RTBC Safety Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
During compton interactions, the incident x-ray photon interacts with what portion of an atom? -
CORRECT ANSWER - outer shell electron
Photons produced outside of the actual focal spot are known as: - CORRECT ANSWER -
off-focus radiation
Per the NCRP, personnel protective lead aprons used during fluoroscopy should be at least: -
CORRECT ANSWER - 0.50 millimeters of lead equivalent
Radiation dose reduction that is a result of using protective shielding is based on what 2 things? -
CORRECT ANSWER - Material of the shield
Thickness of the shield
Which radiation quantity units are supplied for fluoroscopic exams? - CORRECT
ANSWER - Air kerma
The risk of cancer is estimated by calculating the: - CORRECT ANSWER - effective dose
The measurement of the rate at which electrons flow is known as: - CORRECT
ANSWER - Amperage
A patient in the ER requires a mobile chest x ray. What effort would BEST reduce radiation to
the technologist? - CORRECT 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? - CORRECT ANSWER - Minimizing the time spent in the procedure
, What international system of units (SI) is used to express exposure? - CORRECT
ANSWER - Coulombs/Kilogram
Which two are included in the total filtration of the x-ray beam? - CORRECT ANSWER -
Added filtration
Inherent filtration
The risk of cancer is estimated by calculating the: - CORRECT ANSWER - effective dose
Which two are controlled by kVp? - CORRECT ANSWER - Beam quality
Electric potential
What is the purpose of primary beam restriction? - CORRECT 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? - CORRECT ANSWER - X-rays
Which shell of an atom has the lowest binding energy? - CORRECT ANSWER - outer
shell
What is the BEST way to monitor whole-body radiation dose? - CORRECT ANSWER -
personnel dosimeter
Exam Questions and CORRECT Answers
During compton interactions, the incident x-ray photon interacts with what portion of an atom? -
CORRECT ANSWER - outer shell electron
Photons produced outside of the actual focal spot are known as: - CORRECT ANSWER -
off-focus radiation
Per the NCRP, personnel protective lead aprons used during fluoroscopy should be at least: -
CORRECT ANSWER - 0.50 millimeters of lead equivalent
Radiation dose reduction that is a result of using protective shielding is based on what 2 things? -
CORRECT ANSWER - Material of the shield
Thickness of the shield
Which radiation quantity units are supplied for fluoroscopic exams? - CORRECT
ANSWER - Air kerma
The risk of cancer is estimated by calculating the: - CORRECT ANSWER - effective dose
The measurement of the rate at which electrons flow is known as: - CORRECT
ANSWER - Amperage
A patient in the ER requires a mobile chest x ray. What effort would BEST reduce radiation to
the technologist? - CORRECT 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? - CORRECT ANSWER - Minimizing the time spent in the procedure
, What international system of units (SI) is used to express exposure? - CORRECT
ANSWER - Coulombs/Kilogram
Which two are included in the total filtration of the x-ray beam? - CORRECT ANSWER -
Added filtration
Inherent filtration
The risk of cancer is estimated by calculating the: - CORRECT ANSWER - effective dose
Which two are controlled by kVp? - CORRECT ANSWER - Beam quality
Electric potential
What is the purpose of primary beam restriction? - CORRECT 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? - CORRECT ANSWER - X-rays
Which shell of an atom has the lowest binding energy? - CORRECT ANSWER - outer
shell
What is the BEST way to monitor whole-body radiation dose? - CORRECT ANSWER -
personnel dosimeter
