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RTBC Safety Exam Radiation Safety Questions with Latest Update
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During comption interactions, the incident x-ray photon interacts with what portion of an atom? - Answer-outer shell electron Photons produced outside of the actual focal spot are known as: - Answer-off-focus radiation Per the NCRP, personnel protective lead aprons used during fluoroscopy sho...

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  • October 10, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • rtbc safety exam radiation safety questions with l
  • during comption interactions the incident x ray p

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  • Radiation safety

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RTBC Safety Exam Radiation Safety
Questions with Latest Update
During comption interactions, the incident x-ray photon interacts with what portion of an
atom? - Answer-outer shell electron

Photons produced outside of the actual focal spot are known as: - Answer-off-focus
radiation

Per the NCRP, personnel protective lead aprons used during fluoroscopy should be at
least: - Answer-0.50 millimeters of lead equivalent

Radiation dose reduction that is a result of using protective shielding is based on what 2
things? - Answer-Material of the shield
Thickness of the shield

Which radiation quantity units are supplied for fluoroscopic exams? - Answer-Air kerma

The risk of cancer is estimated by calculating the: - Answer-effective dose

The measurement of the rate at which electrons flow is known as: - Answer-Amperage

A patient in the ER requires a mobile chest x ray. What effort would BEST reduce
radiation to the technologist? - Answer-Standing 6 feet away from the x-ray tube during
the exposure

During a fluoroscopic procedure, what effort would BEST reduce radiation exposure to
the technologist? - Answer-Minimizing the time spent in the procedure

What international system of units (SI) is used to express exposure? - Answer-
Coulombs/Kilogram

Which two are included in the total filtration of the x-ray beam? - Answer-Added filtration
Inherent filtration

The risk of cancer is estimated by calculating the: - Answer-effective dose

Which two are controlled by kVp? - Answer-Beam quality
Electric potential

What is the purpose of primary beam restriction? - Answer-keep the amount of tissue
irradiation to a minimum

improve image quality

, reduce patient exposure

reduce scatter production

What is a type of ionizing radiation? - Answer-X-rays

Which shell of an atom has the lowest binding energy? - Answer-outer shell

What is the BEST way to monitor whole-body radiation dose? - Answer-personnel
dosimeter

Which may alert fluoroscopic x-ray production after a preset period of time? - Answer-
Cumulative timer

Which beam restriction device is the most versatile for defining the size and shape of
the radiographic beam? - Answer-Collimator

The safety features of a fluoroscopic unit do not include a: - Answer-high grid ratio

Personnel dosimeters should always be worn at the: - Answer-collar, outside the lead
apron

When using fluoroscopy, which is directly proportional to the exposure delivered to the
patient? - Answer-Milliamperage (mA)

Which radiation interaction with matter results in the greatest occupational exposure? -
Answer-Compton

Which would best help reduce radiation exposure to the radiographer? - Answer-
Increasing distance from the x-ray tube

To reduce occupational exposure, what is the minimum length required for a mobile x-
ray machine's handheld exposure switch cord? - Answer-6 feet

Which of the following radiation effects are most likely in diagnostic medical imaging? -
Answer-cancer

The main purpose of adding filtration to the x-ray tube is to: - Answer-Decrease patient
dose

The penetrating power of the x-ray beam is controlled by: - Answer-kilovoltage peak
(kVp)

Which four factors are true of acute radiation syndrome (ARS)? - Answer-ARS is more
likely in a nuclear accident than radiography

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