MR IAC WWO ENT Protocol

History of cholesteatoma?

Only run the coronal DWI if there is history of cholesteatoma. Use TSE or RESOLVE. Do not use EPI as it causes warp at the skull base.  

Sagittal oblique MPRs: 

From the T2 sequence, create separate right and left MPRs, each perpendicular to the IAC, at 0.5 mm/0mm, from midline of the brainstem through the semicircular canals.

Last updated: 1/21/22
Charge as: IAC WWO
Scanner preference: Avoid MR1
Coil: Head

Plane Weighting Mode Slice (mm) Gap (mm) FAT SAT FOV (cm) MPR Notes
AXIAL T2 3D TSE 0.5 0 no 17 COR, SAG OBLIQ Small FOV, F-H about 2.8 cm, centered on IACs.
AXIAL T1 3D TSE 0.5 0 no 17 COR, SAG Small FOV, F-H about 5.2 cm, centered on IACs.
AXIAL DWI 2D TSE or RESOLVE 2 0.2 YES 17 no Small FOV, F-H about 5.2 cm, centered on IACs. Send only B1000 & ADC. TSE or RESOLVE (not EPI).
optional COR DWI 2D TSE or RESOLVE 2 0.2 YES 17 no Only run coronal if cholesteatoma. Small FOV. Cover all of temporal bone. Send only B1000 & ADC. TSE or RESOLVE (not EPI).
HAND INJECT CONTRAST.
AXIAL T1 3D TSE 0.5 0 YES 17 COR, SAG Small FOV, F-H about 5.2 cm, centered on IACs.
MR IAC WO ENT Protocol image