what would prevent me having a scan?

If you are pregnant

All women of childbearing age should only have a CT scan of the abdomen and pelvis during the first 10 days of their menstrual cycle. Otherwise, pregnant women should not have a CT scan or any other x-ray examination, especially during the first trimester (first 3 months of pregnancy). Sometimes a CT scan is absolutely necessary and then we take additional protective measures. Please inform the radiographer if you are, or think you may be, pregnant.