对MRI声学噪声输出和听力保护装置性能进行了审查
1MKS Consulting, Beachwood, Ohio, USA.
Journal of magnetic resonance imaging : JMRI
|December 17, 2024
概括
保护患者免受强烈的MRI噪音需要有效的听力保护设备 (HPD). 正确使用HPD至关重要,因为即使是最好的设备也可能不足,如果不正确应用,会影响患者的安全.
科学领域:
- 医学成像物理 医学成像物理
- 听力学 听力学是指听力学.
- 职业健康 职业健康 职业健康
背景情况:
- 磁共振 (MR) 设备会产生大量的声噪声,因此需要为患者提供听力保护设备 (HPD).
- 现有的HPD性能指标 (例如NRR,SNR,SLC80) 由于不同的实验室方法在全球范围内存在差异,导致不一致的现实世界性能评估.
- MR制造商使用像NEMA MS-4这样的标准来测量最糟糕的噪音输出,但由于狭窄的空间和成像变化,评估患者暴露是复杂的.
研究的目的:
- 审查确定并为接受MRI成像的患者提供足够的听力保护所面临的挑战.
- 为了评估当前HPDs对最响亮的MR设备噪音水平的有效性.
- 突出正确的HPD部署和验证在确保患者安全方面的关键作用.
主要方法:
- 对HPD绩效评估现有的标准化方法的审查.
- 分析MR设备的声输出测量和HPD性能等级.
- 评估理论最坏情况的患者暴露水平,考虑到HPD应用的不确定性和人口的变化.
- 评估政府机构对实际HPD应用的建议.
主要成果:
- 最响亮的MR设备需要性能最高的被动HPD来满足患者保护指南,这取决于正确部署.
- 政府机构不一致的降级建议使人们怀疑一流的HPD是否在实际使用中始终提供足够的保护.
- HPD性能指标和应用有效性的变化使得确保患者获得足够的听力保护变得更加复杂.
结论:
- 在MRI扫描期间确保患者充分的听力保护是具有挑战性的,因为不同的HPD指标和噪音输出复杂性.
- 正确部署和验证听力保护设备对于患者的安全至关重要.
- 可能需要进一步的研究和标准化,以便在临床MR环境中始终保证足够的听力保护.
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