Transverse unenhanced CT image of the head of a 4.5-month-old intact female Ragdoll cat following traumatic brain injury. A brain-windowed image at the level of the tentorium shows a caudotentorial hyperattenuating lesion (white arrows) surrounded by mild hypoattenuating focal area (arrowhead) consistent with acute haemorrhage surrounded by mild oedema. On the Koret CT score, 3 points are granted for caudotentorial oedema and 1 point for parenchymal haemorrhage