Robust and fast abdominal aortic aneurysm centerline detection for rupture risk prediction

Hong Zhang; Ender A. Finol

doi:10.1117/12.878128

4 March 2011 Robust and fast abdominal aortic aneurysm centerline detection for rupture risk prediction

Hong Zhang, Ender A. Finol

Author Affiliations +

Proceedings Volume 7963, Medical Imaging 2011: Computer-Aided Diagnosis; 79630J (2011) https://doi.org/10.1117/12.878128
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

This work describes a robust and fast semi-automatic approach for Abdominal Aortic Aneurysm (AAA) centerline detection. AAA is a vascular disease accompanied by progressive enlargement of the abdominal aorta, which leads to rupture if left untreated, an event that accounts for the 13th leading cause of death in the U.S. The lumen centerline can be used to provide the initial starting points for thrombus segmentation. Different from other methods, which are mostly based on region growing and suffer from problems of leakage and heavy computational burden, we propose a novel method based on online classification. An online version of the adaboost classifier based on steerable features is applied to AAA MRI data sets with a rectangular box enclosing the lumen in the first slice. The classifier is updated during the tracking process by using the testing result of the previous image as the new training data. Unlike traditional offline versions, the online classifier can adjust parameters automatically when a leakage occurs. With the help of integral images on the computation of haar-like features, the method can achieve nearly real time processing (about 2 seconds per image on a standard workstation). Ten ruptured and ten unruptured AAA data sets were processed and the tortuosity of the 20 centerlines was calculated. The correlation coefficient of the tortuosity was calculated to illustrate the significance of the prediction with the proposed method. The mean relative accuracy is 95.68% with a standard deviation of 0.89% when compared to a manual segmentation procedure. The correlation coefficient is 0.394.

Citation Download Citation

Hong Zhang and Ender A. Finol "Robust and fast abdominal aortic aneurysm centerline detection for rupture risk prediction", Proc. SPIE 7963, Medical Imaging 2011: Computer-Aided Diagnosis, 79630J (4 March 2011); https://doi.org/10.1117/12.878128

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