Table 2. Comparison of SNR between Double-Dose 1.5T and Single-Dose 3T MR Images (n = 16) .

	1.5T Double Dose	3T Single Dose	P
SNRinfarct
10 minutes	38.6 ± 9.8	48.1 ± 12.2	0.025
15 minutes	40.9 ± 11.7	45.7 ± 10.5	0.188
20 minutes	43.0 ± 14.0	44.6 ± 9.3	0.712
SNRnormal
10 minutes	5.1 ± 1.1	6.8 ± 2.9	0.049
15 minutes	5.7 ± 1.7	6.9 ± 3.4	0.197
20 minutes	6.5 ± 2.1	7.3 ± 3.7	0.343
SNRLVC
10 minutes	31.6 ± 8.9	28.9 ± 14.3	0.383
15 minutes	29.1 ± 10.5	24.9 ± 9.4	0.209
20 minutes	30.8 ± 10.0	22.5 ± 9.3	0.012

Data are presented as means ± SDs. LVC = left ventricular cavity, MR = magnetic resonance, SNR = signal-to-noise ratio