MR Pediatric Vascular Access Neck Chest WWO Protocol
Notes
Last updated: 1/13/2022
Scanner preference: 1.5T or 3T
Coil: Torso
Former Exam Title: MR Pediatric MRV SVC/Subclavian Veins WO Protocol
Notes from the Radiologist:
- Images should be checked pre-gad for sedated patients or anytime the technologist has a question/concern. For unsedated exams, no check is required.
- Always acquire in AXIAL and CORONAL planes (to distinguish true abnormalities from artifact).
- M2D = multiple 2D (multiple single slice acquisition, with single slices scanned in sequential order)
- Images must be checked by radiologist or radiology resident before patient leaves.
- *Over-contiguous images.
| Plane | Weighting | Mode | Slice | Gap | FS | FOV | Notes |
|---|---|---|---|---|---|---|---|
| AXIAL | T1 | M2D FFE | 3mm | -1.5 mm* | None | Fit to Patient | Shoulder to shoulder, skull base to right atrium. |
| COR | T1 | M2D FFE | 3mm | -1.5 mm* | None | Fit to Patient | Sternum to spine |
| COR | ECG-gated 2D Phase Contrast (QFlow) | 5-10 mm | 0.5mm | None | Fit to Patient | Include bilateral axillary, subclavian and innominate veins, jugular veins, and SVC. Run sequence twice, once with right-left phase encoding (showing flow in subclavian/axillary veins) and once with superior-inferior phase encoding (showing flow in jugular veins and SVC). No sat band or sat pulse. |
| Plane | Weighting | Mode | Slice/Gap | FS | FOV | Notes | Post Processing |
|---|---|---|---|---|---|---|---|
| AX | AX T1 mDIXON | TSE | 4 / 0.5 | mDixon will Auto-Generate T1 FS | Shoulder to shoulder, sternum through spine | Slices to cover skull base through right atrium (below axillas). | |
| COR | COR T2 mDIXON | TSE | 5 / 0.5 | mDixon will Auto-Generate T2 FS | shoulder to shoulder, skull base through right atrium | Slices to cover sternum to spine. | |
| COR | COR T1 mDIXON | TSE | 6 / 0.5 | mDixon will Auto-Generate T1 FS | shoulder to shoulder, skull base through right atrium | Slices to cover sternum to spine. | |
| AX | MRV (Neck) | 2D | 3 / -1.0 | n/a | cover mid clavicles, sternum through spine | Slices to cover skull base through right atrium (below axillas). | Generate MIP w/spin |
| SAG | MRV (Right Subclavian) | 2D | 4 / -1.0 | n/a | cover right shoulder through spine | Slices to cover skull base through right atrium (below axilla). | Generate MIP w/spin |
| SAG | MRV (Left Subclavian) | 2D | 5 / -1.0 | n/a | cover left shoulder through spine | Slices to cover skull base through right atrium (below axilla). | Generate MIP w/spin |
| Inject Contrast | Power Injection | ||||||
| COR | COR PRE AND 3 phase DYNAMIC (NEED WEIGHTING-MDIXON?) | NEED | NEED | n/a | shoulder to shoulder, skull base through right atrium | Slices to cover sternum to spine. Check for wrap. Trigger on ? | Generate right and left subclavian MIP with spin from dynamic |
