CTskannausta

CTskannausta, also known as computed tomography or CT scan, is a medical imaging technique that utilizes X-rays and computer processing to create detailed cross-sectional images of the body. Unlike conventional X-rays which produce a flat image, CT scans generate multiple images from different angles. These images are then digitally reconstructed by a computer to reveal internal structures, organs, bones, and blood vessels with remarkable clarity.

The procedure typically involves lying on a table that slides through a donut-shaped machine called a CT scanner. An X-ray source rotates around the patient, emitting narrow beams of X-rays that pass through the body. Detectors on the opposite side measure the amount of X-rays absorbed by different tissues. Denser tissues, like bone, absorb more X-rays than softer tissues, like organs. This difference in absorption is what allows the computer to differentiate between various structures.

CT scans are invaluable diagnostic tools used to detect a wide range of medical conditions. They are commonly employed for identifying tumors, blood clots, internal injuries, infections, and abnormalities in organs such as the brain, lungs, liver, and kidneys. CT scans can also guide medical procedures like biopsies and surgeries, and monitor the effectiveness of treatments. In some cases, a contrast agent, which is a special dye, may be administered intravenously or orally to enhance the visibility of certain tissues or blood vessels. The radiation dose from a CT scan is generally considered safe, but it is used judiciously to minimize exposure.