Fluoroscopy uses X-rays to produce moving images of organs and allows physicians to examine how organs function in real-time. It differs from traditional X-rays by using an image intensifier to amplify the X-ray signals into visible light images that can be viewed continuously during medical procedures. Fluoroscopy is invaluable for examining involuntary organs and is widely used in procedures like barium X-rays, cardiac catheterization, and arthrography to visualize organ function and guide placement of medical devices.

1. Biomedical Engineering System

2. • Fluoroscopy is a radiologic technique used to examine
the body or an organ.
• It uses X-rays for this purpose.
• While the X-ray machine is able to take one picture at a
time, fluoroscopes are able to take multiple shots per
second to show it as a moving picture.
• This immediate imaging, when
coupled with an image intensifier
in invaluable in many situations.

3. • Fluoroscopes are used mainly for organs because they
do involuntary work. Bones do not do anything unless
they are commanded.
• Because of this, fluoroscopes are used to check if the
organ(s) is(are) functioning properly.
• In short, X-ray machines are used
for
anatomical imaging and is static, as
compared to fluoroscopy, which is
typically used for physiological
imaging and hence, is dynamic.

4. • The main part that differs a fluoroscope from an X-ray machine
is an Image Intensifier.
• Image Intensifiers are used to amplify low light level images in a
wide wavelength range to observable levels.
• Since X-ray photons are not visible, they are sent to image
intensifiers.
• This work is done by
input phosphor.
• Photocathode responds
to light stimulation with
emission of electrons, a
process called
photoemission.

6. • Fluoroscopy is used in many types of examinations and
procedures:
• Barium X-rays
• Cardiac catheterization
• Arthrography (visualization of a joint or joints)
• Lumbar puncture
• Placement of intravenous (IV) catheters (hollow tubes
inserted into veins or arteries)
• Biopsies