MR Neck WO - Sleep Apnea Protocol
Exam notes:
- Exam should be proctored with radiologist present.
- Use 3D PD to plan rest of scan. Respiratory trigger decreases blurring on PD.
- BTFE: Target temporal resolution of 300–400 ms/image over 30–35 s.
- STIR: Radial acquisition decreases blurring.
- Static and Cine sequences may need to be repeated at the level of suspected airway obstruction.
Other notes:
Last updated: 3/8/22
Charge as: Neck WO
Scanner preference: MR2 only.
Coil: NV or Spine
| Plane | Weighting | Mode | Slice (mm) | Gap (mm) | FAT SAT | FOV (cm) | MPR | Notes |
|---|---|---|---|---|---|---|---|---|
| SAG | PD | 3D TSE | 1.6 | -0.8 | no | 20 | AX, COR | Centered on base of tongue. Respiratory triggering. |
| AXIAL | cine BTFE | 3D | 5 | 0 | no | 20 | no | Centered on base of tongue or epiglottis |
| SAG | cine BTFE | 3D | 5 | 0 | no | 20 | no | Centered on base of tongue |
| AXIAL | cine BTFE | 3D | 5 | 0 | no | 20 | no | Centered on nasopharynx |
| AXIAL | STIR | 2D TSE | 4 | 0.4 | YES | 22 | no | Mid nasal cavity to T1. Radial acquisition. |
| SAG | STIR | 2D TSE | 4 | 0.4 | YES | 22 | no | L-R coverage only of airway. Radial acquisition. |