MR Vasculitis Brain W & WO, MRA COW WO Protocol

Revised - 3/6/2013
Charge as Brain W & WO and non-contrast MRA (& contrast perfusion)
Head Coil
Localizer
(REF scan)
Mode Slice Gap FAT SAT FOV Scan Range
SAG T1 TSE 4mm 1mm None 23cm Scalp to Scalp
AXIAL T2 TSE 4mm 1mm None 23cm Angle to Corpus- Skull Base to Vertex
AXIAL T1 TSE 4mm 1mm None 23cm Angle to Corpus- Skull Base to Vertex
AXIAL T2* GRE GRE 4mm 1mm None 23cm Angle to Corpus- Skull Base to Vertex
AXIAL DWI 2mm Voxel SE EPI 3mm 0.3mm SPIR 23cm Angle to Corpus- Skull Base to Vertex
AXIAL FLAIR TSE 4mm 1mm None 23cm Angle to Corpus- Skull Base to Vertex
*MRA WO See more information below
**AXIAL DSC PWI See more information below
SAGITTAL POST CON T1 flair
(T1 NOT T2 weighted)
TSE 3mm 0mm SPIR (mild) 20cm Scalp to scalp (cropping a few cm on either side is ok); center over COW – MCAs
Turn flow compensation on
AXIAL POST CON T1 flair
(T1 NOT T2 weighted)
TSE 3mm 0mm SPIR (mild) 20cm Angle to Corpus – center over middle cerebral artery (MCA)
Turn flow compensation on
Notes: Can reduce # slices to around 24 for the T1 FLAIRs to keep scan time under 7 minutes. Should be high resolution and cover major/proximal circle of willis vessels; entire brain coverage not required.

**DSC

DSC
(Dynamic Susceptibility Contrast Perfusion)
Localizer
(REF scan)
Mode # of Dynamics FAT SAT FOV Coverage
AX 3D T1 FFE   EPI

60

None 20cm
Notes:
  • Scan for 8-10 Seconds then begin contrast injection @ 5ml/s
  • 15ml Saline chaser
  • ASL Single Phase Slice Positioning. Place slices from top down.
COR FLAIR TSE 4mm 1mm None 23cm Frontal through Occipital Bone
AXIAL T1 TSE 4mm 1mm None 23cm Angle to Corpus- Skull Base to Vertex
COR T1 FAT SAT TSE 4mm 1mm SPIR 23cm Frontal through Occipital Bone
SAG T1 TSE 4mm 1mm None 23cm Optional if lesion seen: Scalp to Scalp

*MRA WO

HEAD Coil
Localizer
(REF scan)
Mode Slice Gap FAT SAT FOV Scan Range:
INCLUDE C1 to 1cm ABOVE Corpus
COW 3D TOF 3D FFE 1mm 0mm None 20cm COW ONLY- Include PICA                             
MIP COW RIGHT SIDE, LEFT SIDE AND POSTERIOR CIRCULATION SEPARATE- 180 SPIN

MRA Brain


Special Technologist instructions