MR Trigeminal Neuralgia WWO ENT Protocol
Coverage (except for MRA, BFFE):
Sagittal: ear-to-ear, top of frontal sinus to hyoid bone and all of mandible, centered on posterior nasal cavity with FOV of about 180 x 180. Okay to exclude posterior neck/brain and superior brain.
Coronal: Tip of nose to 4th ventricle, top of frontal sinus to hyoid bone and all of mandible. FOV about 180 FH and 150 LR.
Axial: Top of frontal sinus to hyoid bone and all of mandible. Centered on posterior nasal cavity with FOV of about 180 AP x 170 LR. Okay to exclude posterior part of brain and posterior neck.
Last updated: 1/21/22
Charge as: Face, sinus, skull base WWO. MRA head WO.
Scanner preference: Avoid MR1, if possible.
Coil: Head or NV
| Plane | Weighting | Mode | Slice (mm) | Gap (mm) | FAT SAT | FOV (cm) | MPR | Notes |
|---|---|---|---|---|---|---|---|---|
| SAG | T1 | 3D TSE | 0.7 | 0 | no | 18 | no | See sagittal coverage note above. |
| AXIAL | DWI | 2D EPI | 3 | 0.3 | YES | 22 | no | See axial coverage note above. |
| COR | T2 | 2D TSE | 2.5 | 0.25 | Dixon: InPhase & Water only | 18 | no | See coronal coverage note above. |
| AXIAL | T2 | 2D TSE | 3 | 0.3 | Dixon: InPhase & Water only | 18 | no | See axial coverage note above. |
| AXIAL | TOF MRA | 3D FFE | 1 | 0 | no | 18 | COR | COW ONLY- Include PICA. MIP COW RIGHT SIDE, LEFT SIDE AND POSTERIOR CIRCULATION SEPARATE- 180 SPIN |
| AXIAL | T2 | BFFE | 1 | -0.5 | no | 18 | COR, SAG | 75 mm FH coverage centered on pons |
| Hand inject contrast. | ||||||||
| SAG | T1 | 3D TSE | 0.7 | 0 | YES | 18 | AXIAL, COR | See sagittal coverage note above. |
| COR | T1 | 2D TSE | 2 | 0.25 | Dixon: InPhase & Water only | 18 | no | See coronal coverage note above. |
