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减少7T MR的短期效应与重复暴露
Boel Hansson1,2, Benjamín Garzón3, Martin Lövdén4,5
1Department of Medical Imaging and Physiology, Skåne University Hospital, Lund, Sweden. boel.hansson@med.lu.se.
Neuroradiology
|January 25, 2024
概括
健康的受试者适应重复的超高波段 (UHF) 7特斯拉 (T) 磁共振 (MR) 扫描,随着时间的推移,经历的头和恶心等短期影响较少. 运动和外围神经刺激不受多次UHFMR暴露的影响.
科学领域:
- 神经成像是一种神经成像.
- 医学物理 医学物理
背景情况:
- 超高场 (UHF) 磁共振 (MR) 成像,特别是在7特斯拉 (T),提供先进的诊断功能.
- 虽然UHF MR通常耐受良好,但可能会引起过渡性副作用,如头和恶心.
- 关于多次UHF MR暴露的累积影响的数据有限.
研究的目的:
- 调查在每周重复接受7T MR检查的健康个体中对短期影响的主观经验.
- 在7T的多功能MRI (fMRI) 会议期间评估运动工件的发生和变化.
- 在七次连续的7T MR检查中评估受试者的适应能力和舒适度.
主要方法:
- 使用问卷收集有关参与者经历的短期影响的数据.
- 在fMRI运动技能研究中对每个参与者进行了每周七次7T MR检查.
- 分析了使用统计模型在fMRI图像中报告的症状和定量运动的变化.
主要成果:
- 共有360个问卷由67名参与者填写,分为一到七次考试.
- 随着检查次数的增加 (p<0.03),观察到头,运动不一致,恶心和头痛的显著减少.
- 不检测到重复暴露对外围神经刺激或受试者运动的显著影响;整体检查体验显著改善 (p<0.001).
结论:
- 在多次7T MR检查中,健康的受试者表现出适应强静电磁场的能力.
- 主观的短期影响,包括头,恶心和头痛,随着持续暴露而减少,与参与者的舒适度增加相关.
- 重复的7T fMRI 会议不会导致对象运动的显著变化,这表明随着时间的推移,成像质量保持稳定.
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