When an x-ray film is over-exposed and excessively blackened as in Fig. 1a and 1b, it is very difficult torecognize not only pathologic changes but also normal features. One of solvents such as xylene or acetone issidely used to rub out stained dust, ink or colored wax on x-ray films. However, if the details of an over-exposedx-ray is sealed by blackening, these solvents are of no use. Under such a circumstance, sodium hypochlorite(NaCIO) has its place in attenuating the film density and thereby improving the image quality by removingblackened silver bromide. This chemical agent is contained richly in bleaching solution which is obtainable withease. Sodium hypochlorite reacts with silver bromide of the photographic emulsion and results in the formation ofsilver chloride which precipitates. In this way, excessive photographic emulsion from one of the two sides of anx-ray film can be removed with resultant attenuation and improvement of the image quality as in Fig. 1b and 2b.
Acetone ; Dust ; Ink ; Silver ; Sodium Hypochlorite ; Sodium ; Solvents ; X-Ray Film ; Xylenes