对用于植入器件的患者的紧型3T核磁共振扫描仪的评估
Lydia J Bardwell Speltz1, Yunhong Shu2, Robert E Watson2
1Department of Radiology, Mayo Clinic, Rochester, MN, United States; Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN, United States.
Magnetic resonance imaging
|July 19, 2023
概括
小孔MRI扫描仪为植入设备的患者提供了更好的访问. 与传统的1.5T扫描仪相比,一个紧的3TMRI系统提供了优越的脑部成像质量,没有报告任何不良事件.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 放射学 放射学是一门学科.
背景情况:
- 由于安全问题,对某些植入器件的患者进行高质量的磁共振 (MR) 检查的准入受到限制.
- 小孔MR系统提供了一个潜在的解决方案,因为它提供了减少的电磁场暴露.
- 具有先进梯度的紧型3TMRI扫描仪 (C3T) 可以对特定的身体区域进行成像,包括头部.
研究的目的:
- 为了评估小孔扫描仪的安全性和性能,用于MR条件脊柱/神经神经刺激器或被遗弃的心脏植入式电子设备 (CIED) 的患者.
- 为了比较C3T和全身MR系统之间的特定吸收率 (SAR) 的空间分布.
- 为了评估在C3T上进行的大脑MRI检查的诊断图像质量,与传统的1.5T扫描仪相比.
主要方法:
- 开发了一种新型设备评估工具,以单独评估在C3T上植入设备的受试者对MR的安全性.
- 十二名植入器件或放弃CIED线索的受试者接受了MR安全评估.
- 受试者接受了C3T大脑MRI检查和临床1.5TMRI检查,图像由神经放射学家进行分级.
主要成果:
- 所有受试者都能很好地忍受C3T检查,没有报告任何不良事件.
- 与1.5T全身MRI检查相比,C3T显示出明显更好的整体图像质量.
- 空间SAR分析表明,与全身系统相比,C3T的现场下降速度快,提高了某些植入器件的安全性.
结论:
- 像C3T这样的小孔3TMRI扫描仪可以为具有特定MR条件植入器件的患者提供安全和高质量的脑成像.
- 由于C3T的设计具有较小的孔径和快速的电磁场脱落,可以克服这种患者群体的全身系统的局限性.
- 这项技术扩大了以前由于植入器件安全问题而被排除在外的个人对MRI成像的可访问性.
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