![]() It can show any lacerations of the spleen, kidneys, or liver.Īs a CT scan detects abnormal tissue, it is useful for planning areas for radiotherapy and biopsies, and it can provide valuable data on blood flow and other vascular conditions. The image allows a doctor to confirm the presence and location of a tumor, its size, and how much it has affected nearby tissue.Ī scan of the head can provide important information about the brain, for instance, if there is any bleeding, swelling of the arteries, or a tumor.Ī CT scan can reveal a tumor in the abdomen, and any swelling or inflammation in nearby internal organs. Share on Pinterest A CT scan can detect abnormalities in the soft tissue.ĬT is often the preferred way of diagnosing many cancers, such as liver, lung, and pancreatic cancers. The National Cancer Institute advise patients to discuss the risks and benefits of CT scans with their doctors. The beam takes a spiral path during the scanning, so it gathers continuous data with no gaps between images.ĬT is a useful tool for assisting diagnosis in medicine, but it is a source of ionizing radiation, and it can potentially cause cancer. ![]() The accuracy and speed of CT scans may be improved with the application of spiral CT, a relatively new technology. If blood vessel images are the target, a contrast agent will be injected into the veins. If images lower down the body are required, such as the rectum, the patient may be given a barium enema. The barium appears white on the scan as it travels through the digestive system. ![]() Sometimes, a contrast dye is used because it can help show certain structures more clearly.įor instance, if a 3-D image of the abdomen is required, the patient may have to drink a barium meal. This data is transmitted to a computer, which builds up a 3-D cross-sectional picture of the part of the body and displays it on the screen. The CT scanner’s X-ray detector can see hundreds of different levels of density. The CT scan produces a more detailed final picture than an X-ray image. This is different from an X-ray machine, which sends just one radiation beam. Share on Pinterest A CT scan can help diagnose many types of cancer.Ī CT scanner emits a series of narrow beams through the human body as it moves through an arc.
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