Is 4ct in a 6mth period bad i'm very scared & worried bout this a lot of docs tell me that it's a hole of radiation to my brain they where of the brain?

Not if CT's are...: Having multiple ct's in a 6 month period is not a bad thing if the doctors need to do the ct's to treat a problem. If the ct's were important to do, then not doing them would likely have been more harmful than any radiation from the ct's. We expect the doctors, radiology techs, and ct scanners to all be operating properly, using the least amount of radiation, so a patient need not worry too much.