FIG 2.

Right T7 CVF that was initially deemed occult on DSM by both image reviewers but ultimately felt to be subtly present on secondary review after seeing CB-CTM findings. The CB-CTM (A) demonstrates a clear right T7 CVF (A, arrows) immediately anterior to a contrast-opacified meningeal diverticulum (A, dashed arrow). The DSM (B), performed during the same session, had shown a very subtle flickering attenuation over a few frames (B, solid arrow) adjacent to the diverticulum (B, dashed arrow).