形与囊状内动脉瘤对比 - - 动脉瘤前,病理和干预后状态的血液动力学评估
Jana Korte1,2, Laurel M M Marsh2,3, Sylvia Saalfeld2,4
1Department of Fluid Dynamics and Technical Flows, University of Magdeburg, 39106 Magdeburg, Germany.
Journal of clinical medicine
|January 23, 2024
概括
流量转移支架有效治疗状内动脉瘤 (FIA),类似于状类型 (SIA). 这项研究显示,尽管FIA患者的支架扩张率更高,但血液动力学改善相似.
科学领域:
- 神经外科 神经外科
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 最少侵入性疗法是囊性内动脉瘤 (SIA) 的标准.
- 形内动脉瘤 (FIAs) 由于其复杂的形态和稀有性,人们对其了解较少.
- FIA带有缺血等风险,需要进一步研究.
研究的目的:
- 为了比较流量转移支架 (FDS) 在患者特定的状内动脉瘤 (FIA) 与囊状内动脉瘤 (SIA) 的治疗效果.
- 在两种动脉瘤类型中部署FDS后分析血液动力学参数和形态变化.
主要方法:
- 六个患者特异性的内动脉瘤 (三个FIA,三个SIA) 被建模,包括健康和支架版本.
- 进行了18个时间依赖的计算流体动力学 (CFD) 模拟.
- 分析了形态和血液动力学参数,包括速度,旋转率和时间平均壁切应力 (TAWSS).
主要成果:
- 流量转移支架扩张在FIA中比SIA更大.
- 虽然在FIA中,旋转率的降低更高,但振荡速度指数的降低更低.
- 在FIA (37-60%) 和SIA (41-72%) 之间,减速是可比的.
- 与SIA相比,FIA中的时间平均壁切应力减轻程度较低 (Δ30-105%).
结论:
- 流量转移支架在状内动脉瘤中显示出积极的治疗效果,即使这些动脉瘤具有非典型的形状.
- 用FDS治疗的FIA的血液动力学改善与类似位置的SIA的改善相似.
- 这项研究强调了非典型的FIA和SIA在使用FDS治疗时血液动力学参数的相似性.
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