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首页> 外文期刊>Journal of Biomechanics >Influence of limited field-of-view on wall stress analysis in abdominal aortic aneurysms
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Influence of limited field-of-view on wall stress analysis in abdominal aortic aneurysms

机译:有限视野对腹主动脉瘤壁应力分析的影响

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摘要

Abdominal aortic aneurysms (AAAs) are local dilations of the aorta which can lead to a fatal hemorrhage when ruptured. Wall stress analysis of AAAs has been widely reported in literature to predict the risk of rupture. Usually, the complete AAA geometry including the aortic bifurcation is obtained by computed tomography (CT). However, performing wall stress analysis based on 3D ultrasound (3D US) has many advantages over CT, although, the field-of-view (FOV) of 3D US is limited and the aortic bifurcation is not easily imaged. In this study, the influence of a limited FOV is examined by performing wall stress analysis on CT-based (total) AAA geometries in 10 patients, and observing the changes in 99th percentile stresses and median stresses while systematically limiting the FOV.
机译:腹主动脉瘤(AAAs)是主动脉的局部扩张,破裂时可能导致致命性出血。 AAA的壁应力分析已在文献中广泛报道,以预测破裂的风险。通常,通过计算机断层扫描(CT)获得包括主动脉分叉在内的完整AAA几何形状。但是,尽管3D US的视野(FOV)受到限制并且主动脉分叉不易成像,但基于3D超声(3D US)进行壁应力分析比CT具有许多优势。在这项研究中,通过对10位患者基于CT的(总)AAA几何结构进行壁应力分析,并在系统限制FOV的同时观察99%应力和中位应力的变化,来检查有限FOV的影响。

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