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?
- As Low As Reasonably Achievable
- What is the main purpose of a lead apron during dental x-rays?
- To shield the patient's body from scatter radiation
- What does a thyroid collar protect during dental x-rays?
- The thyroid gland from radiation exposure
- According to the inverse square law, what happens to radiation intensity when distance from the source doubles?
- 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?
- At least 6 feet away
- What does a personnel dosimeter (film badge) measure?
- The amount of radiation exposure received by the wearer over time
- What does kilovoltage peak (kVp) control in an x-ray beam?
- The penetrating power, or quality, of the x-ray beam
- What does milliamperage (mA) control in x-ray production?
- The quantity, or number, of x-ray photons produced
- What is the purpose of filtration in an x-ray unit?
- To remove low energy, non-diagnostic x-ray photons from the beam
- What is the purpose of collimation in dental radiography?
- 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?
- It produces a less divergent, more parallel beam
- Why is F-speed film preferred over D-speed film in dental radiography?
- F-speed film requires less radiation exposure to produce an image
- What is one radiation safety advantage of digital sensors over conventional film?
- Digital sensors require less radiation exposure to produce a diagnostic image
- What does NCRP stand for in dental radiography guidelines?
- National Council on Radiation Protection and Measurements
- What is the NCRP recommended maximum annual occupational radiation dose limit?
- 50 millisieverts (mSv) per year