Penetrating traumatic brain injury
Man killed with a handgun shot at point black range to the forehead.
CT Brain (annotated)
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Man sustained a handgun shot at very close distance. 3D images depict the bullet entry orifice at cutaneous and bone surfaces. The main bullet path was recognized by bone fragments, shrapnels and blood from the top downward at the right occipital side. A ricochet of a fragment of the bullet was identified by a blood track run out at left temporal area. No exit wound was found.
Man executed with a handgun shot to the head at very close range.
The trajectory from the top downward is not typical for a suicide (best depicted on sagittal images).
The bone table inward or outward beveling is typically indicative of the entry or exit wound respectively. In this case outward beveling (i.e. exit wound) was not present, because the bullet dissipated completely its kinetic energy crossing all skull structures. Thus the bullet had no more energy to break down the posterior bone wall of the skull. Line fractures and their features also give a lot of information about the first bone fracture according to the Puppe’s rule.
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- 2. Viel G1, Gehl A, Sperhake JP. Intersecting fractures of the skull and gunshot wounds. Case report and literature review. Forensic Sci Med Pathol. 2009;5(1):22-7. doi: 10.1007/s12024-008-9062-8. Epub 2008 Oct 15.