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Archives of cardiovascular diseases
Volume 110, n° 11
pages 580-589 (novembre 2017)
Doi : 10.1016/j.acvd.2016.12.015
Received : 29 August 2016 ;  accepted : 21 December 2016
Performance of new automated transthoracic three-dimensional echocardiographic software for left ventricular volumes and function assessment in routine clinical practice: Comparison with 3 Tesla cardiac magnetic resonance
Performance d’un nouveau logiciel automatisé d’évaluation des volumes et de la fonction ventriculaire gauches en échocardiographie tridimensionnelle transthoracique en routine clinique. Comparaison avec l’IRM cardiaque 3 Tesla
 

Figure 1




Figure 1 : 

Linear regression (left) and Bland-Altman (right) diagrams of comparison between three-dimensional transthoracic echocardiography using the HeartModelA.I. (HM) with 80–40 border settings and cardiac magnetic resonance (CMR) for the assessment of: (A) left ventricular end-diastolic volume (EDV); (B) left ventricular end-systolic volume (ESV); and (C) left ventricular ejection fraction (EF). SD: standard deviation.


Figure 2




Figure 2 : 

Interobserver, intraobserver and test-retest variability for: (A) left ventricular end-diastolic volume (EDV); (B) left ventricular end-systolic volume (ESV); and (C) left ventricular ejection fraction (EF), using linear regressions. HM: HeartModelA.I..


Figure 3




Figure 3 : 

Mountain plot analyses between different default settings of the automated border detection of the HeartModelA.I. (HM 90–50, HM 80–40 and HM 70–30) for the measurement of left ventricular end-diastolic volume (EDV) compared with cardiac magnetic resonance (CMR). A. For HM 80–40 and HM 90–50 settings. B. For HM 80–40 and HM 70–30 settings. C. For HM 80–40 and HM 90–50 settings in the 16 patients with LVEF50%. For HM 80–40, HM 90–50 and HM 70–30 settings, median values were 16, –1 and 21, respectively. For HM 90–50, the mountain was almost centered over zero (unbiased) with, however, a larger negative tail, caused by the frequent overestimation of EDV over CMR in the total population. In the 16 patients with LVEF50%, the mountain was centered over zero without major overestimation.


Figure 4




Figure 4 : 

Median absolute percentage error for left ventricular end-diastolic volume (EDV) and left ventricular ejection fraction (LVEF/EF) measurement using different default settings of the automated border detection of the HeartModelA.I. (HM 90–50, HM 80–40 and HM 70–30).

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