Generally preferred over MRI imaging for the evaluation of acute subarachnoid hemorrhage, acute head trauma, and bone abnormalities.
With shielding the uterus is exposed to less than 1 mrad during pregnancy.
Un-enhanced study is indicated in patients with suspected stroke and can distinguish acute intracerebral hemorrhage from ischemia.
Unenhanced CT of the brain nearly 100% sensitive for intracranial hemorrhage and approximtely 90% for subarachnoid hemorrhage.