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E Alonso-Ortiz¹, D Papp¹, A D'Astous¹

¹NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montréal, QC, Canada.

Neuroimage. Reports

|June 16, 2023

概括

在MRI中磁场的不均性会导致脊髓图像工件. Z-shimming通过纠正磁场梯度来提高图像质量,实时动态闪提供了进一步的改进.

科学领域:

医疗成像医学成像
神经成像是一种神经成像.
磁共振成像技术磁共振成像技术

背景情况:

脊髓MRI质量受到磁感应差异的限制,导致场的不均性和工件.
像z-shimming这样的现有方法使用梯度线圈来纠正通过平面的磁场梯度.

研究的目的:

复制之前关于z-shimming改善T2*加权回声平面成像质量的研究结果.
开发和评估一种新的实时动态闪技术,包括飞机内梯度和呼吸补偿.

主要方法:

复制z-shimming协议的T2*加权的回声平面成像在3特斯拉.
实时动态闪与呼吸诱导的场变化补偿的实施和测试.
从12名健康志愿者获取数据.

主要成果:

Z-shimming 显示了脊髓沿线信号均性的改善.
实时动态闪显示了进一步增强信号均性的潜力.
补偿呼吸诱导的梯度,通过平面和在平面内,改善了结果.

结论:

Z-shimming有效地改善了脊髓MRI信号的一致性.
实时动态闪是减少MRI文物的一个有希望的进步.
对呼吸诱导的场变量的动态补偿为脊髓成像提供了显著的好处.

关键词:

B0闪闪发光的闪闪发光的动态闪闪发光的动态闪闪发光现场在同质性的领域.脊髓是指脊髓中的一些部分.

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Magnetic Resonance Imaging

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