Fluoroscopy is used to visualize the motion of internal fluids, structures,
and devices. During a fluoroscopic examination, the operator controls acti
vation of the x-ray tube for real-time imaging of the patient. The article
provides a general overview of fluoroscopic imaging from its initial develo
pment to modem use. Early fluoroscopes produced a dim image on a fluorescen
t screen that required dark adaptation of the physician's eyes to optimize
viewing conditions. Image intensifiers were later developed to replace the
fluorescent screen and increase image brightness. Modem fluoroscopy systems
include an image intensifier with television image display and a choice of
several different types of image recording devices. Fluoroscopic equipment
is available in many different configurations for use in a wide variety of
clinical applications.