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.
REVISED PROTOCOL - IN PROGRESS
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
Planning AX and COR T1 Dixon sequences for vascular access MRI protocol
Planning AX Neck MRV sequence for vascular access MRI protocol
Planning SAG Subclavian MRV sequence for vascular access MRI protocol
Planning COR Dynamic sequence for vascular access MRI protocol
Post Processing Left and Right Subclavians for vascular access MRI protocol