Table 1.

The measured D-coefficients, T₁ and T₂ time constants^a

Phantomb	T1(ms)	T2(ms)	PGSE	1AFP	3AFP	5AFP	7AFP
Ph-1	36.1±1.1	16.7±0.2	0.68±0.03	0.70±0.02	0.73±0.02	0.78±0.02	0.87±0.02c
Ph-2	22.8±0.8	21.2±0.1	2.02±0.01	2.01±0.01		2.04±0.01
Ph-3	54.6±1.3	43.3±0.1	2.08±0.01	2.04±0.01		2.17±0.02
Ph-4	80.3±1.5	61.2±0.4	2.11±0.01	2.10±0.02	2.12±0.01	2.12±0.01	2.10±0.00
Ph-5	188.6±1.6	131.1±0.7	2.16±0.01	2.10±0.00		2.12±0.02
Ph-6	934.6±9.6	555.6±3.1	2.08±0.01	2.02±0.01		2.10±0.02

^aD-coefficients are in units of (10⁻³ mm²/s), $b_{ST}^{ct}$ and $b_y^{ct}$ cross-terms were applied for the D-coefficient calculations of PGSE and LASER sequences, respectively; the error represents the average standard deviation of two or three repeated measurements.

^bPhantoms were measured using the nAFP-AFS-LASER sequence, where n = 1, 3, 5, and 7 for Ph-1 and Ph-4, and n = 1, 5 for Ph-2, Ph-3, Ph-5, and Ph-6.

^cSignificantly different from the PGSE (ttest, p < 0.05).