Fig. 1From: Is it best to reFOCUS on basic echocardiography in the emergency department?Angle correction (circles) in pulsed-wave Doppler on echocardiography, a practice that is not recommended and was performed in the study of Betcher et al. [1]. a Left ventricle outflow-tract flow; b transmitral flow. Alignment between the flow and the Doppler must be performed manually and thus requires an excellent technique, without electronic angle correctionBack to article page