Rad Review Mock Exam D 2024/2025 with 100% correct answers
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Course
Rad Rev Mock E
Institution
Rad Rev Mock E
The design limits for a controlled area are based on the: correct answersB.) Annual recommended dose limit for an occupational worker.
Pertaining to the radiation exposure contours for this fluoroscopic unit, which number corresponds to the region receiving the highest exposure? correct answersB...
The design limits for a controlled area are based on the: correct answersB.) Annual recommended dose
limit for an occupational worker.
Pertaining to the radiation exposure contours for this fluoroscopic unit, which number corresponds to
the region receiving the highest exposure? correct answersB.) Number 2
The radiation exposure which is received by the operator of the equipment standing at position number
1 is substantially reduced by the use of:
1.) A stationary radiographic grid
2.) A bucky slot cover
3.) A protective drape correct answersC.) 2 and 3
A radiographic image is obtained in the left PA oblique projection of the abdomen. Which structure is
likely to receive the highest entrance skin exposure? correct answersA.) The skin on the posterior portion
of the abdominal wall
Which of the following changes in the construction of the image receptor may result in the reduction of
the radiation exposure to the patient? correct answersB.) An increase in the size of the crystals used in
the intensifying screen
Because of an extremely low risk for permanent fetal injury, a therapeutic abortion would only be
considered in a fetus exposed to more than:
1.) 25,000 mrad
2.) 5,000 mrad
3.) 1,000 mrad correct answersA.) 1 only
Which of the normal tissues in the human body are most sensitive to the effects of an equivalent of 200
rem irradiation? correct answersA.) The ovaries
,During a digital fluoroscopic procedure, which action will result in the automatic termination of the
exposure? correct answersD.) More than a 5 mA technique is attempted
A radiographer receives an exposure of 120 mrem per week at a 50 cm source-to-skin distance. In order
to reduce this exposure to less than 30 mrem per week, this person could move to a/an: correct
answersD.) 105 cm source-to-skin distance
The ability of ionizing radiation to produce a biological response: correct answersA.) Decreases as the
quality factor of the radiation decreases
According to the current recommendations, which of the following individuals would have the highest
annual effective dose equivalent limit? correct answersD.) A pregnant occupational worker
During a digital radiographic procedure, a reduction in the scatter radiation intensity in the patient is
NOT associated with which of the following? correct answersC.) A reduction in the amount of radiation
the radiographer receives
The amount of radiation exposure that causes twice the expected incidence of a disorder in a population
is termed: correct answersA.) Doubling dose
Which set of exposure settings and technical factors is most likely to produce the lowest entrance skin
exposure to the patient?
A developing human embryo is most sensitive to radiation-induced injuries during the stage known as:
correct answersD.) Organogenesis
A gonad shield with a .5 mm lead equivalent will attenuate approximately _____ of the incident x-rays
produced during an exposure of 75 kVp. correct answersC.) 88%
, The principal reason why this radiographic image would have to be repeated is because: correct
answersD.) The radiographer failed to center the image receptor properly as to include the entire region
of interest.
Which of the following is NOT one of the areas normally associated with a higher than usual
occupational exposure rate? correct answersA.) Digital radiographic procedures
The American College of Radiology specifies a maximum entrance exposure measured with a dosimeter
should not exceed: correct answersD.) 1100 mR for an abdominal exposure
During which of the following examinations is a female patient most likely to receive the highest
genetically significant dose? correct answersB.) A Hysterosalpingogram
In a radioactive source has a half-life of 8 hours. How long would it take to reduce a 100 mcurie per hour
source to a level of 12.5 mcurie per hour? correct answersD.) 24 hours
Which of the following is a common somatic effect that has been demonstrated in individuals exposed to
larger amounts of ionizing radiation?
1.) The development of cerebral palsy
2.) A lower sperm count
3.) The development of pyloric stenosis correct answersB.) 2 only
The majority of damage resulting from radiation exposure in the body is due to indirect chemical
changes that occur when _____ molecules are modified by their exposure to radiation. correct
answersC.) Water
Which of the following amounts of shielding is likely to attenuate the greatest number of high energy
(100 keV) x-ray photons? correct answersC.) .5 mm of lead
A radiographer receives an exposure of 268 mroentgen per hour from a radioactive source at a distance
of 180 cm. What exposure would this person receive at a 360 cm source-t0-skin distance? correct
answersB.) 67 mroentgen per hour
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