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迄今为止，AAA的大小被认为是决定其破裂的最主要的危险性因素，而小AAA破裂的报道，提示还存在其它因素。作者选用30例AAA病人，利用X线计算机轴线体层扫描（CAT）分别重建其AAA的立体数学模型，采用AAA的直径（D）、长度（L）、血栓厚度、动脉硬化钙化斑点的位置和范围，以及来自于椎体的外部压力等指标作为参数，然后通过有限元素法（FEM），即微积分原理计算AAA壁不同区域承受的压力。为了便
To date, the size of AAA is considered the most important risk factor determining its rupture, while the report of a small AAA rupture suggests there are other factors. The author selected 30 cases of AAA patients, the use of X-ray computed tomography (CAT) to rebuild the three-dimensional mathematical model of AAA, using the diameter of the AAA (D), length (L), thrombus thickness, atherosclerotic plaque location and Range, as well as the external pressure from the vertebral body and other indicators as a parameter, and then through the finite element method (FEM), calculus principle that calculates the pressure in different regions of the AAA wall. For the sake of it