WSEAS Transactions on Biology and Biomedicine

Print ISSN: 1109-9518
E-ISSN: 2224-2902

Volume 15, 2018

Notice: As of 2014 and for the forthcoming years, the publication frequency/periodicity of WSEAS Journals is adapted to the 'continuously updated' model. What this means is that instead of being separated into issues, new papers will be added on a continuous basis, allowing a more regular flow and shorter publication times. The papers will appear in reverse order, therefore the most recent one will be on top.

A Novel Vision-Based System for Analysis of Abdominal Aortic Aneurysm

AUTHORS: Andrzej Polanczyk, Maciej Polanczyk, Michal Podgórski, Aleksandra Piechota-Polanczyk

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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

KEYWORDS: Deformation measurement, Non-contact optical strain testing, Displacement measurement


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WSEAS Transactions on Biology and Biomedicine, ISSN / E-ISSN: 1109-9518 / 2224-2902, Volume 15, 2018, Art. #6, pp. 40-47

Copyright © 2018 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution License 4.0

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