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自由呼吸多切片共注册心脏T1,T2和ADC映射与自旋回声回声平面成像
Dingheng Mai1,2, Danielle Kara1,3, Yuchi Liu4
1Cardiovascular Innovation Research Center, Heart Vascular Thoracic Institute, Cleveland Clinic, Cleveland, Ohio, USA.
Magnetic resonance in medicine
|November 15, 2025
概括
一种新的自由呼吸心脏MRI方法产生共同注册的T1,T2和明显扩散系数 (ADC) 地图. 这种技术可以在5分钟内进行综合的多对比组织表征.
科学领域:
- 心血管成像 - 心血管成像
- 磁共振成像是一种磁共振成像技术.
- 生物医学工程 生物医学工程
背景情况:
- 心脏MRI对于诊断和监测心脏病状况至关重要.
- 精确的组织特征需要多参数映射 (T1,T2,ADC).
- 当前的方法往往需要屏住呼吸,限制了适用性.
研究的目的:
- 开发一种新的自由呼吸方法,用于同时进行多切片心脏T1,T2和ADC映射.
- 使用单拍旋回声回声平面成像 (SE-EPI) 进行有效的数据采集.
- 实现共同注册的地图,用于综合组织分析.
主要方法:
- 在自由呼吸期间使用SE-EPI获得了五片T1,T2和扩散权重图像.
- 采用交叉切片采集,反转恢复,多种回声时间和运动补偿扩散梯度.
- 将所有图像注册为目标,并对共同注册的地图进行参数调整.
主要成果:
- 幻影测量显示出与参考技术 (R2 > 0.96) 的良好一致.
- 志愿者研究显示了可比的ADC值,但T1和T2与参考方法相比有显著差异.
- 质量评估表明,与参考相比,T1/T2的地图质量得分较低,而ADC地图是可比的.
- 在心肌粉症和心肌梗塞模型中检测到的心肌异常与传统发现一致.
结论:
- 开发的自由呼吸方法可以在心脏MRI中快速,共同注册的T1,T2和ADC映射.
- 在不到五分钟的时间内便于进行综合的多对比组织表征.
- 未来优化地图质量和扩展临床应用是有必要的.
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