Dental Assisting Radiology Practice Exam / Verified Questions with Correct Answers.Quiz____?A lead apron and a thyroid collar - Answer✓✓ must be used on all patients for all exposures Quiz____?A good technique for reducing the radiation exposure to both patient and operator is the use of - Answer✓✓ fast film or digital imaging Quiz____?A patient is concerned with radiation exposure. You can assure him that your office uses the ALARA concept, which includes - Answer✓✓ reducing the number of exposures, minimizing retakes, keeping exposure levels as low as possible Quiz____?All of the following structures will appear radiolucent on dental x-ray film except - Answer✓✓ Page 1 of 23 1 / 3
metal restorations Quiz____?An example of cumulative radiation exposure is - Answer✓✓ cataracts, leukemia, cancer Quiz____?Anything that occupies space and has a form or shape is - Answer✓✓ matter Quiz____?Because the entire x-ray area is considered a radiation hazard area, a radiation hazard sign must be posted in - Answer✓✓ sight of patients, and sight of personnel Quiz____?Chronic radiation exposure occurs when _______ dose of radiation is received over a _______time period - Answer✓✓ small; long Quiz____?Page 2 of 23 2 / 3
Damage caused by ionizing x-radiation to genetic cells: -
Answer✓✓ can affect future generations Quiz____?Damage to which type of cell is passed on to future generations? - Answer✓✓ genetic cell Quiz____?
Exposure to radiation: -
Answer✓✓ no matter how small, has the potential to cause harmful biologic change Quiz____?How much filtration is federally required for a dental x-ray machine operating over 70 kVp? - Answer✓✓ 2.5 mm Quiz____?One of the rules of radiation protection is never stand closer than _____ feet from the x-ray unit during an exposure - Answer✓✓ 6 Page 3 of 23
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