Radiography POS 814
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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elongated images | on a dental radiograph, images of the teeth that appear long and distorted
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forshortened images | images of the teeth that appear short with blunted roots
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focal trough | a 3 dimensional curved zone or image layer in which structures are reasonably well defined
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Frankfort plane | the imaginary plan that intersects the orbital rim of the eye and the opening of the ear.
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ghost image | an artifact on a dental radiograph produced when an area of high density is penetrated twice by the x-ray beam and appears radiopaque. Ex earings
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herringbone pattern | an image on a dental radiograph that has been placed in the mouth backward and exposed
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phalangioma | error- resulting from the patients finger being placed in front of the film
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cone cut | clear unexposed area on a dental radiograph that occurs when the position indicating device is misaligned and the x-ray beam is not centered on the film.
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distortion | a geometric characteristic that refers to a variation in the true size and shape of the object being radiographed.
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penumbra | the unsharpness, or blurring that surrounds the edges of a radiographic image
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quality assurance | special procedures used to ensure the production of high-quality, diagnostic radiographs.
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radiographic interpretation | explanation of what is viewed on a dental radiograph; the ability to read what is revealed by a dental radiograph
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stepwedge | a device constructed to demonstrate film densities and contrast scales
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