x-ray dark room equipment & processing

1. Saurabh Gupta
VHK-1435

2.  A dark room is a room, from which
normal light is excluded.
 It is made completely dark to allow
the processing of light sensitive
radiographic films.
 Entrance to the dark room is light
tight.
 Primary function of a dark room is
to produce a completely darkened
environment in which x-ray film
can be handled & processed to
produce diagnostic radiograph.

3.  Dry bench
 Wet bench
 Safelight
 Cassettes
 Hangers
 Film dryer
 Black box (Film storage box)

4.  Dry Bench: It includes loading
& unloading of cassettes.
 Cassette: A radiographic film
cassette is a rectangular or
square metallic container used
to hold film
(exposed/unexposed) &
Intensifying screens in close &
uniform contact.
 It excludes all light from
entering the cassette & film.
 It holds intensifying screen &
protect them from damage.
 Size- 6*8 ,8*10, 10*12, 12*15,
15*18

5.  Safe light : A safe light is a lamp which
produces light in areas of the spectrum which
will not affect radiographic film.

6.  Hangers : A film hanger is a instrument or
device for holding film during processing
procedure.
 It is made up of stainless steel & available in
various sizes.
 Types of hangers:
1) Clip type
2) Channel type

7.  Wet Bench : It includes 4 processing tanks
1) Developer
2) Rinsing
3) Fixer
4) Washer
 Film Dryer Black box

8.  Check the level of the developer for its correct
level & temp,stir the solution.
 Select the correct film hanger ,switch on the
safe light &switch off the white light .lock the
door.
 Dry bench : Open the cassette & gently grasp
the film at its edges.
 Loading the hanger with film
 Close the cassette by reloading it with
unexposed film.

9.  Wet bench: Place the film in the developer tank
& agitate 2-3 times to remove any air bubble on
film.
 After developing ,lift the film out ,allow the
solution to drain back into developer tank.
 Rinse the film for 10 seconds.
 Place it in fixer tank for 30 seconds.
 Switch on the white light .
 Wash the film under running water.
 Place the film in dryer.
 After drying ,film is ready for screening.