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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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在0.55 T下使用多度渐变回声序列的髓水成像.

Jessica Schäper1,2, Oliver Bieri1,2

  • 1Department of Biomedical Engineering, University of Basel, Basel, Switzerland.

Magnetic resonance in medicine
|November 27, 2023
PubMed
概括

在0.55 T的多渐变回声 (mGRE) 髓水成像显示出比更高的场强度更好的结果的希望. 这种技术是可行的,并产生了改进的髓水分地图.

科学领域:

  • 神经成像是一种神经成像.
  • 生物物理学的生物物理.

背景情况:

  • 髓水成像 (MWI) 对于评估白质完整性至关重要.
  • 较高的磁场强度 (例如,3 T) 通常用于MWI.
  • 在较高场强度的MWI中存在挑战,包括信号对噪声比和易受影响的工件.

研究的目的:

  • 评估3D多渐变回声 (mGRE) 序列的可行性和潜力,用于0.55T的体内髓水成像.
  • 为了比较0.55T生成的髓水分数 (MWF) 地图的质量,与3T获得的地图进行比较.

主要方法:

  • 采用3DmGRE序列扫描了四名健康志愿者的大脑,在0.55T和3T时.
  • 在qMRLab软件中使用非负最小平方 (NNLS) 算法计算了髓水分 (MWF).
  • 在两种场强度之间进行了MWF地图质量和单声素适配精度的视觉比较.

主要成果:

  • 在0.55 T时获得的髓水分数值与先前报告的在更高场强度时的发现一致.
  • 在0.55T时生成的MWF地图显示,与3T时生成的MWF地图相比,质量显著提高.
  • 在0.55 T获得的数据更好地通过指数模型表示,提高了NNLS算法的多指数假设的准确性.

结论:

关键词:
大脑大脑大脑的大脑大脑低距离的低场运动.mGRERE 在线观看骨髓蛋白是什么意思 骨髓蛋白是什么意思骨髓水成像学 骨髓水成像学

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  • 使用0.55 T的mGRE进行髓水成像是可行的.
  • 这种较低的场强度显示出与较高的场强度相比,产生更优异的结果的潜力.
  • 这些发现表明,0.55 T mGRE是体内髓水成像的可行和潜在的优势方法.