Royalty free and rights managed images relating to the diagnostic scanning technique of magnetic resonance imaging (MRI). This medical procedure uses radio waves and a powerful magnetic field to image body tissues. MRI scans are often used to diagnose brain and spinal disorders, but can be used on a range of soft tissues such as the heart and other internal organs. Specialised versions of MRI include magnetic resonance angiography (MRA). Photographs and pictures include MRI scanners and radiographers performing scans on patients.