Table 3 MR imaging parameters
From: Role of diffusion weighted MR-imaging in the evaluation of malignant mediastinal lesions
| Â | TR/TE (ms) | Direction of frequency encoding | Section thickness (mm) | Inter-slice gap (mm) | FOV (mm) | Matrix |
|---|---|---|---|---|---|---|
Axial T1-WI (TSE) | 10/4.6 | AP | 9 | 2 | 420 Ă— 325 Ă— 306 | 212 Ă— 179 |
Coronal T1-WI (TSE) | 10/4.6 | R/L | 9 | 1.5 | 425 Ă— 425 Ă— 208 | 284 Ă— 246 |
Axial T2-WI (TSE) | 738/100 | AP | 9 | 2 | 420 Ă— 325 Ă— 306 | 248 Ă— 167 |
Coronal T2-WI (TSE) | 738/100 | R/L | 9 | 1.5 | 425 Ă— 425 Ă— 208 | 284 Ă— 246 |
Sagittal T2-WI (TSE) | 738/100 | AP | 8.5 | 1 | 400 Ă— 299 Ă— 284 | 268 Ă— 195 |
STIR-WI | 1788.3/20 | AP | 10 | 2 | 450 Ă— 333 Ă— 334 | 216 Ă— 161 |
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 s/mm2) and high b value (1000 s/mm2). | |||||
1407/66.5 | AP | 9 | 2 | 420 Ă— 324 Ă— 306 | 140 Ă— 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 | |||||