Mosbys Comprehensive Review of Radiography LATTEST UPDATE
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
The annual of radiation deposited per unit length of tissue traversed by incoming photons is called: -
ANSWER: Linear energy transfer (LET)
cataractogenesis, life span shortening, embryologic effects, and carcinogenesis are examples of -
ANSWER: long term somatic effects
compton interaction: - ANSWER: Decreases contrast in the radiographic image
Gray, multiplied by a radiation weighting factor equals - ANSWER: Sievert
effective dose limit - ANSWER: is the level of radiation that an organism can receive and probaby
sustain no appreciable effects
radiation with a high LET: - ANSWER: is highly ionizing
Radiation protection is based on which dose response relationship? - ANSWER: linear-nonthreshold
which of the following states that the radiosensitivity of cells is directly proportional to their degree
of differentiation - ANSWER: Law of Bergonie and Tribondeau
which of the following causes about 95% of cellular response to radiation - ANSWER: indirect effect
when radiation strikes DNA, which of the following occurs? - ANSWER: Direct effect
the amount of radiation that causes the number of genetic mutations in a population to double is
called the - ANSWER: Doubling Dose
the SI units of equivalent dose, activity, air kerma, and absorbed dose are, respectively: - ANSWER:
Sievert, becquerel, gray and gray in air
Medical xrays are an example of: - ANSWER: Artificially produced radiation
,Mosbys Comprehensive Review of Radiography LATTEST UPDATE
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
the effective dose limit for a fetus for the entire gestational period is - ANSWER: 5.0 mSv
the photoelectric effect - ANSWER: results in absorption of the incident photon
the annual effective dose limit for radiographers is - ANSWER: 50 mSv
the average dose to active bone marrow as an indicator of somatic effects on a population is called -
ANSWER: Mean Marrow Dose (MMD)
a radiation dose that if received by the entire population would cause the same genetic injury as the
total of doses received by the members actually being exposed is called - ANSWER: Genetically
significant dose
a lead apron of at least what thickness should be worn while being exposed to scatter radiation -
ANSWER: 0.50 mm PB equivalent
use of a thyroid shield of at least what thickness should be used for fluoroscopy - ANSWER: 0.50
mm Pb equivalent
how thick are primary protective barriers - ANSWER: 1/16 inch lead equivalent
Primary protective barriers, if in the walll, must extend to a height of at least - ANSWER: 7 feet
secondary protective barriers must extend to a height of - ANSWER: the ceiling
the protective curtain hanging from the flluoroscopy tower must be at least - ANSWER: 0.25 mm Pb
equivalent
the Bucky slot cover must be at least - ANSWER: 0.25 mm Pb equivalent
Filters made of aluminum and copper are placed in the film badge to measure xrays - ANSWER:
energy
, Mosbys Comprehensive Review of Radiography LATTEST UPDATE
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
film badges are changed - ANSWER: Monthly
thermoluminescent dosimeters use what type of crystals to record dose - ANSWER: lithium fluoride
TLDs are heated and release what type of energy to indicate dose - ANSWER: Visible light
optically stimulated luminescence - ANSWER: 10 uSv
the recording material in an OSL dosimeter is - ANSWER: Aluminum oxide
the energy stored in an OSL dosimeter is released when the dosimeter is exposed to - ANSWER:
Laser
OSL dosimeters may be worn for - ANSWER: 3 months
OSL dosimeters may be scanned and reanalyzed - ANSWER: an unlimited number of times
the most commonly used gonadal shield is the - ANSWER: contact shield
for optimal radiation radiation protection, what type of exposure technique should be used -
ANSWER: high kVp and low mAs
for optimal radiation protection, what speed of IR should be used - ANSWER: fast
the minimum source to skin distance for portable radiography is - ANSWER: at least 12 inches
how often is added filtration adjusted by the radiographer - ANSWER: never
what report does a radiographer consult and initial to verify occupational dose received - ANSWER:
