Medical Must-See: Pick your brain – is this a plain CT or contrast enhanced?

In light of radiologists’ recent plea to ration CTs following a global shortage of contrast media, take a look at this brightly lit brain scan.
Is a dye involved, or is it au naturel?
While the contrast is often obvious, a rare blood disorder makes this case a little less black and white (or is that a little more?).
The 26-year-old male patient in question presented with seizures, congenital cyanotic heart disease and Eisenmenger complex.