Processing faults

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Elongation - Collimator angulation is too shallow, producing a long image 

Foreshortening of image- Collimator angulation is too steep producing a squat image 

Coning- Collimator angulation is not central to the film, so the film is only partly exposed

Blurred image- Patient or collimator moved during exposure 

Transparent film or faint image with overlying pattern- Film placed the wrong way round to the collimator for exposure, with the Lead foil pattern superimposed onto the film- this may not always appear as…


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