|SOME ASPECTS OF DARK ROOM TECHNIQUE INFLUENCING
THE QUALITY OF MINIATURE X-RAY PICTURE
|P Chandrasekaran: NTI Newsletter 1988, 24, 81-84.
The quality of X-ray picture depends on various
operational factors starting from storage and loading of films upto
the end product i.e., X-ray picture presented for reading. This
article discusses some of the operational problems faced in maintaining
the quality of the X-ray picture and how to overcome them. Factors
that influence the quality are 1) Equipment with proper controls
2) developing time -6minutes developing time at 20o c is
ideal for MMR. 3) good quality of developer 4) use of safe light
which should be kept 1 meter away from tank 5) processing of film
with standard timer with a margin of +1mt and 6) use of timer
and thermometer (10o 30o). It is observed that in many institutions
and hospitals accessories like dark room timer and thermometer
are not available and films are developed by inspection method.
(i) By observing time and temperature control with
the use of dark room timer which rings at a set time and a dark
room thermometer, we are sure of the final quality of X-ray picture.
(ii) Avoid the inspection method of viewing the film which carries
active developer chemicals on the film during development. This
method of development reduces the quality of X-ray picture. (iii)
Regular use of dark room timer, dark room thermometer in the dark
room ensures a good quality of X-ray picture and thus avoids retake
which means cost, time, waste of man power and additional radiation
|KEY WORDS: X-RAY QUALITY, DARKROOM TECHNIQUE.