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首页> 外文期刊>Cardiovascular Ultrasound >Three-dimensional echocardiography using single-heartbeat modality decreases variability in measuring left ventricular volumes and function in comparison to four-beat technique in atrial fibrillation
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Three-dimensional echocardiography using single-heartbeat modality decreases variability in measuring left ventricular volumes and function in comparison to four-beat technique in atrial fibrillation

机译：与四搏技术在心房颤动中相比，使用单心搏模式的三维超声心动图减少了测量左心室容积和功能的可变性

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Background Three dimensional echocardiography (3DE) approaches the accuracy of cardiac magnetic resonance in measuring left ventricular (LV) volumes and ejection fraction (EF). The multibeat modality in comparison to single-beat (SB) requires breath-hold technique and regular heart rhythm which could limit the use of this technique in patients with atrial fibrillation (AF) due to stitching artifact. The study aimed to investigate whether SB full volume 3DE acquisition reduces inter- and intraobserver variability in assessment of LV volumes and EF in comparison to four-beat (4B) ECG-gated full volume 3DE recording in patients with AF. Methods A total of 78 patients were included in this study. Fifty-five with sinus rhythm (group A) and 23 having AF (group B). 4B and SB 3DE was performed in all patients. LV volumes and EF was determined by these two modalities and inter- and intraobserver variability was analyzed. Results SB modality showed significantly lower inter- and intraobserver variability in group B in comparison to 4B when measuring LV volumes and EF, except for end-systolic volume (ESV) in intraobserver analysis. There were significant differences when calculating the LV volumes (p Conclusion Single-beat three-dimensional full volume acquisition seems to be superior to four-beat ECG-gated acquisition in measuring left ventricular volumes and ejection fraction in patients having atrial fibrillation. The variability is significantly lower both for ejection fraction and left ventricular volumes.
机译：背景技术三维超声心动图（3DE）在测量左心室（LV）体积和射血分数（EF）方面接近心脏磁共振的准确性。与单搏（SB）相比，多搏方式需要屏气技术和规则的心律，这可能会由于缝合伪影而限制该技术在房颤（AF）患者中的使用。这项研究的目的是调查与AF患者使用四拍（4B）ECG门控的全体积3DE记录相比，SB全体积3DE采集是否能降低观察者之间和观察者内部对LV体积和EF评估的变异性。方法本研究共纳入78例患者。五十五例窦性心律（A组）和23例有AF（B组）。所有患者均进行4B和SB 3DE检查。左室容量和EF是由这两种方式确定的，并观察者之间和观察者之间的变异性进行了分析。结果在测量左心室容积和EF时，与4B相比，B组的观察者间和观察者内变异性明显低于4B，观察者内分析中收缩末期容积（ESV）除外。在计算左心室容积时，存在显着差异（p结论在测量房颤患者的左心室容积和射血分数方面，单次搏动三维全容积采集似乎优于四次心电图门控采集。射血分数和左心室容积均显着降低。

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