Changes

In adults, indications mainly include altered mental status, post-traumatic seizure, focal neurologic deficit, vomiting and/or anticoagulant medication.<ref>'''UK''': {{cite web|url=https://www.nice.org.uk/guidance/cg176/resources/imaging-algorithm-pdf-498950893|title=Head Injury - Algorithm 1: Selection of adults for CT head scan|website=NICE}} 2014</ref> There are various scoring systems for the decision ([https://www.nice.org.uk/guidance/cg176/resources/imaging-algorithm-pdf-498950893 NICE (UK)], [https://jamanetwork.com/journals/jama/fullarticle/201596 NOC (US)], [https://jamanetwork.com/journals/jama/fullarticle/201596 CCHR (Canadian)]), but for the radiologist it is extremely rare to deny a CT if suggested by a clinician, since it is generally a non-contrast and relatively low dose investigation that is analysed relatively fast.