HESI RADIOLOGY EXIT EXAM PREP VERSION 1 EXAM QUESTIONS AND
ANSWERS PRACTICE QUESTIONS WITH SOLUTIONS NEWEST | ALREADY
GRADED A+
1. A radiologic technologist is preparing to perform a routine radiographic
examination and wants to minimize radiation exposure while still producing
a diagnostic-quality image. Which principle should guide the technologist's
approach to radiation protection?
A. Maximum exposure for maximum image density
B. ALARA, using radiation doses that are as low as reasonably achievable
C. Increasing exposure whenever patient anatomy is difficult to visualize
D. Repeating images until the radiograph appears aesthetically perfect
Answer: B
2. A technologist is standing near a patient during a portable radiographic
examination and must reduce occupational exposure from scattered
radiation. Which combination represents the three cardinal principles of
radiation protection?
A. Positioning, collimation, and filtration
B. kVp, mAs, and SID
C. Time, distance, and shielding
D. Contrast, density, and resolution
Answer: C
3. A radiographer receives an exposure of 16 mR while standing 2 feet from a
radiation source. If all other conditions remain unchanged, approximately
how much exposure would the radiographer receive at 4 feet?
A. 8 mR
B. 4 mR
C. 2 mR
D. 1 mR
Answer: B
pg. 1
, 4. A radiographer needs to remain in the room during a portable examination
because the patient cannot be left unattended. Which action provides the
greatest reduction in occupational exposure when combined with
appropriate shielding?
A. Stand as close to the patient as possible
B. Stand at a 90-degree angle to the beam and maximize distance from the
patient
C. Stand directly in front of the x-ray tube
D. Hold the image receptor against the patient while standing beside the
tube
Answer: B
5. During an x-ray exposure, the technologist notices that an unnecessary
portion of the patient's anatomy has been included in the radiation field.
Which adjustment would most directly reduce the amount of irradiated
tissue and scatter radiation?
A. Increase the exposure time
B. Increase the field size
C. Collimate the beam more closely to the area of interest
D. Increase the source-to-image receptor distance
Answer: C
6. A radiographer is reviewing occupational radiation monitoring and wants to
identify the device used to record cumulative radiation exposure received
by personnel. Which device is appropriate?
A. Exposure indicator
B. Dosimeter
C. Ionization chamber used for AEC
D. Densitometer
Answer: B
7. A technologist wears a lead apron while performing fluoroscopic
procedures and uses a personal dosimeter according to departmental
policy. Which practice best reflects appropriate radiation protection?
pg. 2
, A. Wear the dosimeter only when a patient is radioactive
B. Store the dosimeter in the x-ray room between procedures
C. Wear and position the dosimeter according to established monitoring
procedures
D. Share the dosimeter with another technologist during the same shift
Answer: C
8. A pregnant radiologic technologist has declared the pregnancy and wants to
reduce occupational radiation exposure to the developing embryo or fetus.
Which approach is most appropriate?
A. Stop all radiographic work regardless of the procedure
B. Continue appropriate duties while following fetal monitoring and
radiation-protection requirements
C. Wear two dosimeters and ignore distance
D. Increase exposure factors so fewer images are needed
Answer: B
9. A radiographer is explaining the difference between deterministic and
stochastic radiation effects. Which statement correctly describes a
stochastic effect?
A. It has a threshold and severity increases predictably after the threshold
B. Its probability increases with radiation dose, without a recognized
threshold for the effect
C. It occurs only when a very large radiation dose is delivered at once
D. It is limited exclusively to skin erythema
Answer: B
10. A patient receives a radiation dose during an examination, and the
technologist explains that certain tissue reactions have a threshold dose
below which the effect is not expected. Which category describes these
effects?
A. Stochastic effects
B. Genetic effects only
C. Deterministic effects or tissue reactions
pg. 3
, D. Random effects without a threshold
Answer: C
11. A radiographer increases the distance from a radiation source while all
other factors remain unchanged. Which physical principle explains why the
radiation intensity decreases rapidly as distance increases?
A. Inverse square law
B. Line focus principle
C. Reciprocity law
D. Heel effect
Answer: A
12. A technologist reduces the time that a fluoroscopic beam remains activated
while maintaining the required procedure. Which radiation-protection
principle is being applied?
A. Increasing distance
B. Reducing time
C. Increasing filtration
D. Increasing magnification
Answer: B
13. A radiographer is selecting a material to attenuate x-ray photons when
designing structural radiation shielding. Which material is commonly
associated with diagnostic x-ray shielding?
A. Lead
B. Aluminum foil
C. Plastic
D. Wood
Answer: A
14. A radiographer increases filtration in an x-ray tube to remove low-energy
photons that would contribute to patient skin dose without improving
image formation. What is the primary purpose of filtration?
