测量位置对使用四维流动心血管磁共振量化的直接腹吐量测量的影响
Adarsh Aratikatla1, Taimur Safder2, Gloria Ayuba2
1School of Medicine, The Royal College of Surgeons in Ireland, Dublin, Ireland.
概括
用4D流心血管磁共振 (CMR) 测量腹反体积的最佳位置是在喷气式飞机的峰值速度. 不同的测量位置显著影响吐体积的量化.
科学领域:
- 心血管成像 - 心血管成像
- 医学物理 医学物理
- 流体动力学 流体动力学
背景情况:
- 四维 (4D) 流动心血管磁共振 (CMR) 通过测量回体积 (RVol) 提供了通过直接量化 mitra regurgitation (MR) 的方法.
- 在4D流CMR中测量平面的最佳位置对于MR量化仍然未确定.
- 本研究研究了测量平面位置对RVol精度的影响,使用动量保存原理.
研究的目的:
- 系统地评估不同测量平面位置如何影响MR中的RVol量化.
- 为了确定最佳的测量平面位置,在4D流CMR中进行准确的RVol评估.
- 应用自由喷气的动量保存原理来确定理想的测量地点.
主要方法:
- 预计将招募预计进行CMR的MR患者.
- 在七个轴位置使用4D流CMR量化反喷流体积 (RVol喷流) 和动量 (RMom喷流).
- RVoljet与通过TTE和间接CMR方法测量的RVol的比较.
主要成果:
- 回体积 (RVoljet) 量化与测量平面位置有显著的变化,下游增加.
- 涌动量 (RMom喷气) 在下游位置稳定,表明趋同.
- 在不同平面的RVoljet和间接RVol测量之间观察到适度一致.
结论:
- 测量平面的位置对直接4D流CMR中的RVol定量产生了重大影响.
- 根据稳定的动量配置文件,MR喷气的峰值速度被提出为最佳测量位置.
- 使用4D流CMR精确量化RVol需要精确的平面定位.
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