MEDICINE
RADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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density.
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contrast.
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exposure time.
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secondary radiation.
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target-to-skin distance.
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Detailed explanation-1: -Intensifying screens convert the X-rays received into light, which forms the image on the film. This reduces the exposure needed to provide a diagnostic image. The latent image is converted into a permanent visible image through the use of developer and fixer.
Detailed explanation-2: -The combination of screen films, intensifying screens and cassettes are used in making extraoral images. The main function of screens is to reduce radiation to the patient.
Detailed explanation-3: -Intensifying screens are used in the x-ray cassette to intensify the effect of the x-ray photon by producing a larger number of light photons. It decreases the mAs required to produce a particular density and hence decreases the patient dose significantly.
Detailed explanation-4: -Double Exposure It is extremely important to avoid this error because it exposes the patient to radiation twice. To eliminate this error, maintain an organized workspace in which exposed receptors are placed in one area or turned over as a means to separate exposed from unexposed receptors.