This channel was originally intended for the flipped classroom lectures that I give to the Radiology Residents at the University of Pittsburgh. But it has taken on a life of its own, especially internationally. I try to keep up a regular supply of short topics interspersed with full lectures. Longer lectures are split into segments. If you like the videos, I'd be happy to visit your institution and give some lectures in person!
Does the addition of a hi-res T2-weighted sequence like the CISS or FIESTA, and a hi-res contrast T1 series, provide useful information that, when combined with the DWI sequence, allow for a more accurate assessment of temporal bone pathology ? I would think that these other sequences would have been helpful in diagnosing a mastoid abscess, with or without a cholesteatoma present.
We do include those sequences in our cholesteatoma protocol. In addition to assessing for alternative pathology, it is useful for anatomic localization. It is sometimes difficult to determine exactly where the restricted diffusion is located within a sea of inflammatory debris. Correlating with the SSFP sequences allows you to be specific about the location of the cholesteatoma.
Not a superhero but a cartoon character. Coronal T2 MRI projection in Rhomboencephalosynapsis resembles that of the face of Donald Duck. With the two ventricles as eyes, and the cerebellum sans the vermis as its bill.
thanks for sharing, i never thought about arterial narrowing as a way to navigate this ddx, i’d be curious to hear your thoughts on how inflammatory pseudotumor fits in
Pseudotumor affects younger patients and, in this location, is more rare than either of the other two diagnoses. In fact, I haven't encountered a case in the central skull base (although I'm sure it exists). The destructive nature of both infection and tumor should help to distinguish them.
