Table 3.

Criteria for CT head:6.

If none of these conditions are met, consider not ordering CT scan of the head
1.GCS <13 when assessed (irrespective of time post injury or GCS <15 2 h post injury (discuss with surgeon))
2.Any deterioration in condition
3.Suspected open or depressed skull fracture and Any sign of basal skull fracture
4.Post traumatic seizure or Focal neurological deficit
5.>1 episode of vomiting (Additional considerations in children: Early vomiting is more common but ≥3 episodes should be considered significant, tense Fontonelle, Bruising, swelling, laceration >5 cm if < 1 year old, NAI, Abnormal drowsiness).
6.Amnesia >30 min for events prior to injury
7.LOC or amnesia
8.Age >65, Coagulopathy (bleeding/clotting disorder or anticoagulation, e.g. warfarin), High risk mechanism, e.g. pedestrian vs. motor vehicle/ejected from vehicle/fall >1 m
CT scan of Facial Bones:
Head CT can be extended to include all of mandible and skull base in order to obtain CT of both head and facial bones in one acquisition if there is clinical evidence of facial bone injury.Additional axial, coronal and sagittal series using bone algorithm are produced.
CTA of Circle of Willis (COW):
Clinical setting of headache with intracranial bleed (SAH) and minor trauma raising suspicion of ruptured aneurysm.