A. Increase scatter production
B. Remove low-energy photons from the beam
pg. 4
ANSWERS PRACTICE QUESTIONS WITH SOLUTIONS NEWEST | ALREADY
GRADED A+
1. A radiologic technologist is preparing to perform a routine radiographic
examination and wants to minimize radiation exposure while still producing
a diagnostic-quality image. Which principle should guide the technologist's
approach to radiation protection?
A. Maximum exposure for maximum image density
B. ALARA, using radiation doses that are as low as reasonably achievable
C. Increasing exposure whenever patient anatomy is difficult to visualize
D. Repeating images until the radiograph appears aesthetically perfect
Answer: B
2. A technologist is standing near a patient during a portable radiographic
examination and must reduce occupational exposure from scattered
radiation. Which combination represents the three cardinal principles of
radiation protection?
A. Positioning, collimation, and filtration
B. kVp, mAs, and SID
C. Time, distance, and shielding
D. Contrast, density, and resolution
Answer: C
3. A radiographer receives an exposure of 16 mR while standing 2 feet from a
radiation source. If all other conditions remain unchanged, approximately
how much exposure would the radiographer receive at 4 feet?
A. 8 mR
B. 4 mR
C. 2 mR
D. 1 mR
Answer: B
pg. 1
, 4. A radiographer needs to remain in the room during a portable examination
because the patient cannot be left unattended. Which action provides the
greatest reduction in occupational exposure when combined with
appropriate shielding?
A. Stand as close to the patient as possible
B. Stand at a 90-degree angle to the beam and maximize distance from the
patient
C. Stand directly in front of the x-ray tube
D. Hold the image receptor against the patient while standing beside the
tube
Answer: B
5. During an x-ray exposure, the technologist notices that an unnecessary
portion of the patient's anatomy has been included in the radiation field.
Which adjustment would most directly reduce the amount of irradiated
tissue and scatter radiation?
A. Increase the exposure time
B. Increase the field size
C. Collimate the beam more closely to the area of interest
D. Increase the source-to-image receptor distance
Answer: C
6. A radiographer is reviewing occupational radiation monitoring and wants to
identify the device used to record cumulative radiation exposure received
by personnel. Which device is appropriate?
A. Exposure indicator
B. Dosimeter
C. Ionization chamber used for AEC
D. Densitometer
Answer: B
7. A technologist wears a lead apron while performing fluoroscopic
procedures and uses a personal dosimeter according to departmental
policy. Which practice best reflects appropriate radiation protection?
pg. 2
, A. Wear the dosimeter only when a patient is radioactive
B. Store the dosimeter in the x-ray room between procedures
C. Wear and position the dosimeter according to established monitoring
procedures
D. Share the dosimeter with another technologist during the same shift
Answer: C
8. A pregnant radiologic technologist has declared the pregnancy and wants to
reduce occupational radiation exposure to the developing embryo or fetus.
Which approach is most appropriate?
A. Stop all radiographic work regardless of the procedure
B. Continue appropriate duties while following fetal monitoring and
radiation-protection requirements
C. Wear two dosimeters and ignore distance
D. Increase exposure factors so fewer images are needed
Answer: B
9. A radiographer is explaining the difference between deterministic and
stochastic radiation effects. Which statement correctly describes a
stochastic effect?
A. It has a threshold and severity increases predictably after the threshold
B. Its probability increases with radiation dose, without a recognized
threshold for the effect
C. It occurs only when a very large radiation dose is delivered at once
D. It is limited exclusively to skin erythema
Answer: B
10. A patient receives a radiation dose during an examination, and the
technologist explains that certain tissue reactions have a threshold dose
below which the effect is not expected. Which category describes these
effects?
A. Stochastic effects
B. Genetic effects only
C. Deterministic effects or tissue reactions
pg. 3
, D. Random effects without a threshold
Answer: C
11. A radiographer increases the distance from a radiation source while all
other factors remain unchanged. Which physical principle explains why the
radiation intensity decreases rapidly as distance increases?
A. Inverse square law
B. Line focus principle
C. Reciprocity law
D. Heel effect
Answer: A
12. A technologist reduces the time that a fluoroscopic beam remains activated
while maintaining the required procedure. Which radiation-protection
principle is being applied?
A. Increasing distance
B. Reducing time
C. Increasing filtration
D. Increasing magnification
Answer: B
13. A radiographer is selecting a material to attenuate x-ray photons when
designing structural radiation shielding. Which material is commonly
associated with diagnostic x-ray shielding?
A. Lead
B. Aluminum foil
C. Plastic
D. Wood
Answer: A
14. A radiographer increases filtration in an x-ray tube to remove low-energy
photons that would contribute to patient skin dose without improving
image formation. What is the primary purpose of filtration?
A. Increase scatter production
B. Remove low-energy photons from the beam
pg. 4
