Transverse unenhanced CT image of the head of a 2-year-old castrated male domestic shorthair cat following traumatic brain injury. A brain-windowed image at the level of the interthalamic adhesion shows a hyperattenuating lesion (white arrows) surrounded by a hypoattenuating area (white arrowheads) consistent with acute parenchymal haemorrhage with surrounding parenchymal oedema; lateral ventricular asymmetry (black arrows) is also noted. The presence of haemorrhage and lateral ventricular asymmetry at this location each grants 1 point to the Koret CT score