相关实验视频

Updated: Jul 3, 2025

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Published on: September 12, 2012

在典型的环境中和MRI扫描仪内部,TMS产生的声学噪声

Mikko J Nyrhinen¹, Victor H Souza², Risto J Ilmoniemi³

¹Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland; Aalto NeuroImaging, Aalto University School of Science, Espoo, Finland.

Brain stimulation

|February 11, 2024

概括

跨磁刺激 (TMS) 产生大声声音,特别是在MRI扫描仪内,高达158dB. 在TMS和TMS-fMRI期间,听力保护是必要的,以防止听力损伤.

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
声学声学在声学上.

背景情况:

跨磁刺激 (TMS) 线圈产生高强度的冲动声音.
强磁场,如MRI扫描仪中的磁场,可以通过与TMS线圈的相互作用来放大TMS诱导的声噪声.
这种声学噪声的强度受到磁场内的线圈方向的影响.

研究的目的:

测量TMS声音的声压水平 (SPL) 在典型环境和3特斯拉 (3T) MRI扫描仪内.
了解TMS的声学行为,以便与功能性MRI (fMRI) 安全并发使用.

主要方法:

在3TMRI扫描仪磁场 (B0) 和地球磁场内测量了两个商业MRI兼容的TMS系统的SPLs.
在没有B0场的标准环境中,记录了四个TMS刺激器和三个TMS线圈的声学噪声.

主要成果:

在3T核磁共振扫描仪内,SPL的最大峰值达到了158dB (C),远远高于外部测量的117dB (C).
在扫描仪内部,峰值SPL增加了21-45dB (C),这取决于TMS系统和线圈相对于磁场的方向.

结论:

对于并发的TMS-fMRI需要强制性听力保护,并强烈推用于所有TMS程序.
鼓励开发更安静的TMS系统,以减轻听力损伤和其他不良影响的风险.

更多相关视频

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

Published on: June 5, 2017

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure

Published on: July 30, 2009

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Imaging Studies I: CT and MRI

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...