A CT scan, or computed tomography scan, is a medical imaging technique used to create detailed images of the inside of the body. It combines X-rays taken from different angles and uses computer processing to create cross-sectional images, or slices, of bones, blood vessels, and soft tissues.
During a CT scan, the patient lies on a table that slides into a large, circular machine. Inside the machine, an X-ray tube rotates around the patient, sending X-ray beams through the body. These beams are detected by sensors on the opposite side, which send the data to a computer. The computer then processes this data to create a series of two-dimensional images, which can be combined to form a three-dimensional representation of the area being examined.
CT scans are used for a variety of diagnostic purposes, including:
Preparation for a CT scan can vary depending on the type of scan being performed:
While CT scans are generally safe, they do involve exposure to a small amount of radiation. The benefits of accurate diagnosis and treatment usually outweigh the risks. However, special precautions are taken for pregnant women and young children to minimize radiation exposure. If you are pregnant or suspect you might be, inform your doctor before the scan.
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