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改进了用于扩散MRI的同时多切片EPI重建,使用调整的代相错误纠正感觉.

Mengqi Wang1, Yunlin Zhao1, Mengye Lyu2

  • 1Guangdong-Hongkong-Macau CNS Regeneration Institute, Key Laboratory of CNS Regeneration (Jinan University)-Ministry of Education, Guangdong Key Laboratory of Non-human Primate Research, Jinan University, Guangzhou, China.

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概括
此摘要是机器生成的。

我们开发了一种代重建方法,iPEC-SENSE与波波调节,以提高扩散MRI质量. 这种技术减少了同时进行多切片回声平面成像 (SMS-EPI) 的噪声和人工物,提高了扩散张力成像 (DTI) 的可靠性.

关键词:
平面图像成像的回声阶段错误纠正 阶段错误纠正规范化 规范化 规范化灵敏度编码的编码方式同时的多片切片.

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科学领域:

  • 磁共振成像是一种磁共振成像技术.
  • 图像重建 图像的重建
  • 神经成像是一种神经成像.

背景情况:

  • 同时的多切片回声平面成像 (SMS-EPI) 提高了扩散MRI效率和空间分辨率.
  • 现有的修复相位错误的SENSE (PEC-SENSE) 有效地消除了尼奎斯特的幽灵,但在高加速度因子时,它与噪声放大和文物作斗争.

研究的目的:

  • 引入一个代重建方法,将相位错误纠正SENSE (iPEC-SENSE) 与波形规范化集成在一起.
  • 解决和克服当前PEC-SENSE对SMS-EPI的重建中噪音放大和残留工件的限制.

主要方法:

  • 实现一个代重建框架,将PEC-SENSE与波形规范化 (iPEC-SENSE) 结合起来.
  • 评估该方法在抑制SMS-EPI扩散MRI数据中的噪声和人工物中的性能.

主要成果:

  • 规范化的iPEC-SENSE方法显示显著抑制了工件和噪音,从而提高了图像质量.
  • 改进的重建质量导致更可靠的扩散张力成像 (DTI) 分析,由降低的变化系数和测试-重新测试变化证明.
  • 该方法有效地缓解了SMS-EPI现有的PEC-SENSE技术固有的噪声放大问题.

结论:

  • 拟议的 iPEC-SENSE 方法为使用 SMS-EPI 的高质量扩散核磁共振提供了一个强大的解决方案.
  • 这种方法保持了消除尼奎斯特幽灵的能力,同时提高了扩散MRI的精度和可重现性.
  • 通过提供更准确和可靠的并行成像重建,iPEC-SENSE增强了先进神经成像应用的潜力.