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D.A.N.B. Radiology Review Questions and Answers Fully Solved
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D.A.N.B. Radiology Review
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D.A.N.B. Radiology Review20. With regards to tissues most sensitive to radiation, which of the following is the
correct order from most sensitive to the least sensitive tissue? - answerSkin, oral
mucosa, thyroid gland, nerve
21.Which of the following types of PIDs do NOT produce scatter radiation? - answer
Rectangular and Round
Personnel monitoring of radiation exposure _________________________ - answer
identifies occupational exposure to radiation
What is the single best way to protect a patient from unnecessary radiation exposure? -
answer Fast film speed is the single most effective method of reducing a patient's
exposure to radiation.
a thyroid collar _________ - answer A thyroid collar is recommended for all "Intraoral
Images" and is designed to be a "Separate shield or is part of the lead apron."
What is the size of the x-ray beam produced by a circular collimator as it reaches the
patient's face? - answerThe x-ray beam produced by a circular collimator is "2.75
inches" in diameter. A rectangular-shaped cone further reduces patient exposure to
radiation as it is only slightly larger than size 2 intraoral film.
Which of the following is a true statement regarding pregnant patients and exposure to
radiation? - answerLead aprons prevent exposure to the fetus
After a lead apron is used, it should be: - answerAfter a lead apron has been used, it
must be "disinfected and hung up or laid on a rounded bar". It should never be folded
because it will crack, and permanent damage will make it ineffective.
Which factor is used to measure the penetrating power of radiation? -
answerWavelength, the distance from the top of one wave to the top of the next wave,
is used to measure the penetrating power of radiation.
The collimator: - answerrestricts the size and shape of the x-ray beam
The acronym for the permitted lifetime accumulated dose is _________. - answerMAD,
maximum accumulated dose
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