CT scan of penetrating head injury by screwdriver.  Caption reads "A 3-D CT scan revealed the severity of the skull base penetrating injury."
De Tommasi A, Cascardi P, De Tommasi C, Luzzi S, Ciappetta P modified by <a href="//commons.wikimedia.org/wiki/User:Delldot" title="User:Delldot">User:delldot</a>
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De Tommasi A, Cascardi P, De Tommasi C, Luzzi S, Ciappetta P (2006). "Emergency surgery in a severe penetrating skull base injury by a screwdriver: case report and literature review". World journal of emergency surgery : WJES 1: 36. doi:10.1186/1749-7922-1-36. <a class="external mw-magiclink-pmid" rel="nofollow" href="//www.ncbi.nlm.nih.gov/pubmed/17169147?dopt=Abstract">PMID 17169147</a>. <a rel="nofollow" class="external free" href="http://www.wjes.org/content/1/1/36">http://www.wjes.org/content/1/1/36</a>