(1) X-ray tube-
- tube stand allows for sliding-
longitudinal, transverse, and vertical.
below x-ray tube- controls size and shape
of x-ray field-
use a light source to project a
representation of the x-ray field onto the
- Automatic collimation- PBL-positive beam
- Built in tape measure to check SID
(3) X-ray table- tilt, non-tilt, free floating or
stationary and height adjustable or
Tilt from horizontal to vertical
Bucky tray- below table, holds x-ray cassette,
can be manually moved the entire length of the
table and locked into place
Console- “cockpit of an airplane”- command of
the x-ray machine- set exposure factors.
5 main controls- power switch, kVp, mA, timer
and rotor-exposure switch
kVp- 1 kv=1000 volts
minor and major knobs –range 30-150 kvp
mA- 1 mA= 1/1000 of an ampere-
amt of current- range 100-400 mA for dx radiography
Time- seconds- 25% increments
mAs- how many x-rays for how long
Exposure- activate the rotor to begin- cause
anode to rotate-prepare tube for exposure-
second switch takes the exposure- automatic
timer shuts it off.
Wall mounted Bucky
Pull out tray and place cassette in the tray
and lock it in place- can move entire Bucky
system along vertical plane.
Alignment- table, tube and Bucky all move
separately- be careful to check after
positioning the patient that all parts are in
Components of Fluoroscopy
X-ray tube- located under x-ray table
opposite from the tube-image intensifier- intercept
attenuated beam-transform into electronic image.
Television monitor displays the image
Radiologist views a physiologic event
The image is DYNAMIC
Radiologists take spot films of the process.
Technologist takes “overheads” after fluoro
There is mobile fluoro equip- C arm-