Table 1 Imaging parameters for breath-holding (BH-mTFE) and free-breathing (FB-mTFE) sequences
From: Free-breathing T2* mapping for MR myocardial iron assessment at 3 T
BH-mTFE | FB-mTFE | |
|---|---|---|
Number of slices | 1 | 1 |
Acquisition matrix | 124 × 119 | 124 × 122 |
Resolution (mm) | 2.4 × 2.5 × 8 | 2.4 × 2.4 × 8 |
Field of view (mm) | 297 × 297 | 297 × 292 |
Slice thickness (mm) | 8 | 8 |
k-space sampling | Cartesian | Cartesian |
Flip angle (degree) | 25 | 25 |
Echo time (ms) | 1.3 | 1.3 |
∆ Echo time (ms) | 1.2 | 1.2 |
Repetition time (ms) | 21 | 22 |
Number of excitations | 1 | 8 |
Electrocardiography-gating | Cardiac triggered | Cardiac triggered |
Respiration | Breath hold ≈ 15 sec | Respiratory trigger |
Duration | 12 s | 2 min, 11 s |