An investigation of cerebral bridging veins rupture due to head trauma
An investigation of cerebral bridging veins rupture due to head trauma
复制标题
DOI：
10.1080/10255842.2022.2092728
复制
发表时间：
2022-06-21
影响因子：
1.6
通讯作者：
Shojaei, Shahrokh
中科院分区：
文献类型：
--
作者：
Abdi, Hamed;Hassani, Kamran;Shojaei, Shahrokh
硬膜下血肿（SDH）是由脑桥静脉破裂引起的常见异常。超过30%的严重头部损伤都有这种情况。本研究的目的是建立一个数值模型来研究脑萎缩和年龄对硬膜下血肿桥静脉破裂的影响。开发了三种模型来模拟硬膜下血肿，即整体实体模型、整体FSI模型和局部实体模型。下一步，将头部损伤准则（HIC）值为744的头部撞击作为加载条件应用到全局模型中。对于整体实体模型，我们测量了颅骨和大脑之间的相对位移。我们从全局FSI模型中提取了压力分布。结果表明，脑萎缩模型的相对位移比健康模型大（分别为2.64 mm和2.20 mm）。此外，萎缩模型的压力值更高。在健康局部模型中，BVs的最大应变约为1.38，而在萎缩模型中，BVs的最大应变为2.77。头部撞击的HIC值为744，对大脑健康的人没有造成严重伤害，但对萎缩的大脑造成了严重损害。脑退行性变和颅内间隙改变是影响脑运动及其易受冲击的两个重要因素。
Subdural hematoma (SDH) is common abnormality that is caused by the rupture of cerebral bridge veins (BVs). It occurs in more than 30% of severe head injuries. The purpose of this research was to develop a numerical model to examine the effects of brain atrophy and age on the rupture of bridging veins in subdural hematoma. Three types of models were developed to simulate subdural hematoma, namely global solid, global FSI, and local solid models. In the next step, a head impact with the head injury criterion (HIC) value of 744 was applied as a loading condition to global models. For the global solid models, we measured the relative displacement between the skull and brain. We extracted the pressure distribution from the global FSI models. The data were used as boundary conditions on the local models to evaluate the damage to the cerebral bridge veins precisely The results showed that the relative displacement was greater in the atrophied model compared to the healthy one (2.64 and 2.20 mm, respectively). In addition, the pressure value was higher in atrophied models. In the healthy local model, the maximum strain on BVs was around 1.38, while in the atrophied model, it was 2.77. The head impact, which had a HIC value of 744, did not cause serious injury to a human with a healthy brain, but it caused severe damage to an atrophied brain. The degeneration of the brain and intracranial space changes are two important factors for the movement of the brain and its vulnerability to impact.