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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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快速定量MRI:螺旋获取匹配基于算法 (SAMBA) 强大的T1和T2映射.

Mireia Perera-Gonzalez1, Christina J MacAskill2, Heather A Clark3

  • 1Department of Bioengineering, Northeastern University, Boston MA, USA.

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概括

一种名为SAMBA的新的快速定量MRI (qMRI) 方法被开发用于临床前扫描仪. 桑巴显著减少了评估MRI对比剂的扫描时间,而不会牺牲准确度.

关键词:
量化MRI是指数量化的MRI.基于匹配的螺旋获取算法 (SAMBA)低场临床前MRI低场临床前MRI

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科学领域:

  • 生物医学成像技术 生物医学成像技术
  • 磁共振成像 (MRI) 是一种磁共振成像技术.
  • 定量核磁共振 (qMRI) 是一种量子核磁共振.

背景情况:

  • 传统的MRI是定性和主观的.
  • 定量MRI (qMRI) 在临床前研究中提供客观评估.
  • 低场 (≤3.0T) 临床前QMRI对于评估人类场强度的对比剂至关重要,但面临着长时间扫描和运动文物等挑战.

研究的目的:

  • 开发用于临床前3.0TMRI扫描仪的快速qMRI方法.
  • 为了使MRI对比剂的快速和定量评估.
  • 克服现有的低场qMRI技术的局限性.

主要方法:

  • 介绍了一种新的快速qMRI方法,将螺旋获取与基于匹配算法 (SAMBA) 结合起来.
  • 使用最小方程拟合 (SELSF) 的金标准旋回回声MRI方法与SAMBA的比较.
  • 为了验证该方法,进行了体外幻影研究.

主要成果:

  • 与传统方法相比,SAMBA的扫描时间显著缩短.
  • 该方法保持了测量准确性和可重复性.
  • 尽管采集速度加快,但数据质量没有受到损害.

结论:

  • 开发的SAMBA方法为临床前扫描仪上的定量MRI提供了快速而准确的方法.
  • 这种技术有效用于评估MRI对比剂.
  • 结果支持SAMBA在未来的体内应用,用于先进的化学探针研究.