Table 1 MR imaging parameters
TR/TE (ms) | Direction of frequency encoding | Section thickness (mm) | Inter-slice gap (mm) | FOV (mm) | Matrix | |
|---|---|---|---|---|---|---|
Axial T1-WI (TSE) | 10/5 | AP | 8 | .5 | 420 × 325 × 306 | 288 × 224 |
Coronal T1-WI (TSE) | 10/5 | R/L | 8 | .5 | 425 × 425 × 208 | 288 × 224 |
Axial T2-WI (TSE) | 644/80 | AP | 8 | 1.5 | 420 × 325 × 306 | 288 × 224 |
Coronal T2-WI (TSE) | 644/80 | R/L | 8 | 1.5 | 425 × 425 × 208 | 288 × 224 |
Sagittal T2-WI (TSE) | 644/80 | AP | 8.8 | 1.5 | 400 × 299 × 284 | 288 × 224 |
STIR-WI | 1.6/20 | AP | 10 | 1 | 450 × 333 × 334 | 288 × 224 |
DWI (SS-SE-EPI-with fat suppression) | DWI were acquired in a transverse plane, using three b values: low (0–50 s/mm2), intermediate (500–800 s/mm2) and high b value (1000 s/mm2) | |||||
1407/66.5 | AP | 5.9 | 1.5 | 420 × 324 × 306 | 140 × 107 | |
ADC map | ADC maps were calculated by the MR system via linear regression analysis of the natural log of signal intensity using all three b values | |||||