A 26-year-old woman with a penetrating gunshot wound to the head. (a) Computed tomography (CT)-scout image anterior view and (b) lateral view. Several arrows demonstrate the right frontoparietal entry site and a completely disintegrated bullet. (c) Admission CT, axial views, bone windows, showing the metal artifacts from the bullet case, which was scattered along the path. (d) Admission CT, axial views, corresponding soft tissue windows, also showing metal artifacts from the bullet case as well as bone fragments, scattered along the path and some perifocal hypodensity likely indicating edema. (e) Preoperative CT, coronal reconstructions in bone windows, demonstrating the midline crossing bullet trajectory from left to right as indicated by the arrows. Note that the matching CT venogram in (f) shows that the path did not cross the superior sinus or the ventricle