Basic characteristics of included study populations and MRI technique used by included studies
| Basic characteristics of included study populations | |
| Characteristic | Pooled mean (95% CI) |
| Age, years | 59.9 (95% CI: 59.0 to 60.7) |
| Male, % of patients | 81.7 (95% CI: 79.3 to 83.9) |
| MRI technique used by included studies | |
| Technical parameter | % of included studies (n) |
| Timing of MRI | |
| 3–7 days after STEMI | 79% (30) |
| 1–2 days after STEMI | 21% (8) |
| T2-weighted MRI sequence* | |
| T2-weighted dark-blood TSE/FSE with IR (STIR) | 90% (34) |
| T2-prepared bright-blood single-shot balanced SSFP | 11% (4) |
| Hybrid TSE-SSFP (ACUTE) | 5% (2) |
| BLADE k-space coverage for dark-blood TSE | 3% (1) |
| T1-weighted late gadolinium enhancement MRI sequence | |
| PSIR using segmented FLASH readout (SPGR) | 97% (37) |
| IR with single-shot SSFP | 3% (1) |
| T2-weighted MRI interpretation | |
| Signal intensity>2 SD above remote myocardium | 66% (25) |
| Manual contouring | 29% (11) |
| FWHM algorithm | 5% (2) |
| T1-weighted late gadolinium enhancement MRI interpretation† | |
| Signal intensity>5 SD above remote myocardium | 37% (14) |
| Signal intensity>2 SD above remote myocardium | 16% (6) |
| Signal intensity>3 SD above remote myocardium | 3% (1) |
| Manual contouring | 29% (11) |
| FWHM algorithm | 11% (4) |
| Heiberg’s method | 8% (3) |
*One included study compared four T2-weighted MRI sequences.
†One included study applied two T1-weighted late gadolinium enhancement MRI interpretation methods.
ACUTE, acquisition for cardiac unified T2 oedema; FLASH, fast low angle shot; FSE, fast spin echo; FWHM, full width at half maximum; IR, inversion recovery; PSIR, phase-sensitive inversion recovery; SPGR, spoiled gradient echo; SSFP, steady-state free precession; STEMI, ST-segment elevation myocardial infarction; STIR, short-tau inversion recovery; TSE, turbo spin echo.