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相关实验视频

Updated: May 19, 2026

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly
14:19

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly

Published on: April 22, 2009

一个屏蔽的32通道机身收发器阵列与集成的电子设备为7T.

Tobey D Haluptzok1, Russell L Lagore1, Simon Schmidt1

  • 1Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, Minnesota, USA.

Magnetic resonance in medicine
|March 31, 2025
PubMed
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一个新的32通道收发器阵列为7特斯拉身体成像提供了改进的信号噪声比 (SNR) 和减少g因子. 这种屏蔽阵列能够承受外部负载,提高各种器官的成像质量.

科学领域:

  • 磁共振成像 (MRI) 是一种磁共振成像技术.
  • 无线电频率 (RF) 线圈技术
  • 高场成像 (7T) 技术

背景情况:

  • 高场MRI (7T) 的进步需要优化的射频 (RF) 线圈阵列,以获得卓越的图像质量.
  • 现有的线圈设计面临信号噪声比 (SNR),g因子和对外部负荷的敏感性方面的挑战.

研究的目的:

  • 开发一个32通道的收发器阵列用于7T身体成像.
  • 为了改进SNR和降低g因子,将加入一个射频屏蔽.
  • 为了确保对外部负载影响的强度.

主要方法:

  • 在单个共振块 (LD和3LD配置) 上研究了RF屏蔽.
  • 构建并验证了一个八块,32通道的屏蔽阵列 (32LD-SH),用于体外使用.
  • 与16通道阵列 (16LD) 进行性能比较 (SNR,并行成像,传输效率);评估负载效应.

主要成果:

  • 与16LD阵列相比,32LD-SH阵列显示了30%更高的中央SNR,并支持三倍加速.
  • 外围SNR高出80%,在10厘米深处的SNR高出25%,3LD块.
  • 32LD-SH阵列显示出对外部负载的强度,与16LD阵列不同.
关键词:
7 T T T T T 7 T T T T 7 T T T T 7 T T T T 7 T T T 7 T T T 7 T T T T 7 T T T T 7 T T T 7 T T T 7 T T T 7 T T T 7 T T T T 7 T T T T 7 T T T T T 7 T T T 7 T T T T T T 7 T T T T T 7 T T T T 7 T T T T 7 T T T T T 7 T T T T T T 7 T T T T T T T 7 T T T T T T T 7 T T T T T T T T T 7 T T T T T 7 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T 7 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T无线电射频屏幕可以保护.在UHFMRI中使用超高频率MRI.身体成像系统的身体成像.循环二极管的二极管收发器阵列是一个收发器阵列.

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相关实验视频

Last Updated: May 19, 2026

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly
14:19

Micro-drive Array for Chronic in vivo Recording: Tetrode Assembly

Published on: April 22, 2009

Cardiac Magnetic Resonance Imaging at 7 Tesla
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Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET
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Radiotracer Administration for High Temporal Resolution Positron Emission Tomography of the Human Brain: Application to FDG-fPET

Published on: October 22, 2019

结论:

  • 一个32通道的屏蔽收发器阵列已成功开发用于7T人体成像.
  • 与16通道阵列相比,该阵列提供了增强的SNR和较低的g因子.
  • 尽管传输效率降低,但并行传输优化使得目标器官的高质量成像成为可能.