Table 3.

Global absolute flow millilitres per minute per gram comparisons

	n pairs	Difference (SD)	Paired t-test P-value	Pitman–Morgan P-value	COV
Different day
Different scanner
2D DST—United	56	0.006 (0.391)	0.482	0.321	±23%
United—3D DMI	49	−0.021 (0.339)	0.535	0.476	±21%
Same scanner
3D DMI—3D DMI	24	−0.088 (0.268)	0.028	0.334	±17%
United—United	25	0.038 (0.196)	0.181	0.622	±12%
Different-day combined comparison	154	0.028 (0.330)	0.136	0.419	±20%
Same day
Different scanner
2D DST—United	17	−0.111 (0.250)	0.087	0.375	±26%
Same scanner
3D DMI—3D DMI	24	0.039 (0.214)	0.213	0.492	±14%
United—United	25	−0.050 (0.178)	0.053	0.436	±11%
Same-day combined comparison	66	0.014 (0.207)	0.464	0.401	±14%