Pulseq-CEST图书馆:准备和模拟的定义,示例数据和示例评估.
Alexander Liebeskind1,2, Jan Rüdiger Schüre3, Moritz Simon Fabian3
1Computer Vision Group, Technical University of Munich (TUM), Boltzmannstraße 3, 85748, Garching bei München, Germany. alexanderliebeskind@yahoo.com.
Magma (New York, N.Y.)
|March 27, 2025
概括
Pulseq-CEST图书馆通过提供可重现的序列和模拟来标准化化学交换和转移 (CEST) MRI. 这使得新的CEST成像技术的开发和验证速度更快.
科学领域:
- 磁共振成像技术 磁共振成像技术
- 生物医学工程 生物医学工程
- 医学物理 医学物理
背景情况:
- 化学交换和转移 (CEST) MRI 是广泛使用的,但由于复杂的参数依赖性,缺乏标准化.
- 射频 (RF) 脉冲,梯度和明显扩散系数 (ADC) 显著影响CEST成像结果.
- 需要一个共同的平台来确保可重复性,并促进CESTMRI的进步.
研究的目的:
- 介绍Pulseq-CEST库,这是CEST准备和模拟定义的标准化仓库.
- 为可重复的CESTMRI研究,快速原型设计和生成深度学习的in silico培训数据提供共同的基础.
- 解决CESTMRI采集和分析中缺乏标准化的问题.
主要方法:
- Pulseq-CEST库使用Bloch-McConnell方程在各种条件下建模CEST实验.
- 它集成了CEST准备序列,Bloch-McConnell参数集,模拟和评估脚本.
- 该框架允许通过保持某些参数不变而改变其他参数来进行系统测试.
主要成果:
- 通过比较使用幻影和模拟数据的胺质子转移加权 (APTw) 和水位移和B1 (WASABI) 协议来进行验证.
- 现实和模拟数据表明,光谱形状和局部峰值特征一致.
- 图书馆成功支持对新协议和样本数据的评估.
结论:
- Pulseq-CEST库提供了一个灵活的解决方案,用于标准化和原型化CESTMRI序列.
- 它促进了合作开发,并加速了新型和转移成像方法的发明和传播.
- 该图书馆的开源性质和可扩展性支持未来CEST,rNOE和MTC技术的进步.
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