心脏和呼吸运动提取MRI使用试点语音-一个患者的研究
Chong Chen1, Yingmin Liu2, Orlando P Simonetti2
1Department of Biomedical Engineering, The Ohio State University, Columbus, US. Chong.Chen@osumc.edu.
The international journal of cardiovascular imaging
|October 24, 2023
概括
飞行员音调 (PT) 在心血管MRI期间准确监测呼吸和心脏运动. 这种方法与图像衍生信号和可靠的心脏周期计时有很强的相关性,为临床扫描提供了有前途的工具.
科学领域:
- 心血管成像 - 心血管成像
- 医疗信号处理 医疗信号处理
- 磁共振成像 (MRI) 是一种磁共振成像技术.
背景情况:
- 精确监测呼吸和心脏运动对于高质量的心血管MRI至关重要.
- 现有的运动器件减少和信号提取方法可能是复杂的或侵入性的.
- 飞行员音调 (PT) 是一个集成在MRI线圈内用于信号生成的系统.
研究的目的:
- 评估从Pilot Tone (PT) 获得的心脏和呼吸信号的准确性和可靠性.
- 将PT的性能与ECG和生物矩阵 (BM) 呼吸传感器等既定方法进行比较.
- 评估PT在心血管MRI中实时运动监测的潜力.
主要方法:
- 23名接受心血管MRI的患者使用实时 (RT) 电影序列进行扫描.
- 飞行员音调 (PT) 信号被提取并追溯处理,以获得心脏和呼吸系统信息.
- 同步记录心电图和生物矩阵 (BM) 呼吸传感器数据进行比较分析.
主要成果:
- PT显示出强烈的正相关性 (0.95 ± 0.09) 与图像衍生的呼吸运动,超过BM (0.72 ± 0.24).
- PT心脏信号触发的中位数为21.8毫秒,心脏周期持续时间的平均绝对差异为21/23患者<5%.
- 没有观察到PT延迟或动与患者的BMI或心脏周期持续时间的显著依赖.
结论:
- 试点音调 (PT) 是一种可靠的方法,用于提取心血管MRI中的呼吸和心脏信号.
- 在临床扫描期间,PT为实时运动监测提供了一个有希望的,非侵入性的替代方案.
- 这些发现支持将PT整合到心脏MRI中,以提高图像质量和诊断精度.
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