Fig. 4From: Using a respiratory navigator significantly reduces variability when quantifying left ventricular torsion with cardiovascular magnetic resonanceMeasured end-expiratory diaphragm positions were used to define subject-specific maximum, middle, and minimum end-expiratory positions. The maximum diaphragm position was defined as being closer to the end-expiratory position while the minimum diaphragm position was defined as being closer to the end-inspiratory positionBack to article page