Fluoroscopy () is an imaging technique that uses X-rays to obtain real-time moving images of the interior of an object. There are two main sub-category of Fluoroscopy. Larger, typically Floor, Wall or Ceiling mounted device often called Cath Lab, and Smaller (but further categorized as Full Size & Mini C-Arm) Mobile C-Arm. In its primary application of medical imaging, a fluoroscope () allows a surgeon to see the internal structure and function of a patient mainly during surgery so that the pumping action of the heart or the motion of swallowing, for example, can be watched. This is useful for both diagnosis and therapy and occurs in general radiology, interventional radiology, and image-guided surgery.

Mobile C-Arm (Full Size & Mini C-Arm) is typically used for surgical and pain management in many different fields including Vascular, Orthopedic, Podiatry, Urology, Fertility clinic, and many other where use of LIVE X-Ray is required. While some Mobile C-Arms are used for vascular cases, most cases for Mobile C-Arm is to be able to see structure (spine & other bones) for injection or minimally invasive surgical procedures. The main difference in Full Size and Mini C-Arm is based on what the object / interest target is. For extremity procedures (hands & foot), a Mini C-Arm can do the job while Shoulder, Hips and Spine may require bigger sized, Full Size C-Arm.

In its simplest form, a fluoroscope consists of an X-ray source and a fluorescent screen, between which a patient is placed. However, since the 1950s most fluoroscopes have included X-ray image intensifiers and cameras as well, to improve the image's visibility and make it available on a remote display screen. For many decades, fluoroscopy tended to produce live pictures that were not recorded, but since the 1960s, as technology improved, recording and playback became the norm.

Fluoroscopy is similar to radiography and X-ray computed tomography (X-ray CT) in that it generates images using X-rays. The original difference was that radiography fixed still images on film, whereas fluoroscopy provided live moving pictures that were not stored. However, today radiography, CT, and fluoroscopy are all digital imaging modes with image analysis software and data storage and retrieval.