X-ray positioning techniques, radiation safety, and film or sensor placement fundamentals for dental radiography.
34 cards · basic cards · AI-written, checked twice. Edit anything.
- What does the ALARA principle stand for in dental radiography?
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As Low As Reasonably Achievable- What is the main purpose of a lead apron during dental x-rays?
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To shield the patient's body from scatter radiation- What does a thyroid collar protect during dental x-rays?
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The thyroid gland from radiation exposure- According to the inverse square law, what happens to radiation intensity when distance from the source doubles?
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It decreases to one fourth of the original intensity- How far should the operator stand from the tube head and patient during exposure if not behind a protective barrier?
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At least 6 feet away- What does a personnel dosimeter (film badge) measure?
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The amount of radiation exposure received by the wearer over time- What does kilovoltage peak (kVp) control in an x-ray beam?
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The penetrating power, or quality, of the x-ray beam- What does milliamperage (mA) control in x-ray production?
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The quantity, or number, of x-ray photons produced- What is the purpose of filtration in an x-ray unit?
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To remove low energy, non-diagnostic x-ray photons from the beam- What is the purpose of collimation in dental radiography?
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To restrict the size and shape of the x-ray beam, reducing patient exposure- How does a longer position indicating device (PID) affect the x-ray beam compared to a shorter one?
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It produces a less divergent, more parallel beam- Why is F-speed film preferred over D-speed film in dental radiography?
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F-speed film requires less radiation exposure to produce an image- What is one radiation safety advantage of digital sensors over conventional film?
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Digital sensors require less radiation exposure to produce a diagnostic image- What does NCRP stand for in dental radiography guidelines?
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National Council on Radiation Protection and Measurements- What is the NCRP recommended maximum annual occupational radiation dose limit?
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50 millisieverts (mSv) per year
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