Table 3. Comparison of CNR between Double-Dose 1.5T and Single-Dose 3T MR Images (n = 16).

	1.5T Double Dose	3T Single Dose	P
CNRinfarct-normal
10 minutes	33.5 ± 9.38	41.3 ± 11.1	0.047
15 minutes	35.2 ± 10.9	38.8 ± 9.5	0.315
20 minutes	36.5 ± 13.2	37.3 ± 8.6	0.848
CNRinfarct-LVC
10 minutes	7.03 ± 4.4	19.3 ± 11.4	< 0.001
15 minutes	11.8 ± 6.9	20.8 ± 9.1	0.003
20 minutes	12.2 ± 7.2	22.1 ± 8.6	0.001

Data are presented as means ± SDs. CNR = contrast-to-noise ratio