WSEAS Transactions on Biology and Biomedicine
Print ISSN: 1109-9518, E-ISSN: 2224-2902
Volume 15, 2018
A Novel Vision-Based System for Analysis of Abdominal Aortic Aneurysm
Authors: , , ,
Abstract: Aortic aneurysm weakens the vessel wall and significantly changes blood hemodynamics. We proposed a novel Vision-Based- System (VBS) for the analysis of abdominal aortic aneurysm (AAA) wall deformation for different hemodynamic conditions. The VBS system has hardware part composed of 9 cameras system built around a transparent container filled with liquid and surrounding a 3d model of aorta, thus simulating work of aorta in human’s body. While, software part is based on self-made algorithm for the analysis of captured images by the set of cameras and calculation of wall deformation factor which can be assessed by physicians. The most effort was allocated into image rectification and tracking aorta size in sequence of images. To verify the VBS a series of experiments were performed with the use of 3d-printed elastic AAA models from three patients for the reconstruction of real hemodynamic. Experimental results were confronted with medical data from AngioCT and 2D speckle-tracking echocardiography (2DSTE). The accuracy of the proposed method for the reconstruction of the AAA deformation after comparison with expert assessment (clinician) was 98.56%. We demonstrated that there is a range between cameras and container in which correct results can be acquired, without influence of light refraction. Correct recognition of spatial configuration of the AAA and the deformation of its wall is one of the key points in the surgical treatment. Mistakes made at this stage may lead to re-surgical operations which is unnecessary risk for patients’ lives.
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Pages: 40-47
WSEAS Transactions on Biology and Biomedicine, ISSN / E-ISSN: 1109-9518 / 2224-2902, Volume 15, 2018, Art. #6