A computerized tomography (CT) scan combines a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside your body. CT scan images provide more-detailed information than plain X-rays do. A CT scan can be used to visualize nearly all parts of the body and is used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment.”
During a CT scan, you’re briefly exposed to ionizing radiation. The amount of radiation is greater than you would get during a plain X-ray because the CT scan gathers more-detailed information. The low doses of radiation used in CT scans have not been shown to cause long-term harm, although at much higher doses, there may be a small increase in your potential risk of cancer. Newer, faster machines and techniques require less radiation than was previously used.
In certain cases, your doctor may recommend that you receive a contrast material dye. This can be something that you are asked to drink, is given through an IV or inserted into your rectum. Although rare, the contrast material can cause medical problems or allergic reactions. Most reactions are mild and include in a rash or itchiness, though there are rare occasions where the allergic reaction can be serious, even life-threatening.
I did not have a CT scan for the breast area. I did have a CT scan of my head when looking for the condition of my jaw and possible cavitations (holes in the bone) and to locate my salivary gland stone. Again, there is a radiation risk, but the information yielded was worth the risk. (Anything to get that d@mn salivary gland stone out of my salivary duct!)