Żygadło Agnieszka, Kaźnica-Wiatr Magdalena, Błaut-Jurkowska Justyna, Knap Klaudia, Lenart-Migdalska Aleksandra, Smaś-Suska Monika, Skubera Maciej, Urbańczyk-Zawadzka Małgorzata, Podolec Piotr, Olszowska Maria
John Paul II Hospital in Cracow, Poland: Department of Cardiac and Vascular Diseases with Intensive Cardiology Care Unit.
John Paul II Hospital in Cracow, Poland: Department of Radiology and Diagnostic Imaging.
Pol Merkur Lekarski. 2017 Oct 23;43(256):154-157.
Recently a lot of authors have been trying to determine the usefulness of 3-dimensional echocardiography (TTE 3D) in evaluation of ejection fraction and left ventricular volume, but few attempt to compare it to the current gold standard of cardiac magnetic resonance (CMR). 3D imaging technics allows to avoid errors caused by geometry of the heart chambers and foreshortened views. American Echocardiographic Guidelines recommend the use of 3-dimensional echocardiography in daily clinical practice.
The aim of the study was to establish clinical usefulness of automated 3D TTE software to calculate left ventricle ejection fraction (LVEF), left ventricle end diastolic volume (LVEDV) and left ventricle end systolic volume (LVESV), and to compare those measurements calculated in CMR and in 3D TTE.
The aim of the study was to establish clinical usefulness of automated 3D TTE software to calculate left ventricle ejection fraction (LVEF), left ventricle end diastolic volume (LVEDV) and left ventricle end systolic volume (LVESV), and to compare those measurements calculated in CMR and in 3D TTE.
The mean LVEF in 3D TTE was 65% +/- 12%; LVEDV 123 ml +/- 67 ml, LVESV 42 ml +/- 29 ml. The CMR LVEF in the study group was 61% +/- 9%, LVEDV 134 ml +/- 51ml, LVESV 54 ml +/- 33 ml. Wilcoxon rank test showed no difference between medians of the measurements, the correlation coefficient between LVEF in 3D TTE and CMR was R = 0.84 (p = 0.036). LVEF calculated in 3D TTE shows good correlation with LVEF computed in CMR. However good visualization of the endocardium, especially in the apex, is essential. The volume of left ventricle is underestimated in 3D TTE. In previous studies underestimation of LVEDV and LVESV was explained by exclusion of endocardial trabeculae from the left ventricle cavity in automated measurement.
The automated 3D TTE software allows simple, fast and precise evaluation of parameters of the left ventricle - especially LVEF. Automated 3D TTE software gives hope for the inclusion of 3D TTE in routine clinical practice due to its repeatability and easy use of the Heart Model software.
最近，许多作者一直在尝试确定三维超声心动图（3D TTE）在评估射血分数和左心室容积方面的实用性，但很少有人尝试将其与当前心脏磁共振成像（CMR）的金标准进行比较。三维成像技术可以避免因心腔几何形状和缩短视图导致的误差。美国超声心动图指南建议在日常临床实践中使用三维超声心动图。
本研究的目的是确定自动三维TTE软件在计算左心室射血分数（LVEF）、左心室舒张末期容积（LVEDV）和左心室收缩末期容积（LVESV）方面的临床实用性，并比较在CMR和三维TTE中计算出的这些测量值。
本研究的目的是确定自动三维TTE软件在计算左心室射血分数（LVEF）、左心室舒张末期容积（LVEDV）和左心室收缩末期容积（LVESV）方面的临床实用性，并比较在CMR和三维TTE中计算出的这些测量值。
三维TTE中的平均LVEF为65%±12%；LVEDV为123 ml±67 ml，LVESV为42 ml±29 ml。研究组的CMR LVEF为61%±9%，LVEDV为134 ml±51ml，LVESV为54 ml±33 ml。Wilcoxon秩和检验显示测量值的中位数之间无差异，三维TTE和CMR中LVEF的相关系数为R = 0.84（p = 0.036）。三维TTE中计算出的LVEF与CMR中计算出的LVEF显示出良好的相关性。然而，心内膜的良好可视化，尤其是在心尖部，至关重要。三维TTE中左心室容积被低估。在先前的研究中，LVEDV和LVESV的低估是由于在自动测量中左心室腔内的心内膜小梁被排除。
自动三维TTE软件允许对左心室参数进行简单、快速和精确的评估——尤其是LVEF。由于其可重复性和心脏模型软件的易用性，自动三维TTE软件为将三维TTE纳入常规临床实践带来了希望。
