 [ Symptoms ] is there a benefit to taking both aircept and namenda for alzheimer is [ Disease ] the amount of radiation involved in a ct scan would not justify the use as a screening test for the general population it would probably cause more cancer than it would find there are very specific symptoms and signs that would indicate an intracranial problem so it would be best to screen these patients first with a neurological exam rather than just recommending that all people get a brain ct scan just like a pap smear or mammogram