Vosters, R.P.L.

study right ventricle diameter heart output value volume septal weight measurement m-mode intraventricular septal thickness intraventricular recording birth fetus ultrasound antenatal right ventricle thickness stroke volume period change cycle phase circulation transducer table intraventricular septum septum chapter interval motion increase delivery function end-systolic beat-to-beat interval end-diastolic patient growth technique variation systole rudolph pregnancy result blood error end-systolic phase beat-to-beat structure ejection fraction ratio heart rate stroke regression line 10 minutes parameter growth retardation minute curve system m-mode recording 1.0 septal thickness relationship pattern antenatal-neonatal study gestation heymann ejection sound fraction geometry percentile valve valve leaflets plane