. Author manuscript; available in PMC: 2015 Aug 1.

Published in final edited form as: Magn Reson Med. 2013 Sep 4;72(2):534–545. doi: 10.1002/mrm.24927

Table 2.

Comparison between ATH and ATHX in terms of accuracy and precision (SNR=20). Accuracy was defined as the percent difference from the true value and precision as coefficient of variance. Accuracy and precision of each parameter were measured from the data sets shown in Figure 4 and Figure 5 where the selected parameter was at the nominal value (K^trans = 0.30 min⁻¹, v_e = 0.15, v_b = 0.06, and τ_i = 0.2 s).

	ATH		ATHX
	Error (%)	CV (%)	Error (%)	CV(%)
K^trans (min⁻¹)	−13.14 ± 10.37	15.27 ± 6.22	−0.11 ± 9.64^*	27.08 ± 9.35^*
v_e	−5.15 ± 5.38	10.79 ± 4.50	−1.73 ± 8.29	19.26 ± 7.55^*
v_b	−37.29 ± 13.25	50.68 ± 14.37	−7.04 ± 25.02^*	58.26 ± 27.65
τ_i (s)	—	—	54.22 ± 67.95	80.63 ± 19.00
τ_b (s)	—	—	−81.94 ± 35.37	179.38 ± 36.19
PS	−5.63 ± 11.85	23.43 ± 32.80	9.50 ± 8.98^*	55.50 ± 37.95^*
F_p	−44.81 ± 7.66	43.17 ± 8.30	−45.55 ± 8.03	55.79 ± 26.76^*
T_c	14.29 ± 34.14	74.85 ± 19.55	79.97 ± 58.48^*	66.45 ± 28.09^*

represents a significant difference (p < 0.05) between ATH and ATHX.