TABLE 3.

Voxel‐based comparison of speed sampled inside the control volume at peak inflow in the LV phantom and comparison of median speed and interquartile range (in centimeters/second) (experiment 2)

Voxel‐based comparison at peak LV inflow	Mean difference ± SEM (cm/s)	p‐Value t‐test	Pearson correlation (p‐value)
4DEPI5_ro_LA–4DGRE_LA	−1.28 ± 0.12	<< 0.01	0.94 (p < 0.01)
4DEPI5_bp_LA–4DGRE_LA	−2.16 ± 0.09	<< 0.01	0.97 (p < 0.01)
4DEPI5_nbp_SA–4DGRE_LA	−1.01 ± 0.11	<< 0.01	0.95 (p < 0.01)
4DEPI5_ro_LA–4DEPI5_bp_LA	0.87 ± 0.12	<< 0.01	0.94 (p < 0.01)
4DEPI5_ro_LA–4DEPI5_nbp_SA	−0.27 ± 0.08	<< 0.01	0.97 (p < 0.01)
4DEPI5_bp_LA–4DEPI5_nbp_SA	−1.14 ± 0.12	<< 0.01	0.94 (p < 0.01)
Median speed (over all time points)	Median (IQR) (cm/s)	4DEPI/4DGRE ratio (over all time points)
4DEPI5_ro_LA	24.2 (15.6, 39.7)	0.945
4DEPI5_bp_LA	24.2 (15.6, 40.6)	0.954
4DEPI5_nbp_SA	24.8 (15.6, 42.9)	0.981
4DGRE_LA	25.4 (15.7, 42.1)

4DEPI5_ro_LA refers to EPI factor of 5 acquisition with the readout gradient aligned parallel to the main flow direction; 4DEPI5_bp_LA refers to EPI acquisition with the blip phase‐encoding gradient aligned parallel to the main flow direction; and 4DEPI5_nbp_SA refers to EPI acquisition with the readout and blip phase‐encoding gradient both perpendicular to the main flow direction. Abbreviation: IQR, interquartile range.