Computerized tomography also called a CT scan — is an imaging method that uses x-rays taken from many different angles and computer processing to create images of the bones and soft tissues inside your body. The resulting images can be compared to looking down at single slices of a bread loaf. Your physician may decide that you receive a dye called contrast before the CT scan. Contrast helps certain areas show up better on the x-rays. Please notify your physician if you have ever had a reaction to contrast. Your physician may order a CT scan to diagnose symptoms such as anemia, blood in stool, unexplained weight loss, abdominal pain, tumors or masses and suspected Crohn’s or colitis. This procedure is performed at a hospital or outpatient clinic.
How does a CT work to diagnose gastrointestinal problems?
CT scan images can provide much more information than traditional x-rays. CT scans can be used to diagnose problems of the liver and/or gallbladder like gallstones, abscesses, abnormal blood vessels or tumors. The CT test may also be used to diagnose brain and spinal cord injuries, identify masses and tumors, blood clots, kidney stones, broken bones and detect internal bleeding.
What are the risks?
You will be exposed to a small amount of radiation during the CT scan. While long term exposure can cause harm, the benefits of a CT greatly outweigh the risks. Sometimes people have an allergic reaction to the contract dye. If you have ever had a reaction, make sure you let you doctor know. If you have any concerns about getting a CT scan, talk to your doctor beforehand.
References
Mayo Clinic. 2022. CT Scan. https://www.mayoclinic.org/tests-procedures/ct-scan/about/pac-20393675
Cleveland Clinic. 2023. CT (Computed Tomography) Scan. https://my.clevelandclinic.org/health/diagnostics/4808-ct-computed-tomography-scan
