human
My doctor wants to do a CT scan, but I'm not sure what it is. Can you tell me more?
assistant
A CT scan is a type of medical imaging test that uses X-rays to create cross-sectional images of the body. It’s used to diagnose and evaluate many conditions, including cancer, trauma, infections, and heart disease. The test involves moving a thin tube (called a “catheter”) through the body, taking multiple X-ray images as it moves. These images are then combined to form a 3D picture of the inside of the body.