Table 1. Free-breathing LAX acquisitions versus breath-hold and free-breathing SAX acquisitions for resting LV volumes and function, and heart rate.

Parameter	SAX breath-hold	LAX free-breathing	SAX free-breathing	Breath-hold SAX vs free-breathing LAX	Free-breathing SAX vs free-breathing LAX	Breath-hold SAX vs free-breathing SAX
End-diastolic (mL)	140±20	142±20	139±20	0.89	0.93	0.88
End-systolic volume (mL)	48±8	48±8	47±8	0.92	0.96	0.92
Stroke volume (mL)	92±15	94±15	92±15	0.84	0.91	0.84
Ejection fraction (%)	65±4	66±4	66±4	0.83	0.92	0.80
Cardiac output (L/min)	5.5±1.2	6.2±1.1	6.1±1.2	0.76	0.79	0.67
Heart rate (bpm)	61±10	66±11	67±11	0.83	0.85	0.71

Data are mean ± standard deviation. Abbreviations: SAX, short-axis; LAX, long-axis; LV; left ventricular; ICC, intraclass correlation; GLS, global longitudinal strain.