Table 1 Typical CMR imaging parameters for in vivo scans
In vivo scan | Respiratory motion compensation | Imaging technique | Acquired / reconstructed spatial resolution (mm3) | TR / TE (ms) | Flip angle (deg) | Receiver bandwidth (Hz/pixel) | Nominal acquisition time, range (min / heartbeats) | K-lines per heartbeat (min–max) | Acceleration factor (GRAPPA) | Other parameters |
|---|---|---|---|---|---|---|---|---|---|---|
Pre Gd-contrast | ||||||||||
IR T1w 3D 2RR | Navigator | Segmented bSSFP | 1.0 × 1.0 × 3.0–0.9 × 0.9 × 3.0/1.0 × 1.0 × 1.5–0.9 × 0.9 × 1.5 | 4.80 / 2.40 | 90 | 496 | 23.8–31.6 / 2 × 715–950 | 12–16 | None | 2RR gating, TI = 550–600 ms |
T2w 3D | Navigator | Segmented bSSFP | 0.9 × 0.9 × 3.0 /0.9 × 0.9 × 1.5 | 4.40 / 2.20 | 90 | 676 | 14.0–18.7 / 840–1120 | 12–16 | None | T2Prep TE = 45 ms |
T1 Mapping SAX Stack | Breath-hold | SASHA | 1.63 × 1.63 × 8 | 3.15 / 1.28 | 80 | 543 | 0.28 / 17 | 72 | 2 | 17 Images/map, 8 × Tsat = 104 ms; 4xTsat = 250 ms 4 × Tsat = 350 ms 7/8 partial Fourier |
Single Shot IR T1w 2D 2RR | Free-breathing | Segmented bSSFP | 2.51 × 1.88 × 6 / 0.94 × 0.94 × 6 | 4.91 / 1.92 | 90 | 250 | 2 beats / 2 | 53 | 2 | TI = 500–600 ms Assymetric readout |
Post Gd-contrast | ||||||||||
EGE 3D | Navigator | Segmented bSSFP | 1.5 × 1.5 × 6 /1.5 × 1.5 × 3 | 4.22 / 2.11 | 90 | 501 | 5.6–7.5 / 336–450 | 12–16 | None | TI: 250 ms |
LGE 3D | Navigator | Segmented bSSFP | 0.9 × 0.9 × 3.0 /0.9 × 0.9 × 1.5 | 4.80 / 2.40 | 90 | 496 | 16.8–22.4 / 1010–1346 | 12–16 | None | TI: 300 ms |