Dosimeter
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
The annual of radiation deposited per unit length of tissue traversed by incoming photons is called: -
ANSWER: Linear energy transfer (LET)
cataractogenesis, life span shortening, embryologic effects, and carcinogenesis are examples of -
ANSWER: long term somatic effects
compton interaction: - ANSWER: Decreases contrast in the radiographic image
Gray, multiplied by a radiation weighting factor equals - ANSWER: Sievert
effective dose limit - ANSWER: is the level of radiation that an organism can receive and probaby
sustain no appreciable effects
radiation with a high LET: - ANSWER: is highly ionizing
Radiation protection is based on which dose response relationship? - ANSWER: linear-nonthreshold
which of the following states that the radiosensitivity of cells is directly proportional to their degree
of differentiation - ANSWER: Law of Bergonie and Tribondeau
which of the following causes about 95% of cellular response to radiation - ANSWER: indirect effect
when radiation strikes DNA, which of the following occurs? - ANSWER: Direct effect
the amount of radiation that causes the number of genetic mutations in a population to double is
called the - ANSWER: Doubling Dose
the SI units of equivalent dose, activity, air kerma, and absorbed dose are, respectively: - ANSWER:
Sievert, becquerel, gray and gray in air
Medical xrays are an example of: - ANSWER: Artificially produced radiation
,Mosbys Comprehensive Review of Radiography LATTEST UPDATE
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
the effective dose limit for a fetus for the entire gestational period is - ANSWER: 5.0 mSv
the photoelectric effect - ANSWER: results in absorption of the incident photon
the annual effective dose limit for radiographers is - ANSWER: 50 mSv
the average dose to active bone marrow as an indicator of somatic effects on a population is called -
ANSWER: Mean Marrow Dose (MMD)
a radiation dose that if received by the entire population would cause the same genetic injury as the
total of doses received by the members actually being exposed is called - ANSWER: Genetically
significant dose
a lead apron of at least what thickness should be worn while being exposed to scatter radiation -
ANSWER: 0.50 mm PB equivalent
use of a thyroid shield of at least what thickness should be used for fluoroscopy - ANSWER: 0.50
mm Pb equivalent
how thick are primary protective barriers - ANSWER: 1/16 inch lead equivalent
Primary protective barriers, if in the walll, must extend to a height of at least - ANSWER: 7 feet
secondary protective barriers must extend to a height of - ANSWER: the ceiling
the protective curtain hanging from the flluoroscopy tower must be at least - ANSWER: 0.25 mm Pb
equivalent
the Bucky slot cover must be at least - ANSWER: 0.25 mm Pb equivalent
Filters made of aluminum and copper are placed in the film badge to measure xrays - ANSWER:
energy
, Mosbys Comprehensive Review of Radiography LATTEST UPDATE
2024-2025 QUESTIONS AND ANSWERS 100% CORRECT
film badges are changed - ANSWER: Monthly
thermoluminescent dosimeters use what type of crystals to record dose - ANSWER: lithium fluoride
TLDs are heated and release what type of energy to indicate dose - ANSWER: Visible light
optically stimulated luminescence - ANSWER: 10 uSv
the recording material in an OSL dosimeter is - ANSWER: Aluminum oxide
the energy stored in an OSL dosimeter is released when the dosimeter is exposed to - ANSWER:
Laser
OSL dosimeters may be worn for - ANSWER: 3 months
OSL dosimeters may be scanned and reanalyzed - ANSWER: an unlimited number of times
the most commonly used gonadal shield is the - ANSWER: contact shield
for optimal radiation radiation protection, what type of exposure technique should be used -
ANSWER: high kVp and low mAs
for optimal radiation protection, what speed of IR should be used - ANSWER: fast
the minimum source to skin distance for portable radiography is - ANSWER: at least 12 inches
how often is added filtration adjusted by the radiographer - ANSWER: never
what report does a radiographer consult and initial to verify occupational dose received - ANSWER:
Dosimeter
