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心脏再同步治疗(cardiac resynchronization therapy, CRT)是晚期心力衰竭的重要治疗方法, 但按目前指南制定的标准, 仍有30%左右符合条件的患者对CRT无应答[1-2]。之前的研究发现, 从超声心动图(ultrasound cardiogram, UCG)得到的左室机械不同步参数可作为CRT应答的重要预测因子[1-3], 但最近报道的“CRT应答预测因子试验”研究表明, 在现有临床条件下, 组织多普勒成像(tissue Doppler imaging, TDI)和心肌应变率成像等UCG技术作为常规临床评价左室不同步的手段存在严重缺陷, 主要原因是UCG的准确性高度依赖于超声医师的技术水平, 导致其结果的重复性和可靠性较差[4]。所以, 目前迫切需要研究和评价新的、能够更好地测量左室不同步的技术方法。研究显示, 门控心肌灌注SPECT(gated myocardial perfusion SPECT, GMPS)相位分析技术能够用于CRT应答的预测。
门控心肌灌注SPECT相位分析技术评价心力衰竭患者左室不同步的价值
The value of phase analysis of gated myocardial perfusion SPECT to assess left ventricular dyssynchrony
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摘要: 心脏再同步治疗(CRT)是晚期心力衰竭的重要治疗方法,从超声心动图(UCG)得到的左室机械不同步参数可作为CRT应答的重要预测因子,但在现有临床条件下,UCG技术包括组织多普勒成像(TDI)和心肌应变率成像,其作为常规临床手段来评价左室不同步还存在严重缺陷。目前的研究显示,门控心肌灌注SPECT相位分析技术能够用于CRT应答的预测,与基于UCG的TDI相比,其优势在于技术操作的高度自动化和结果的高度可重复性。
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关键词:
- 体层摄影术, 发射型计算机, 单光子 /
- 门控血池显像 /
- 心脏再同步治疗 /
- 心力衰竭
Abstract: Cardiac resynchronization therapy(CRT)has shown benefits in patients with advanced heart failure.It has shown with ultrasound cardiogram(UCG)that the presence of left ventricular mechanical dyssynchrony is an important predictor for response to CRT.Therapy trial showed that under present conditions the current available UCG techniques including tissue Doppler imaging(TDI)and myocardial strain-rate imaging are not ready for routine clinical practice to assess left ventricular dyssynchrony.Research now shows that the advantages of gated myocardial perfusion SPECT over TDI are its automation, repeatability, and reproducibility that are very promising in improving prediction of CRT response in heart failure patients. -
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