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用支架辅助线圈栓塞治疗的内动脉瘤:通过四维超短TE MR血管学评估

Hiroyuki Uetani¹, Mika Kitajima^2,3, Yuki Ohmori⁴

¹Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. hama-moto@hotmail.co.jp.

European radiology

|June 7, 2023

概括

具有超短回声时间 (4D mUTE-MRA) 的四维MRI血管学有效评估在支架辅助线圈栓塞 (SACE) 后的内动脉瘤. 这种新的方法显示出与数字减去血管学对阻塞状况的良好一致,并提供了有价值的流量信息.

科学领域:

血管神经学血管神经学
医疗成像医学成像
干预性神经放射学干预性神经放射学

背景情况:

用支架辅助线圈栓塞 (SACE) 治疗的内动脉瘤需要有效的后续成像.
传统方法在评估治疗结果方面可能存在局限性.
需要新的成像技术来提高评估准确性和患者管理.

研究的目的:

开发和评估四维磁共振血管学与超短回声时间 (4D mUTE-MRA) 的实用性,用于评估用SACE治疗的内动脉瘤.
为了比较4D mUTE-MRA与数字减去血管学 (DSA) 的诊断性能.

主要方法:

31名用SACE治疗的内动脉瘤患者接受了4D mUTE-MRA (3T) 和DSA.
获得了高空间 (0.5mm3) 和时间 (200毫秒间隔) 分辨率的动态MRA图像.
两个独立的读者使用标准化尺度评估了动脉瘤封闭状态和支架流量.
通过使用kappa统计数据进行了观察员间和模式间协议的评估.

主要成果:

在4D mUTE-MRA和DSA之间的动脉瘤封闭状态中观察到优异的间接性 (κ=0.92) 和观察者间 (κ=0.96) 协议.
4D mUTE-MRA显示,单体支架与多体支架 (p<0.001) 和开放细胞支架与闭细胞支架 (p<0.01) 中支架流动的可视化显著更好.
这项技术提供了对支架和远端动脉血动力学的良好到优秀的可视化.

结论:

由于其高空间和时间分辨率,4D mUTE-MRA是评估SACE后内动脉瘤的宝贵工具.
该技术为确定闭塞状态与DSA提供了良好的协议.
4D mUTE-MRA提供了对支架和远部血管通透性的关键血液动力学见解,有助于治疗后续.

关键词:

内动脉瘤是一个内动脉瘤.磁共振血管学是一种磁共振血管学.磁共振成像技术磁共振成像技术支架支架是一种支架.

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