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相关概念视频

Imaging Studies for Cardiovascular System IV: CMRI01:21

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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使用亚毫米分辨率的双VENC相对照MRI在3T对脑孔动脉的脉冲性评估.

Jianing Tang1,2, Sang Hun Chung1, Maria Gamez1

  • 1Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.

Journal of magnetic resonance imaging : JMRI
|December 27, 2025
PubMed
概括

在3T的双速编码 (双VENC) 相对比MRI可靠地评估大脑穿孔动脉脉动. 这种技术提供了高准确度的评估,可能对诊断大脑小血管疾病有价值.

关键词:
动脉脉动的脉动性 动脉脉动的脉动性大脑穿孔动脉的大脑穿孔动脉大脑小血管疾病 (cSVD)这是一个双VENC.阶段对比的核磁共振成像 (MRI)脉动性指数 (PI) 是指脉动性指数.

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科学领域:

  • 神经成像是一种神经成像.
  • 血管生物学 血管生物学
  • 医学物理 医学物理

背景情况:

  • 大脑穿孔动脉功能障碍显著导致大脑小血管疾病.
  • 开发可访问的MRI技术来评估这些动脉至关重要.

研究的目的:

  • 评估双速编码 (双VENC) 阶段对比MRI (PC-MRI) 在3T的可行性和可靠性,以评估脑穿孔动脉脉动.

主要方法:

  • 一项前性研究涉及12名健康的年轻人和31名老年人.
  • 双VENC 2D PC-MRI 在3T和7T进行.
  • 评估了3T和7T之间的可复制性和一致性,以及老年人与年龄,认知和血管风险因素的关联.

主要成果:

  • 与单个VENC方法相比,3T双VENCPC-MRI证明了脉动性指数 (PI) 和穿孔器数 (N穿孔器) 的复制性优于单个VENC方法.
  • 从3T双VENCPC-MRI进行的测量结果与7T双VENC相比没有显著差异.
  • 老年人的PI增加与衰老和认知障碍有关,但不是Nperforator. 血管风险因素与PI有关,而不是N.

结论:

  • 3T双VENCPC-MRI提供大脑穿孔动脉脉动力的高准确性评估.
  • 这种技术是可靠的,可以作为一个有价值的工具在广泛可用的3TMRI系统.