Respiratory Bellows Revisited for Motion Compensation: Preliminary Experience for Cardiovascular MR
Respiratory Bellows Revisited for Motion Compensation: Preliminary Experience for Cardiovascular MR
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DOI：
10.1002/mrm.22687
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发表时间：
2011-04-01
影响因子：
3.3
通讯作者：
Peters, Dana C.
中科院分区：
文献类型：
--
作者：
Santelli, Claudio;Nezafat, Reza;Peters, Dana C.
对于许多心脏MR应用，呼吸波纹管门控是有吸引力的，因为它是广泛可用的，不破坏或依赖于成像。然而，它在心脏MR中的应用并不常见，因为其准确性尚未得到充分研究。在这里，在10名健康受试者，风箱和呼吸导航仪（NAV）与隔膜和心脏的位移同时监测，在单次拍摄成像。此外，使用回顾性重建以相同的效率比较波纹管门控和NAV门控冠状动脉MRI。NAV和腹波纹管与横膈膜有很强的线性关系（R = 0.90 +/- 0.05波纹管，R = 0.98 +/- 0.01 NAV，P < 0.001）和心脏（R = 0.89 +/- 0.06波纹管，R = 0.96 +/- 0.02 NAV，P = 0.004）;胸波纹管相关性较弱。波纹门控冠状动脉MRI图像质量与NAV门控相似，上级无门控（P < 0.01）。总之，波纹管提供了一种与NAV高度相关的呼吸监测器，适用于选定心脏MR应用中的呼吸补偿。Magn Reson Med 65：1098-1103，2011. (C)2010 Wiley-Liss，Inc.
For many cardiac MR applications, respiratory bellows gating is attractive because it is widely available and not disruptive to or dependent on imaging. However, its use is uncommon in cardiac MR, because its accuracy has not been fully studied. Here, in 10 healthy subjects, the bellows and respiratory navigator (NAV) with the displacement of the diaphragm and heart were simultaneously monitored, during single-shot imaging. Furthermore, bellows-gated and NAV-gated coronary MRI were compared using a retrospective reconstruction at identical efficiency. There was a strong linear relationship for both the NAV and the abdominal bellows with the diaphragm (R = 0.90 +/- 0.05 bellows, R = 0.98 +/- 0.01 NAV, P < 0.001) and the heart (R = 0.89 +/- 0.06 bellows, R = 0.96 +/- 0.02 NAV, P = 0.004); thoracic bellows correlated less strongly. The image quality of bellows-gated coronary MRI was similar to NAV-gated and superior to no-gating (P < 0.01). In conclusion, bellows provides a respiratory monitor which is highly correlated with the NAV and suitable for respiratory compensation in selected cardiac MR applications. Magn Reson Med 65:1098-1103, 2011. (C) 2010 Wiley-Liss, Inc.