评估大动脉内血管移植的四维流动MRI:试点研究
Paolo Righini1, Francesco Secchi2,3, Daniela Mazzaccaro1
1Operative Unit of Vascular & Endovascular Unit, IRCCS Policlinico San Donato, Via Morandi 30, 20097 San Donato Milanese, Italy.
Diagnostics (Basel, Switzerland)
|June 28, 2023
概括
四维 (4D) 流动MRI是可行的,用于监测胸前大动脉内血管修复 (TEVAR) 后的患者. 虽然可能会出现一些文物,但这种成像技术有效地可视化了血液流动,为CT血管学提供了有价值的替代方案.
科学领域:
- 心血管成像 - 心血管成像
- 医学物理 医学物理
- 放射学 放射学是指放射学
背景情况:
- 胸前动脉内血管修复 (TEVAR) 需要有效的监测.
- 计算机断层扫描血管造影 (CTA) 带来了辐射暴露和后续的后勤挑战.
- 需要先进的成像技术来评估TEVAR后的血液动力学.
研究的目的:
- 评估TEVAR后患者4D流磁共振成像 (MRI) 的可行性.
- 评估4D流动MRI的诊断质量,以可视化通过大动脉内移植的血液流动.
- 为了确定4D流MRI作为TEVAR患者的随访工具的潜力.
主要方法:
- 在TEVAR后接受4D流MRI的10名患者的回顾性分析.
- 使用1.5TMRI系统与原型4D流量敏感序列.
- 评估了图像质量,并确定了流动相关的文物.
主要成果:
- 在所有10名患者中,流量评估是可行的.
- 在3名患者中观察到人工物,包括信号减少和内移植附近的流.
- 大动脉内移植并没有普遍阻碍血液流动的可视化,但可能导致人造物质.
结论:
- 4D流式MRI是一种可行的成像方式,用于TEVAR后的患者随访.
- 它可以可视化胸前动脉的血液流动动态,即使存在内移植.
- 4D流式MRI为CTA提供了一个有希望的,非侵入性的替代方案,用于监测,特别是对于高危人群或那些对重复CT扫描有禁忌的人群.
关键词:
一个大动脉硬化.计算流体动力学 (CFD) 计算流体动力学这里是endoleakakak 的位置.四维 (4D) 流动磁共振四维 (4D) 流动磁共振螺旋式流量螺旋式流量胸前大动脉剖析胸前大动脉内血管修复 (TEVAR)一个旋流的旋流流.更多相关视频
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