Any of a variety of methods for observing the internal anatomy of the body, ranging from simple x-rays to complex three-dimensional scanning techniques using nuclear magnetic resonance, positron emission, and other techniques.

takes pictures of the lungs and can detect problems such as a mass, an infection or air in the pleural space. Visual imaging tests include: chest x-rays and CT scans.

Methods used to produce a picture of internal body structures. Some imaging methods used to detect cancer are X-rays, CT scans, magnetic resonance imaging (MRI), ultrasound and PET.