Fluoroscopy

 Traditionally fluoroscopy is an imaging method that uses x-rays and closed circuit television to produce "real time" images of the body.

Typically in clinical radiology departments fluoroscopy is used to image the digestive tract and the hepato-biliary system and genito-urinary system. In these cases radiographic contrast agents must be introduced into the patient in order to visualize organs that are normally only seen as shadows on a plain radiograph of the abdomen.

Increasingly tradition fluoroscopy is being replaced with digital systems that enhance its diagnostic capacity whilst reducing overall exposure levels. The mobile versions of the fluoroscopic system are used extensively in the operating theatre to assist surgeons to evaluate a wide variety of operative procedures.

ref.: http://www.med.monash.edu.au/radiography/