椎-基底动脉瘘合并椎-基底动脉栓塞的血流动力学特征:基于磁共振血管造影的研究。

IF 2 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
American journal of nuclear medicine and molecular imaging Pub Date : 2024-08-25 eCollection Date: 2024-01-01 DOI:10.62347/TLNN8316
Xiao-Qin Chen, Jie Jiang, Jian Xing, Zhao-Kai Ming, Min Zhu, Quan Bao, Ming-Cheng Hu
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引用次数: 0

摘要

目的:本研究利用磁共振血管造影术(MRA)深入研究椎基底动脉狭窄(VBAF)合并椎基底动脉狭窄(VBD)的血液动力学特征。通过总结血液动力学特征和识别高危人群,我们旨在为临床治疗提供见解:方法:以 MRA 图像为基础,构建动脉三维几何模型。方法:以 MRA 图像为基础,构建动脉三维几何模型,将 22 例患者分为对照组、S 组、L 组、U 组和螺旋组,并采用计算流体动力学方法对血管进行数值模拟分析:结果:获得了 VBAF 结合 VBD 模型的血流动力学参数,包括血流速度、振荡剪应力(OSI)、壁剪应力(WSS)和动脉瘤形成指标(AFI)。L组、U组和螺旋组的V、OSI和WSS指数明显高于对照组(P<0.05)。这些组的高速血流、升高的 WSS 和增加的 OSI 都集中在椎动脉瓣膜部位,沿迂曲的椎动脉和基底动脉段分散分布,同时双侧椎动脉的参数也存在显著差异:这项初步调查将 L 组、U 组和螺旋组确定为高危人群。异常的血液动力学可能会导致血管壁病理学的恶性循环,增加发生脑梗塞等不良事件的可能性。临床应重点关注这些群体中的个体及其相应的血管区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hemodynamic characteristics of vertebrobasilar artery fenestration combined with vertebrobasilar dolichoectasia: a study based on magnetic resonance angiography.

Purpose: This study delves into the hemodynamic characteristics of Vertebrobasilar Artery Fenestration (VBAF) combined with Vertebrobasilar Dolichoectasia (VBD) using Magnetic Resonance Angiography (MRA). By summarizing the hemodynamic features and identifying high-risk populations, we aim to provide insights for clinical treatment.

Methods: Utilizing MRA images as a foundation, arterial three-dimensional geometric models were constructed. A total of 22 cases were categorized into control, S, L, U, and Spiral groups, and numerical simulation analysis of the vessels was conducted using computational fluid dynamics methods.

Results: Hemodynamic parameters of the VBAF combined with the VBD model were obtained, including blood flow velocity, oscillatory shear stress (OSI), wall shear stress (WSS), and aneurysm formation indicator (AFI). The V, OSI, and WSS indices of the L, U, and Spiral groups were significantly higher than those of the control group (P < 0.05). High-speed blood flow, elevated WSS, and increased OSI in these groups were concentrated at the fenestration site, with scattered distribution along the tortuous vertebral artery and basilar artery segments, accompanied by significant differences in the parameters of the bilateral vertebral arteries.

Conclusion: This preliminary investigation identifies the L, U, and Spiral groups as high-risk populations. Abnormal hemodynamics may lead to a vicious cycle in vascular wall pathology, increasing the likelihood of adverse events such as cerebral infarction. Clinical attention should focus on individuals within these groups and their corresponding vascular regions.

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来源期刊
American journal of nuclear medicine and molecular imaging
American journal of nuclear medicine and molecular imaging RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
自引率
4.00%
发文量
4
期刊介绍: The scope of AJNMMI encompasses all areas of molecular imaging, including but not limited to: positron emission tomography (PET), single-photon emission computed tomography (SPECT), molecular magnetic resonance imaging, magnetic resonance spectroscopy, optical bioluminescence, optical fluorescence, targeted ultrasound, photoacoustic imaging, etc. AJNMMI welcomes original and review articles on both clinical investigation and preclinical research. Occasionally, special topic issues, short communications, editorials, and invited perspectives will also be published. Manuscripts, including figures and tables, must be original and not under consideration by another journal.
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