The amount of radiation used during a CT scan is considered minimal; therefore, the risk for radiation exposure is low.
If you are pregnant or suspect that you may be pregnant, you should notify your physician.
Radiation exposure during pregnancy may lead to birth defects.
If contrast dye is used, there is a risk for allergic reaction to the dye. Patients who are allergic to or sensitive to medications, contrast dye, iodine, or shellfish should notify their physician.
Patients with kidney failure or other kidney problems should notify their physician. In some cases, the contrast dye can cause kidney failure, especially if the person is taking Glucophage (a diabetic medication).
There may be other risks depending upon your specific medical condition. Be sure to discuss any concerns with your physician prior to the procedure.
Certain factors or conditions may interfere with the accuracy of a CT scan of the chest. These factors include, but are not limited to, the following:
Metallic objects within the chest, such as surgical clips or a pacemaker
Body piercings on the chest
Barium in the esophagus from a recent barium study