Question: You are seeing a 56 year old male with longstanding bilateral chronic otitis media with cholesteatoma. He has had multiple surgeries and ultimately underwent right subtotal petrosectomy, ear canal overclosure, and cochlear implantation. Due to new otalgia and dizziness, you order an MRI with diffusion weighted imaging to evaluate. Which of the following MR sequences would have the most imaging artifact from the CI magnet?

a) T1

b) T2

c) FLAIR

d) DWI

[Answer will be posted with next week's new question]

Answer to last week's question, “What Goes In Must Come Out” (January 17, 2021)

A - Preseptal cellulitis.