2. X-ray films are generally mad of an emulsion-gelatin containing radiation sensitive silver halide. with a flexible, blue tented base X-ray films are sensitive to light Emulsion layers are thin so developing, fixing and drying time can be reasonable When gamma rays or light strike the silver halide, changes take place

3. Selection depends on a number of factors: - Composition, shape & size of part being examined - Weight and location of part being examined - Type of radiation used - Intensity of the gamma radiation; kilovoltage - Relative importance of high detail or quick & economical results

4. Radiographic film comes in most basic form as individual sheets in a box Each sheet must be loaded into a cassette or film holder in the darkroom to protect from light exposure Available in a variety of sizes

5. Industrial X-ray films also available in an each sheet form Sheets are in individual wrapped sheets; help prevent fingerprints and damage

6. Packaged film is also available in rolls Allows radiographer to cut the film to any length Advantages? - Longer joints/limbs - Offer economic advantage

7. Should always be handled carefully to avoid physical strains: - Pressure - Creasing - Buckling - Friction Make sure pressure is uniform

8. Self-contained units with integrated x-ray equipment Typically shielded with steel and lead to absorb x-ray radiation Equipped with emergency kill buttons that allow radiographers to shut down he system

9. A strict science governed by rigid rules Involving: - Chemical concentration - Temperature - Time - Physical movement - Require high degrees of consistency and quality control Can be processed by hand or machine

10. An ideal radiographic image should be an accurate portrayal of the area under examination Must ensure that there is: - Minimal image distortion - Contrast - Magnification - Distortion - Accurate positioning

11. Exposure chart is a useful guide Try to keep patient in same position while developing film - Underexposure - Overexposure - Fogging - Lacks Contrast - Screen Marks

12. Radiographs should always be labeled with correct anatomical markers - Patients details and date of exam Generally viewed on a light box Becoming more common to digitize radiographs to be viewed on a monitor Area should be clean Tools (masking aids/film markers) close at hand Gloves should be worn Light level should be low