What is the double inversion recovery (DIR) MRI sequence?
DIR is a MRI pulse sequence which suppresses signal from both the CSF and the white matter enhancing any inflammatory lesion.
MRI T2 and double inversion recovery (DIR) sequences demonstrate a clear hippocampi asymmetry where the left hippocampus is smaller than the right (hippocampal atrophy) and has an increased T2 signal.
Remaining parenchyma volume is age-appropriate. No other abnormalities identified in the current MRI protocol.