相关实验视频

Updated: Jun 13, 2025

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

在3特斯拉以无线NMR标记器和超短回声导航器进行前景头部运动校正

Saikat Sengupta¹, Antonio Glenn², Baxter P Rogers¹

¹Vanderbilt University Institute of Imaging Science,Vanderbilt University Medical Center, Nashville, TN 37235, USA; Department of Radiology and Radiological Sciences,Vanderbilt University Medical Center, Nashville, TN 37235, USA.

Magnetic resonance imaging

|September 14, 2024

概括

这项研究在3特斯拉大脑成像中引入了改进的无线NMR标记器,用于前运动校正 (PMC). 改进的技术准确地纠正头部运动,改善图像质量,没有文物.

科学领域:

磁共振成像技术磁共振成像技术
神经成像是一种神经成像.
生物医学工程生物医学工程

背景情况:

使用无线NMR标记器的前运动校正 (PMC) 对于头部运动在7特斯拉是有效的.
技术挑战包括标记物识别,文物和低信号噪声比 (SNR),限制采用.

研究的目的:

为了克服基于无线NMR标记的PMC的局限性.
为了将PMC扩展到3特斯拉的大脑成像.

主要方法:

实现了6度自由度 (DOF) PMC与超短回声时间 (UTE) 导航器和优化的MnCl2标记器.
杆头线圈灵敏度用于个别标记器的识别和跟踪.
使用可变翻转角度 (VFA) 和实时过来增强标记SNR.

主要成果:

使用无线标记器的PMC显著改善了所有受试者的3D T1加权图像质量.
没有观察到明显的标记器件.
运动跟踪精度为0.01-0.06毫米/度,对序列持续时间的影响最小.

结论:

无线NMR标记器为脑成像中的6DOF PMC提供了准确,无校准和经济的解决方案.
应对挑战需要综合导航器设计,样本选择和实时数据处理.

关键词:

导航器导航器导航器导航器预期的运动校正.无线的NMR标记器是无线的.

更多相关视频

Neuronavigated Focalized Transcranial Direct Current Stimulation Administered During Functional Magnetic Resonance Imaging

Neuronavigated Focalized Transcranial Direct Current Stimulation Administered During Functional Magnetic Resonance Imaging

Published on: November 15, 2024

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

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...