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定量多重玻利动脉旋转标签的标签

Samantha Paterson¹, Antoine Vallatos², Camille Graff²

¹Research and Innovation, University of Aberdeen, UK; Glasgow Experimental MRI Centre, School of Psychology and Neuroscience, University of Glasgow, UK.

Magnetic resonance imaging

|February 19, 2025

概括

我们开发了一种新的动力模型,用于多呼吸扣留动脉旋转标记 (mbASL),以量化脑血流 (CBF). 这种经过验证的模型提供了与现有文献可比的准确CBF值,增强了MRI技术.

科学领域:

磁共振成像是一种磁共振成像技术.
生理学生理学生理学
生物医学工程生物医学工程

背景情况:

多呼吸扣留动脉旋转标记 (mbASL) 是一种MRI技术,用于标记血液水的亚亚巴特式射频脉冲.
作为pCASL和PASL的混合体,mbASL需要一个特定的运动模型来准确量化信号.

研究的目的:

开发和验证mbASL.L的修改动力学模型.
使用拟议的mbASL运动模型,准确量化大脑血流 (CBF).

主要方法:

修改了布克斯顿标准运动模型,以适应具有可变延迟的多个标记脉冲.
优化信号噪声比 (SNR) 通过调整增压脉冲数和反转板厚度.
应用开发的mbASL运动模型用于CBF映射.

主要成果:

生成的mbASL衍生的脑血流图.
获得的CBF平均值为小鼠110毫升/100克/分钟,大鼠96毫升/100克/分钟.
通过参数变化证明了mbASL序列的混合性质.

结论:

成功量化和验证了mbASL运动模型.
确认从mbASL模型中获得的CBF值与已确定的文献值保持一致.
验证了mbASL作为准确CBF测量的可靠方法.

关键词:

在ASL中,ASL是ASL.鼠标大脑鼠标大脑 perfusion 输液是一种输液.量化量化量化量化鼠类大脑鼠类大脑在这里,我们将学习 mbASLL.

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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...