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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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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...
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相关实验视频

Updated: Jul 1, 2025

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring
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Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

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通过使用供应商无关序列来减少跨扫描器变异性,用于单扩散MRI.

Qiang Liu1,2, Lipeng Ning1, Imam Ahmed Shaik1

  • 1Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Magnetic resonance in medicine
|March 12, 2024
PubMed
概括
此摘要是机器生成的。

使用Pulseq的新供应商中立扩散MRI (dMRI) 序列显著降低了扫描仪间的可变性. 这提高了不同MRI机器的数据一致性,有利于多中心神经成像研究.

关键词:
核磁共振成像协调协调Pulseq 的意思是脉冲.这是一个dMRI.开放式核磁共振成像 (MRI).这是一个开源的开源软件.可复制性的可复制性供应商不可知主义者

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相关实验视频

Last Updated: Jul 1, 2025

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科学领域:

  • 医疗成像医学成像
  • 神经科学是一个神经科学.
  • 生物物理学的生物物理.

背景情况:

  • 扩散MRI (dMRI) 对于绘制白质结构至关重要.
  • 扫描器间的变化使多中心研究和数据可复制性复杂化.
  • 开发供应商中立的序列对于协调dMRI数据至关重要.

研究的目的:

  • 使用开源Pulseq平台开发一个供应商中立的dMRI脉冲序列.
  • 为了减少不同MRI供应商之间的DMRI测量的跨扫描器变化.
  • 提高神经成像研究的可复制性.

主要方法:

  • 在Pulseq.中实施了基于EPI的标准dMRI序列.
  • 在西门子Prisma和GE Premier扫描仪上测试了序列.
  • 使用幻影和人类受试者数据评估变异性,分析分数异构性 (FA) 和平均扩散性 (MD).

主要成果:

  • Pulseq序列在不同供应商中将幻影变化降低了2.5倍以上.
  • 在体内结果显示,Pulseq的变化明显减少.
  • Pulseq保持了扫描-重新扫描的可重复性,并在皮层/皮下区域减少了超过50%的FA/MD变异性.

结论:

  • Pulseq扩散序列有效地减少了幻影和体内数据的跨扫描器变异性.
  • 这种协调有利于多中心神经成像研究.
  • 提高神经成像研究的可复制性是一个关键的结果.