Radiology is a field of medicine that uses medical imaging methods of ionizing radiation to detect and treat diseases. Examples include ultrasound, X-rays, Computed tomography, Positron emission tomography and Magnetic resonance imaging.

In the English National Health Service a lot of radiology is outsourced to private forms, which were paid £120 million in 2021. Some are actually limited liability partnerships of NHS staff. Demand for radiology is increasing by about 10% a year.