King of radiology🤍🖤

Right frontal intraparenchymal hyperattenuation due to hemorrhage:

(a) Single energy CT scan shows right frontal intraparenchymal hyperattenuation (arrow) and other scattered areas of bilateral subarachnoid hyperattenuation.
(b) Iodine overlay image shows that there is no corresponding
area of hyperattenuation.

Post-thrombectomy iodine extravasation in ischemic stroke
Dual energy CT, (DECT):

(a) Single-energy CT scan shows an intraparenchymal area of hyperattenuation (arrow) in the right lentiform nucleus in patient with recent invasive angiography
(b) Iodine overlay image shows that this area of hyperattenuation corresponds to an area of diffuse contrast material staining (arrow).