Using a respiratory navigator significantly reduces variability when quantifying left ventricular torsion with cardiovascular magnetic resonance

Table 1 Mean (± standard deviation) of torsion across the volunteers within each experiment

Method (experiment)	Torsion (°/cm)	p-value
Experiment 1^a
Enforced inconsistent positions	3.4 ± 0.4	0.85
Consistent positions with navigator	3.4 ± 0.2	0.85
Experiment 2
Breath-holds	3.6 ± 0.3	0.32
Consistent positions with navigator	3.5 ± 0.2	0.32

ISSN: 1532-429X