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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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相关实验视频

Updated: Jul 18, 2025

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
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四维流量MRI的流量评估软件:可靠性和验证研究的研究.

Barbara Elisabeth Ursula Burkhardt1,2, Christian Johannes Kellenberger3,4, Fraser Maurice Callaghan3,4

  • 1Paediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children's Hospital Zürich, Steinwiesstrasse 75, 8032, Zurich, Switzerland. barbara.burkhardt@kispi.uzh.ch.

La Radiologia medica
|August 24, 2023
PubMed
概括
此摘要是机器生成的。

四维流动MRI (4D流动MRI) 准确地量化了先天性心脏病 (CHD) 患者的血液流动. 其结果与标准的二维相对比 (2D PC) 测量结果一致,支持临床准备.

关键词:
4D 流动MRI 4D 流动MRI是指四维的流动MRI.心脏磁共振是一种心脏磁共振.遗传性心脏病是一种先天性心脏病.流量量化的量化流量.血液动力学 血液动力学阶段对比磁共振成像成像技术

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科学领域:

  • 心血管磁共振成像 - 心血管磁共振成像
  • 医学成像分析 医学成像分析
  • 遗传性心脏病诊断 诊断 遗传性心脏病诊断

背景情况:

  • 四维时间分辨率相位对比心血管磁共振成像 (4D流动MRI) 提供了全面的血液流量量化.
  • 准确的血液动力学评估对于管理先天性心脏病 (CHD) 患者至关重要.
  • 与既有方法进行比较是验证新的成像技术所必需的.

研究的目的:

  • 用四种不同的4D流MRI后处理软件包来评估大动脉和肺动脉的净流量体积的准确性.
  • 为了比较4D流动MRI测量与标准的2D cine相对比 (2D PC) 测量在CHD患者.
  • 评估临床应用4D流MRI后处理的可靠性和可重复性.

主要方法:

  • 47名双心脏性心脏病患者接受了1.5T 4D流MRI和2DPC成像.
  • 净流量量被测量在上升的大动脉和肺动脉使用四个不同的4D流量后处理软件应用程序.
  • 进行了对偏移纠正的2DPC数据的比较,可靠性通过布兰德-阿尔特曼分析和ICC.评估. 还评估了观察者间的可重现性.

主要成果:

  • 所有四个4D流MRI软件包都显示出与2DPC测量非常好的相关性和一致性 (ICC ≥ 0.94).
  • 内部流量控制表现为2D PC (r ≥ 0.95) 和4D流量MRI (r ≥ 0.94) 的极佳线性.
  • 在所有软件供应商中,观察者之间的可靠性始终很好 (ICC ≥ 0.94).

结论:

  • 通过四个商业应用处理的大胸动脉4D流动MRI获得的血液动力学数据与常规的2DPC值密切匹配.
  • 这些发现表明,4D流MRI衍生数据适合在心脏病患者管理中临床实施.
  • 4D流动MRI代表了复杂的心血管疾病中血液流量量化的强有力的工具.