在7-特斯拉MRI中,更长时间的输入减轻了阴和
Jacob M Pogson1,2, Ari Shemesh1,3,4, Dale C Roberts1,5
1Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Frontiers in neurology
|December 4, 2023
概括
逐渐进入和退出7-特斯拉 (T) 核磁共振扫描仪可以显著减少和头. 2分钟的进入和20秒的退出时间是缓解磁共振成像期间症状的实用方法.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
背景情况:
- 众所周知,高场磁共振成像 (MRI) 扫描仪,特别是7-Tesla (T) 扫描仪,在患者和技术人员中引起头,头和失衡.
- 了解磁性前体刺激和前体适应的机制是缓解这些副作用的关键.
研究的目的:
- 开发和测试一种简单的范式,以缓解在7T核磁共振扫描中经历的头和头.
- 为了优化进入和退出MRI孔的速度和加速,以最大限度地减少不利的前庭反应.
主要方法:
- 创建了一个包括适应在内的前庭眼反射 (VOR) 途径的三维 (3D) 控制系统模型.
- 该模型被用来模拟不同进入和退出时间对前庭反应的影响.
- 8名参与者接受了7TMRI扫描,同时记录了眼睛运动和主观的感觉,以验证模型的预测.
主要成果:
- 模型模拟表明,增加入口和出口的持续时间减少了阴囊缓相眼速 (SPV),更长的持续时间产生了更大的减少.
- 八名参与者的实验结果证实了该模型,表明更长的进入持续时间最有效地减少了每峰形SPV.
- 所有参与者都报告说,由于进入7T核磁共振扫描仪的时间较长,头发作较少.
结论:
- 增加进入和退出7T核磁共振扫描仪的持续时间可以有效地减少或消除头和相关的鼻.
- 作为减轻7TMRI扫描期间不适的实际解决方案,提出了2分钟进入和20秒退出的范式.
- 这些发现基于前庭适应原理,适用于具有不同磁场强度的MRI扫描仪.
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