CT Scan (cont.)
CT Scan Risks
CT scan is a very low-risk procedure.
- The patient will be exposed to radiation when undergoing a CT scan. However, it is a safe level.
- The biggest potential risk is with a contrast (also called dye) injection that is sometimes used in CT scanning. This contrast can help distinguish normal tissues from abnormal tissues. It also helps to help distinguish blood vessels from other structures such as lymph nodes. Like any medication, some people can have a serious reaction to the contrast. The chance of a fatal reaction to the contrast is about 1 in 100,000. Those at increased risk may require special pretreatment and should have the test in a hospital setting. Anyone who has had a prior contrast reaction or severe allergic reaction to other medications, has asthma or emphysema, or has severe heart disease is at increased risk for a contrast reaction and is referred to a hospital X-ray department for the exam.
- Any time an injection is done into a vein, there is a risk of the contrast leaking outside of the vein under the skin. If a large amount of contrast leaks under the skin, in rare cases, this can cause the skin to break down.
Medically Reviewed by a Doctor on 12/12/2014
Must Read Articles Related to CT Scan
The term bronchial adenoma describes tumors arising from mucous glands and ducts of the trachea windpipe or large airways of the learn more >>
A fracture is a broken bone. Facial fracture refers to any injury that results in a broken bone or bones of the face. Symptoms of a facial fracture depend on wh...learn more >>
Head injury is a general term used to describe any trauma to the head, and most specifically to the brain itself. Several types of head injuries may occur such ...learn more >>
Patient Comments & Reviews
The eMedicineHealth doctors ask about CT Scan (CAT Scan, Computerized Axial Tomography):