计算机建模方法,在健康的大动脉中分析血液动力学行为
Ahmed M Al-Jumaily1, Mohammad Al-Rawi2,3, Djelloul Belkacemi4
1Institute of Biomedical Technologies, Auckland University of Technology, Auckland 1010, New Zealand.
Bioengineering (Basel, Switzerland)
|September 27, 2024
概括
计算流体动力学 (CFD) 为非侵入性大动脉评估提供了一种快速而准确的方法. 这种方法增强了对老年人心血管疾病 (CVD) 的早期检测,提高了诊断的可访问性.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 计算科学 计算科学
背景情况:
- 心血管疾病 (CVD) 是老年人死亡的主要原因,需要早期检测.
- 评估大动脉血液动力学功能的非侵入性工具对于及时诊断和改善患者结果至关重要.
- 计算流体动力学 (CFD) 为心血管动力学提供了一种高效且具有成本效益的模拟方法.
研究的目的:
- 开发和评估一个CFD模型来评估大动脉几何和血液动力学.
- 研究网格类型 (四面体和多面体) 对模拟准确性和速度的影响.
- 确定CFD在非侵入性大动脉评估中的临床可行性.
主要方法:
- 使用四面体和多面体网格 (0.21毫米网格大小) 创建了一个健康的大动脉的CFD模型.
- 评估了主要的血液动力学参数 (压力波形,壁切应力,相对停留时间,振荡切索数,内皮细胞激活潜力).
- 模拟准确性和处理时间被评估以确定临床适用性.
主要成果:
- 该CFD模型在血液动力学评估中实现了超过95%的准确性.
- 模拟时间减少了多达54%,整个过程在120分钟内完成.
- 四面体和多面体网格都产生了可靠的血液动力学分析结果.
结论:
- CFD模拟提供准确和有效的非侵入性大动脉血液动力学数据.
- 开发的CFD方法在临床上是可行的,为例行检查提供快速诊断.
- 这种方法可以改善心血管疾病的诊断,特别是在服务不足的人群中.
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