FIG 2.

Examples of RDR on 3T diffusion-weighted MR imaging in acute CRAO (DWI, b=1000s/mm², and ADC images). Left column: In this patient with left-sided CRAO, clear RDR with subtle retinal thickening is shown (white arrows), more pronounced temporally, on 3 consecutive slices (TRACE DWI calculated from the DTI-EPI sequence) and with corresponding qualitative ADC reduction (black arrows). Right column: Two cases of right-sided CRAO are shown with RDR (DWI hypersignal and corresponding visually qualitative ADC reduction). While the upper case is more temporally pronounced, the lower case is more uniformly affecting both the temporal and nasal parts of the retina.