Research Article
Diffusion-Weighted Imaging Combined with Perfusion-Weighted Imaging under Segmentation Algorithm in the Diagnosis of Melanoma
Table 1
Scanning parameters for the head and spine MRI.
| Position | Scanning items | Scanning parameters | Sequence |
| Head | T1WI | Time of repetition (TR): 2000 ms, time of echo (TE): 9 ms | | T2WI | TR: 3000 ms, TE: 98 ms | | Water suppression | TR: 7000 ms, TE: 93 ms Time of inversion (TI): 2500 ms | Fluid attenuated inversion recovery (FLAIR) | DWI | TR: 5000 ms, TE: 90 ms | | PWI | TR: 1500 ms, TE: 60 ms Slice thickness: 5 mm | |
| Spinal canal | T1WI | TR: 420 ms, TE: 9 ms | | T2WI | TR: 3000 ms, TE: 113 ms | | Fat suppression | TR: 330 ms, TE: 41 ms | Turbo inversion recovery magnitude (TIRM) | TI: 220 ms | | Slice thickness: 3 mm | |
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