independent Blood Vessel Lumen Segmentation and Quantification in High-Resolution Magnetic Resonance Images
We are presenting a software tool developed for the purpose of atherosclerotic plaque study in high resolution Magnetic Resonance Images. A new implementation of balloon-type active contour model used for segmentation and quantification of blood vessel lumen is described. Its originality resides in a dynamic scaling process which makes the influence of the balloon force independent of the current size of the contour. The contour can therefore be initialized by single point. Moreover, system matrix inversion is performed only once. Hence computational cost is strongly reduced. This model was validated in ex vivo vascular images from Watanabe heritable hyperlipidaemic rabbits. Automatic quantification results were compared to measurements performed by experts. Mean quantification error was smaller than average intra-observer variability.
Keywordsmedical imaging active contour model magnetic resonance images
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- 4.Serfaty, J.M., Chaabane, L., Tabib, A., Chevallier, J.M., Briguet, A. and Douek, P.: The value of T2-Weighted High Spatial Resolution Magnetic Resonance Imaging in Classifying and Characterizing Atherosclerotic Plaques: An In Vitro Study. Radiology (2001) (in press)Google Scholar
- 6.Wink, O., et al.: Semi-automated quantification and segmentation of abdominal aorta aneurysins from CTA volumes. CARS Paris, France (1999) 208–212Google Scholar
- 10.Hernández-Hoyos, M., Anwander, A., Orkisz, M., Roux, J.-P., Douek, P.C., Magnin, I.E.: A Deformable Vessel Model with Single Point Initialization for Segmentation, Quantification and Visualization of Blood Vessels in 3D MRA. MIC-CAI, Pittsburgh, Oct. 9–13 (2000) 735–745Google Scholar