通过个性化计算建模,心脏血液流动的能量在高伤心肌病中的能量
Owen Baenen1,2, Angie Carolina Carreño-Martínez3, Theodore P Abraham3
1Department of Mechanical Engineering, Rice University, Houston, TX 77005, USA.
Journal of cardiovascular development and disease
|October 27, 2023
概括
个性化计算流体动力学模型揭示了高性心肌病 (HCM) 患者的异常血流模式. 这些发现表明,心脏缩性心肌病的心脏改变了血液动力学可能会恶化疾病的进展.
科学领域:
- 心血管生理学心血管生理学
- 医疗成像医学成像
- 计算流体动力学的流体动力学.
背景情况:
- 超性心肌病 (HCM) 涉及左心室 (LV) 壁的加厚,可能导致心脏功能障碍.
- 在HCM中改变的血液流动模式可能会加剧疾病的进展,但这并未得到充分理解.
- 影响这些流动模式的患者特定因素在很大程度上是未知的.
研究的目的:
- 使用心脏磁共振 (cMR) 图像开发左心室 (LV) 的个性化计算流体动力学 (CFD) 模型.
- 调查心脏缩和患者间变异性如何影响LV内血液流动模式.
- 在正常和HCM患者特定模型中量化流量模式和能量.
主要方法:
- 从cMR成像数据生成患者特定的LVCF模型.
- 在LV模型中模拟血液流动以确定速度场.
- 量化流动模式,能量转移时间和动能分布.
主要成果:
- 与正常心脏相比,HCM心脏表现出异常的LV内血流模式.
- 在HCM中观察到从LV壁到血液流动的能量传输的时间不匹配.
- 在高性心肌病模型中,动能流动模式发生了改变.
结论:
- 个性化CFD建模为分析HCM中的血液动力学提供了一个有前途的方法.
- 在HCM中,异常的流动模式和能量转移动态可能会导致疾病的进展.
- 这种方法可以增强临床理解和管理多变性心肌病.
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