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Updated: Jun 7, 2026

Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling
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带有动脉内旋转标签的心肌输液映射:优化标签效率的优化

Felix Spreter1, Johannes Fischer1, Ali Caglar Özen1

  • 1Division of Medical Physics, Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Magnetic resonance in medicine
|June 5, 2025
PubMed
概括

动脉内旋转标签 (iASL) 在MR引导的手术中提供了可靠的心肌 perfusion 测量. 这项研究确定了导管装配线圈的最佳标签效率,为对比剂提供了替代品.

关键词:
在ASL中,ASL是ASL.这就是为什么MRI是MRI.这是心脏病,心脏病.这是一种干预性干预.

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Blood Flow01:29

Blood Flow

Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
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Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...