From: Pediatric cardiovascular interventional devices: effect on CMR images at 1.5 and 3 Tesla
 | 2D balanced-SSFP dynamic 2D balanced-SSFP cine -CMR | 3D-GRE dynamic time-resolved MRA | Phase-contrast 2D-GRE | 3D-GRE high-resolution MRA | ||||
---|---|---|---|---|---|---|---|---|
 | 1.5T | 3T | 1.5T | 3T | 1.5T | 3T | 1.5T | 3T |
TR | 4.0 | 3.61 | 3.05 | 3.05 | 9.4 | 9.4 | 3.18 | 3.18 |
TE | 1.73 | 1.52 | 1.28 | 1.28 | 2 | 2 | 1.31 | 1.31 |
Flip angle | 60 | 80 | 22 | 25 | 30 | 30 | 19 | 30 |
Pixel bandwidth | 914 | 977 | 751 | 751 | 554 | 554 | 610 | 610 |
Matrix | 304×243 | 320×240 | 512×347 | 512×347 | 192×192 | 192×192 | 512×358 | 512×358 |
In-plane resolution (mm2) | 1 × 1.25 | 1 x 1.33 | 0.61 × 0.93 | 0.61 x 0.93 | 1.66 × 1.66 | 1.66 × 1.66 | 0.68 × 0.98 | 0.68 × 0.98 |
Slice thickness | 2 | 2.5 | 1 | 1 | 5.5 | 5.5 | 1 | 1 |
Grappa acceleration factor | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |