. The examinations were performed on an EPIQ
7 ultrasound machine (Philips) with an X5 transducer. The
images for volume and LVEF assessment were obtained by the
semiautomatic 2D method in four- and two-chamber apical
windows. Additionally, the apical three-chamber view was
obtained to calculate the GLS. Reference points were defined
in the mitral annulus (septal and lateral, anterior and inferior)
and in the apex at each of the windows. From these reference
points, the semiautomated aCMQ software (Philips) detected
the systolic and diastolic LV endocardial borders, providing
LVEF, ESV, and EDV estimates
Images were obtained by the automatic 3D method in
the four-chamber apical window during controlled apnea
to estimate LVEF and volumes. After acquisition, the images
were analyzed by the HeartModel software, which uses an
adaptive analytical algorithm to automatically detect the
interface between the endocardial borders and the blood.
At the touch of a single button on the HeartModel’s screen,
the software automatically calculated LVEF and volumes
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