首页> 外文会议>ASME summer bioengineering conference;SBC2012 >3D STRESS COMPUTATIONS IN ATHEROSCLEROTIC ARTERIES: THE INFLUENCE OF AXIAL IMAGE RESOLUTION
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3D STRESS COMPUTATIONS IN ATHEROSCLEROTIC ARTERIES: THE INFLUENCE OF AXIAL IMAGE RESOLUTION

机译:动脉粥样硬化动脉中的3D应力计算:轴向图像分辨率的影响

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We generated high resolution 3D models of atherosclerotic artery segments based on histology which include all relevant plaque components including thin media and adventitia layers and incorporating initial stresses. We demonstrated that lower sampling leads to geometrical axial smoothing and that the resulting stress distribution was qualitatively similar to higher sampling. However, the magnitude of maximum stresses and their location are significantly influenced by lower sampling: an under prediction of maximum stress of 23% was observed in one case. The relationship of higher stresses at thinner caps was maintained for all sampling cases but no definite relationship was found between under sampling and increase or decrease of maximum cap stress. Future work includes further data analysis on the other three 3D arterial sections and extensive statistical and geometrical analyses such as curvature calculations.
机译:我们根据组织学生成了高分辨率的动脉粥样硬化动脉节段3D模型,其中包括所有相关的斑块成分,包括薄介质和外膜层,并结合了初始应力。我们证明了较低的采样会导致几何轴向平滑,并且所产生的应力分布在质量上与较高的采样相似。但是,最大应力的大小及其位置会受到较低采样的显着影响:在一种情况下,观察到最大应力的预测不足为23%。在所有采样情况下,在更薄的瓶盖处都保持较高应力的关系,但在欠采样与最大瓶盖应力的增加或减少之间没有确定的关系。未来的工作包括对其他三个3D动脉部分的进一步数据分析以及广泛的统计和几何分析(例如曲率计算)。

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