Table 1 Utility of MRI sequences for the study of cranial nerves
MRI sequences | Features |
|---|---|
T1-weighted sequences | - Anatomical definition - Invasion of fat planes - Denervation changes |
T2-weighted sequences | - Lesion characterization - Patency of CSF spaces - Denervation changes |
Fast spin echo; steady-state free procession | - Cisternal course of the nerve - Neurovascular conflict |
DWI–FLAIR sequences | - Ischemic lesion |
Post-gadolinium T1-weighted sequences (eventually with fat-suppression) | - Enhancement of the nerve - Perineural spread - Meningeal infiltration |