Magnetic resonance imaging (MRI) makes use of the potential energy stored in the body’s hydrogen atoms. Those atoms are manipulated by very strong magnetic fields and radiofrequency pulses to produce adequate amount of localizing and tissue-specific energy that will be used by highly sophisticated computer programs in order to generate two-dimensional and three-dimensional images. The major advantage is that no ionizing radiation is used.

Fluoroscopy represents a modality where X-rays are used in performing real-time visualization of the body, allowing for evaluation of body parts, administered contrast flow and positioning changes of bones and joints. Radiation doses in fluoroscopy are substantially higher when compared to conventional radiography, as many images are acquired for every minute of the procedure.