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Wall shear stress calculation based on MRI image in patients with abdominal aortic aneurysm (AAA)

机译:基于MRI图像的腹主动脉瘤(AAA)患者壁切应力计算

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Abdominal aortic aneurysm (AAA) is a disorder of the aorta that can cause patients died because of bleeding. Bleeding occurs due to rupture of an abdominal aortic wall with aneurysms. clinical treatment to prevent rupture of the aortic wall is done by surgery. This treatment is based on the magnitude of the risk of rupture. One of the parameters used to evaluate the risk of this is the shear wall stress. In this study, the value of the shear wall tension is a result of the MRI image analysis. Wall shear stress calculations based on the model of blood flow velocity profile that is a function of the position of the blood flow velocity near the wall in polar coordinates with the origin is the center of the lumen of the aorta is assumed paraboloid. The position of the wall shear stress and its value can be determined using this approach. Three patients with different diameters are used for the calculation of this stress.
机译:腹主动脉瘤(AAA)是一种主动脉疾病,可导致患者因出血而死亡。由于腹主动脉壁破裂伴动脉瘤而发生出血。预防主动脉壁破裂的临床治疗是通过手术进行的。该治疗基于破裂风险的大小。用于评估这种风险的参数之一是剪力墙应力。在这项研究中,剪力墙张力的值是MRI图像分析的结果。基于血流速度分布图模型的壁剪切应力计算是壁面附近血流速度位置的函数,极坐标以原点是主动脉腔的中心为抛物面。可以使用这种方法确定壁切应力的位置及其值。使用三名直径不同的患者来计算该应力。

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