A Computerized Tomography scan, or CT scan, uses x-rays to form three-dimensional images of body parts and organs. CT scans can be as small as a detailed scan of the heart or as large as a more generalized full-body scan. CT scans are often paired with Positron Emission Tomography scans, or PET scans, to produce results much more quickly than with conventional CT scans.
Abdominal CT Scans
Abdominal CT scans are used to diagnose and screen patients for problems with organs in the abdominal cavity. CT scans provide more detailed visual data than traditional x-rays of abdominal organs. Abdominal CT scans can diagnose problems in, among other organs, the kidney and liver, spleen, pancreas, small and large intestines, bladder and gall bladder.
Full-Body CT Scans
Full-body CT scans cast a three-dimensional image of all bones, systems and organs. Full-body scans usually run from the chin to just below the hips, although if required they can run from the top of the head to the bottom of the feet. Full-body CT scans are usually done as a preventative measure to look for signs of disease.
Brain CT Scans
Brain-specific CT scans can provide higher resolution three-dimensional images of only the brain. These scans are commonly used to diagnose brain injuries, brain trauma, tumors or cancer and aneurysms. In addition, they can be used to locate cavities in the brain in people diagnosed with hydrocephalus. Brain scans can be very helpful in preparing for radiation therapy and helping doctors locate a brain tumor that requires a biopsy.
Chest CT Scans
A chest-only CT scan gives a doctor a three-dimensional image of the chest cavity with more image detail than provided by a traditional x-ray. Chest CT scans show details of the lungs, the ribs and other bones, the heart and the chest veins and arteries. CT scans can show a number of problems, including artery blockages, some heart conditions and some lung cancer tumors.
CT Scans of Specific Organs
In addition to general area scans and brain scans, CT scans can be made of particular organs of interest. Localized heart scans can provide visual information to help diagnose heart disease and arterial blockages. Kidney and liver scans can help diagnose kidney and liver disease. Specific lung scans can help diagnose particular conditions of the lungs.
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