Summary : Computed tomography (CT) is a type of imaging. It uses special x-ray equipment to make cross-sectional pictures of your body. Doctors use CT scans to look for - Broken bones - Cancers - Blood clots - Signs of heart disease - Internal bleeding During a CT scan, you lie still on a table. The table slowly passes through the center of a large X-ray machine. The test is painless. During some tests you receive a contrast dye, which makes parts of your body show up better in the image. NIH: National Cancer Institute
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