在0.55T的空气中,使用堆式螺旋外置bSSFP进行自由呼吸的3D肺通风映射
Ziwei Zhao1,2, Nam G Lee3, Bilal Tasdelen1
1Ming Hsieh Department of Electrical and Computer Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA.
Magnetic resonance in medicine
|September 17, 2025
概括
一种新的自由呼吸3D肺部成像技术提供了精确的区域肺呼吸地图. 这种方法显示出良好的可重复性和与现有技术如PREFUL.等技术的强烈相关性.
科学领域:
- 肺部成像扫描 肺部成像扫描
- 医学物理 医学物理
- 呼吸系统诊断 呼吸系统诊断
背景情况:
- 精确评估区域肺透气对于诊断和管理呼吸道疾病至关重要.
- 当前的自由呼吸技术可能在分辨率,精度或扫描时间方面存在局限性.
研究的目的:
- 开发和评估一种新的自由呼吸3D肺部成像技术.
- 为了生成高分辨率的结构图像和区域通风图.
- 评估新方法的可重复性和准确性与既有技术相比.
主要方法:
- 有自导航器的3D堆螺旋外入 (SOS外入) 平衡稳定状态自由前行 (bSSFP) 序列被设计为5分钟内2毫米的同位素分辨率.
- 使用先进的信号处理技术重建了呼吸器分辨率图像.
- 3D通风图是从非刚性图像记录中得出的,并与6名健康志愿者的2D PREFUL和全球潮体积进行比较.
主要成果:
- 该SOS外出技术产生了高质量的肺部图像,适用于通风估计.
- 区域通风测量显示出良好的重复性,相对差异低于10%.
- 通风图与2D PREFUL和全球潮体积 (R2 > 0.7,p < 0.001) 有很强的相关性.
结论:
- 开发的自由呼吸3D成像方法在一次5分钟的扫描中提供高质量的结构图像和通风图.
- 通风测量是灵敏的,一致的,并且与PREFUL和螺旋测量有很好的一致性.
- 这种技术为非侵入性呼吸评估提供了有前途的进步.
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