TABLE 1.
Acquisition parameters for the three sets of data collected phantom and each human volunteer
| Hyperfine multi‐TE T2 | TE #1 | TE #2 | TE #3 | TE #4 | TE #5 |
|---|---|---|---|---|---|
| Axial FOV (X × Y × Z)cm3 | 16.8 × 20.4 × 18.0 | 16.8 × 20.4 × 18.0 | 16.8 × 20.4 × 18.0 | 16.8 × 20.4 × 18.0 | 16.8 × 20.4 × 18.0 |
| Matrix (X × Y × Z) | 112 × 136 × 36 | 112 × 136 × 36 | 112 × 136 × 36 | 112 × 136 × 36 | 112 × 136 × 36 |
| Readout direction | Y (AP) | Y (AP) | Y (AP) | Y (AP) | Y (AP) |
| In‐plane resolution (mm × mm) | 1.5 × 1.5 | 1.5 × 1.5 | 1.5 × 1.5 | 1.5 × 1.5 | 1.5 × 1.5 |
| Slice thickness (mm) | 5 | 5 | 5 | 5 | 5 |
| TR (ms) | 2200 | 2200 | 2200 | 2200 | 2200 |
| TE (ms) | 60 | 100 | 150 | 200 | 300 |
| ETL | 12 | 20 | 30 | 40 | 60 |
| Acquisition time (min) | 13:37 | ||||
| Single‐orientation multi‐TE | TE #1 | TE #2 | TE #3 | ||
| Axial FOV (X × Y × Z) cm3 | 18.0 × 21.9 × 18.0 | 18.0 × 21.9 × 18.0 | 18.0 × 21.9 × 18.0 | ||
| Matrix (X × Y × Z) | 120 × 146 × 36 | 120 × 146 × 36 | 120 × 146 × 36 | ||
| Readout direction | Y (AP) | Y (AP) | Y (AP) | ||
| In‐plane resolution (mm × mm) | 1.5 × 1.5 | 1.5 × 1.5 | 1.5 × 1.5 | ||
| Slice thickness (mm) | 5 | 5 | 5 | ||
| TR (ms) | 2000 | 2000 | 2000 | ||
| TE (ms) | 122.8 | 182.4 | 241.6 | ||
| ETL | 20 | 30 | 40 | ||
| Acquisition time (min) | 5:58 | 4:00 | 3:00 | 12:58 | |
| Multiple‐orientation multi‐TE | TE #1 | TE #2 | TE #3 | ||
| Axial FOV (X × Y × Z) cm3 | 18.0 × 21.9 × 18.0 | ||||
| Sagittal FOV (X × Y × Z) cm3 | 18.0 × 21.9 × 18.0 | ||||
| Coronal FOV (X × Y × Z) cm3 | 18.0 × 18.0 × 20 | ||||
| Matrix (X × Y × Z) | 120 × 146 × 36 | 120 × 146 × 36 | 120 × 120 × 40 | ||
| Readout direction | Y (AP) | Y (AP) | Z (SI) | ||
| In‐plane resolution (mm × mm) | 1.5 × 1.5 | 1.5 × 1.5 | 1.5 × 1.5 | ||
| Slice thickness (mm) | 5 | 5 | 5 | ||
| TR (ms) | 2000 | 2000 | 2000 | ||
| TE (ms) | 122.8 | 182.4 | 241.6 | ||
| ETL | 20 | 30 | 40 | ||
| Acquisition time (min) | 4:11 | 4:00 | 3:30 | 11:41 | |