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Related Experiment Video

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Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

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Published on: July 26, 2016

Optical density changes in dry-processed films.

Khaled Al Khalifah¹, Ajit Brindhaban, Ghadeer Al Baloul

¹Department of Radiologic Sciences, Kuwait University.

Radiologic Technology

|September 13, 2007

Summary

Dry-processed radiographic films degrade when exposed to direct sunlight and temperatures above 35°C (95°F). Proper storage is crucial to maintain the diagnostic quality of these medical imaging films.

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Area of Science:

Medical Imaging
Radiology
Materials Science

Background:

Dry-processed radiographic films require controlled storage conditions to prevent image degradation.
Accidental exposure to heat and light can occur when films are left on viewing boxes or outside the radiology department.

Purpose of the Study:

To evaluate the impact of heat and light exposure on the optical density of dry laser imager radiographic films.

Main Methods:

Radiographic film step-wedge images were exposed to a viewing box, car trunk, and direct sunlight.
Optical density changes were measured using a densitometer.
Significant changes were defined as exceeding 2 standard deviations from the original optical density.

Main Results:

Films on a viewing box or in a car trunk showed no significant optical density changes.
Direct sunlight exposure for 30 minutes or more at 40°C (104°F) caused significant optical density changes.

Conclusions:

Dry-processed films are susceptible to degradation at temperatures exceeding 35°C (95°F).
Adherence to proper storage protocols is essential for preserving the diagnostic integrity of radiographic films.