BU Dental Radiology final test questions with answers

BU Dental Radiology final test questions
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What does the x-ray tube contain? - CORRECT ANSWERS ✔✔cathode anode
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and focusing cup
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Who discovered what x-rays were? - CORRECT ANSWERS ✔✔Wilhelm
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Conrad Roentgen ||




In a dental x-ray tube the electrons are emitted from the what? - CORRECT
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ANSWERS ✔✔Cathode ||




X-ray is produced when electrons moving at a high speed hit the tugstnen
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target in a x-ray tube. T or F - CORRECT ANSWERS ✔✔True
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an assistant may hold the film or sensor in place for the pt during exposure -
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CORRECT ANSWERS ✔✔False || ||




As soon as a film or sensor is placed in a pt's mouth it is considered
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contaminated? - CORRECT ANSWERS ✔✔True || || || ||




X-rays are ionizing radiation. - CORRECT ANSWERS ✔✔True
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, Bitewings show what? - CORRECT ANSWERS ✔✔Crowns and permant
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fixtures are interporximal surfaces of the teeth.
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In the paralleling technique the xray is directed perpendicular to the bisecting
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line between the angle of the long axis of the tooth and the film/sensor -
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CORRECT ANSWERS ✔✔True, explain.. So when you are parallelling, the
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angle you make when you are bisecting is perpendicular to the angle
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Pt;s should be drapped with a led apron prior to any radiographic images? -
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CORRECT ANSWERS ✔✔True || ||




Which if not a safety precaution for taking x-rays?
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-Always stand behind an appropriate barrier?
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-Never stand in the path of primary radiation
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-Never stabilize the tube head during radiation
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-If neccessary hold the film in the pt's mouth - CORRECT ANSWERS ✔✔If
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neccessary hold the film in the pt's mouth, never hold the film or sensor in
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the pts mouth.
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X-rays travel at the speed of light? - CORRECT ANSWERS ✔✔True
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Nerve cells can be regennerated? - CORRECT ANSWERS ✔✔False, No-
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Dense things like bone can and perm fixtures, restorations.
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Which of these have an infulence on radiation protection?
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