Skip to main content

Table 1 T1, T2 and LGE signal intensity characteristics of acute and chronic myocardial infarction at 1.5T and 3T

From: Contrast-free T1 mapping at 3T can characterize chronic myocardial infarctions with high diagnostic accuracy

Field Strength 3T 1.5T
Time Post-MI Day 7 Month 4 Day 7 Month 4
Tissue Type Remote Infarcted Remote Infarcted Remote Infarcted Remote Infarcted
T1 (ms) 1230 ± 63 1563 ± 154 1257 ± 138 1485 ± 139 924 ± 72 1104 ± 108 976 ± 80 1060 ± 116
T2 (ms) 46 ± 4 64 ± 9 44 ± 4 46 ± 3 50 ± 4 69 ± 5 49 ± 5 51 ± 6
%Change in T1 with respect to Remote 26 ± 8 19 ± 7 14 ± 8 12 ± 6
%Change in LGE signal intensity with respect to Remote 728 ± 484 790 ± 513 376 ± 192 409 ± 163
Sensitivity of Contrast-Free T1 maps 94% 95% 84% 58%
Specificity of Contrast-Free T1 maps 94% 97% 74% 78%