Bilateral craniectomy. On the left side, frontoparietal brain contusion is seen. Frontally on the right side, a circumscribed hemorrhage due to the ventricular drain is visible. There is a subdural hemorrhage on both sides, mainly in the frontoparietal region. The gradient echo sequence show blood products in the circumscribed hemorrhage on the right side and some low signal intensity foci on both sides.
No diffusion restriction is visible.
On the TOF sequence and the postcontrast sequence on the left side at the cavernous segment of the internal carotid artery (C4), abnormal signal intensity and enhancement first suspected a traumatic carotid-cavernous fistula.