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分析不同扫描序列参数设置对露天 MRI 扫描区域产生的振动和噪声的影响。

Analysis of the Influence of Different Settings of Scan Sequence Parameters on Vibration and Noise Generated in the Open-Air MRI Scanning Area.

机构信息

Institute of Measurement Science, Slovak Academy of Sciences, 841 04 Bratislava, Slovakia.

出版信息

Sensors (Basel). 2019 Sep 27;19(19):4198. doi: 10.3390/s19194198.

DOI:10.3390/s19194198
PMID:31569713
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6806082/
Abstract

A system of gradient coils of the magnetic resonance imaging (MRI) device produces significant vibration and noise. Energetic relations of these phenomena are analyzed depending on MRI scan parameters (sequence type, repetition time (TR), echo time (TE), slice orientation, body weight). This issue should be investigated because of negative physiological and psychological effects on a person exposed to vibration and acoustic noise. We also measured the sound pressure level in the MRI scanning area and its vicinity in order to minimize these negative impacts, depending on intensity and time duration of exposition. From the recorded vibration and noise signals, the energy parameters were determined and statistically analyzed, and the obtained results were visually and numerically compared. Finally, subjective evaluation by a listening test method was used to analyze the influence of the generated MRI noise on the human psyche.

摘要

磁共振成像（MRI）设备的梯度线圈系统会产生显著的振动和噪声。这些现象的能量关系根据 MRI 扫描参数（序列类型、重复时间（TR）、回波时间（TE）、切片方向、体重）进行分析。由于振动和噪声对暴露于其中的人的生理和心理产生负面影响，因此应该研究这个问题。为了根据暴露的强度和时间来最小化这些负面影响，我们还测量了 MRI 扫描区域及其附近的声压级。从记录的振动和噪声信号中，确定了能量参数并进行了统计分析，并对获得的结果进行了直观和数值比较。最后，使用听力测试方法进行主观评估，以分析 MRI 噪声对人类心理的影响。

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