X-ray CT (computed tomography) is a medical imaging technique that uses x-rays to create detailed cross-sectional images of the body. It is commonly used to diagnose and monitor various medical conditions, such as bone fractures, tumors, and internal injuries. X-ray CT works by rotating an x-ray source around the body, capturing multiple images from different angles. These images are then processed by a computer to create a 3D image of the internal structures, allowing healthcare providers to visualize and analyze the affected area. X-ray CT is a non-invasive and highly accurate imaging technique that is widely used in medical practice.