Fluoroscopy is an imaging technique commonly used by
physicians to obtain real-time images of the internal structures of a patient through the use of a fluoroscope. In its simplest form, a fluoroscope consists of an
x-ray source and fluorescent screen between which a patient is placed. However, modern fluoroscopes couple the screen to an
x-ray image intensifier and
CCD video camera allowing the images to be played and recorded on a monitor. The use of x-rays, a form of
ionizing radiation, requires that the potential risks from a procedure be carefully balanced with the benefits of the procedure to the patient. While physicians always try to use low
dose rates during fluoroscopy procedures, the length of a typical procedure often results in a relatively high
absorbed dose to the patient. Recent advances include the digitization of the images captured and flat-panel detector systems which reduce the radiation dose to the patient still further.
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