A fluoroscopy system is a medical imaging device that uses an X-ray beam to produce a continuous image of internal body structures in real time: 
Fluoroscopy systems are used in a variety of procedures and examinations, including: Barium X-rays and enemas, Catheter insertion and manipulation, Device placement, Angiograms, and Orthopedic surgery. 
Key components of a fluoroscopy system include:
Image receptor: Converts the X-ray beam into a visible image
Display device: Allows users to see fine details and contrast differences
Patient table and pad
Anti-scatter grid
Image processing computer 
Fluoroscopy systems carry some risks, including radiation-induced injuries to the skin and underlying tissues, and radiation-induced cancers. The FDA regulates the manufacturers of fluoroscopic X-ray systems to ensure they are safe and effective.