<prompt> All are indications for CT in a head injury patient exceptFocal neurological deficitGCS 13 at presentationAn episode of vomitingPatient is on warfarin  <response>: Indications for CT imaging within 1 hourGCS 13 at any pointGCS 15 at 2 hoursFocal neurological deficitSuspected open, depressed or basal skull fractureMore than one episode of vomitingPost-traumatic seizureIndications for CT imaging within 8 hoursAge 65 yearsCoagulopathy e.g. aspirin, warfarin or rivaroxaban useDangerous mechanism of injury e.g. fall from a height, road traffic accidentRetrograde amnesia 30 minutesBailey and love 27e 330 