Table 3.

Comparison of IP and SPURS initialization methods on a single scanner over 19 patients. Initialization time and ROI values for liver proton density fat fraction (PDFF), R2* and susceptibility are tabulated. p-value for the paired t-test and coefficient of determination (r²), and slope (k) for linear regression are tabulated for ROI data.

Patient subject #	Initialization (min)		PDFF (%)		R2* (Hz)		QSM (ppm)
	IP	SPURS	IP	SPURS	IP	SPURS	IP	SPURS
1	7	60	2.8	2.8	171	171	0.37	0.39
2	7	23	2.3	2.3	245	245	0.44	0.44
3	7	19	2.4	2.4	80	80	0.25	0.25
4	7	25	1.5	1.5	45	45	0.09	0.09
5	7	24	1.9	1.9	33	33	0.10	0.10
6	8	25	2.5	2.5	37	37	0.10	0.10
7	8	35	8.6	8.4	388	401	0.57	0.59
8	7	31	1.7	1.7	28	28	0.07	0.07
9	7	43	1.6	1.6	140	140	0.32	0.35
10	6	32	1.6	1.6	38	38	0.14	0.14
11	11	76	5.8	5.8	23	23	0.09	0.08
12	7	58	2	2	31	31	0.04	0.04
13	7	72	1.5	1.5	25	25	0.04	0.03
14	8	43	3.2	3.2	27	27	0.04	0.04
15	9	38	1	1	29	29	0.08	0.08
16	7	46	5.8	5.8	225	225	0.39	0.39
17	8	50	1.2	1.2	30	30	0.05	0.05
18	8	31	4.9	4.9	241	241	0.44	0.44
19	7	27	1.9	1.9	66	66	0.16	0.16
p-value			0.99		0.98		0.96
r2			1.00		1.00		1.00
k			0.98		1.02		1.03