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首页> 外文期刊>Journal of Biomechanics >DEVELOPMENT OF FEMORAL ATHEROSCLEROSIS IN RELATION TO FLOW DISTURBANCES
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DEVELOPMENT OF FEMORAL ATHEROSCLEROSIS IN RELATION TO FLOW DISTURBANCES

机译:股动脉粥样硬化的发展与流量扰动的关系

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Angiography and post-mortem studies have indicated that disturbed blood flow may promote atherogenesis. Our aim was to demonstrate Row disturbances in vivo and correlate them to the subsequent development of atherosclerosis. The femoral arteries of 17 patients with early atherosclerosis were studied with cineangiography. The films were digitized and analyzed with an image analysis computer. From the time-intensity curves, the arrival time of the contrast medium at each pixel was calculated. In the resulting parametric images, the computer identified zones of delayed contrast filling, (ZDF) which have been shown to correspond to disturbed flow. The progression or regression of atherosclerosis was followed with another angiography 3 years later by computing changes in edge roughness. Arterial segments without how disturbances (defined as ZDF) showed a more marked decrease in edge roughness than those with Row disturbances (p < 0.05). In addition, the edge roughness tended to increase more in segments with larger ZDF area. Angiographic studies of fluid mechanics and atherogenesis are feasible, but larger patient materials are needed. [References: 34]
机译:血管造影和验尸研究表明,血流不畅可能促进动脉粥样硬化的形成。我们的目的是在体内证明行障碍,并将其与动脉粥样硬化的后续发展相关。通过血管造影研究了17例早期动脉粥样硬化患者的股动脉。将胶片数字化并用图像分析计算机进行分析。根据时间强度曲线,计算出造影剂到达每个像素的时间。在生成的参数图像中,计算机确定了延迟对比度填充(ZDF)的区域,这些区域已显示为与干扰流相对应。 3年后,通过计算边缘粗糙度的变化,进行另一次血管造影,以追踪动脉粥样硬化的进展或消退。与行扰动相比,没有扰动的动脉节段(定义为ZDF)的边缘粗糙度降低更为明显(p <0.05)。此外,在具有较大ZDF面积的段中,边缘粗糙度倾向于增加更多。流体力学和动脉粥样硬化的血管造影研究是可行的,但需要更大的患者材料。 [参考:34]

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