HESI Radiation Health & Safety
Practice Exam questions with
answers
Which imaging system provides the least amount of
radiation exposure to the patient? - CORRECT ANSWERS
✔✔indirect digital imaging
What form of energy can penetrate matter? - CORRECT
ANSWERS ✔✔electromagnetic
A carious lesion is suspected on the distal of tooth #19.
Which radiograph is preferred for confirmed diagnosis? -
CORRECT ANSWERS ✔✔left molar bite wing
Which oral region is most likely to elicit a gag reflex? -
CORRECT ANSWERS ✔✔maxillary molars
When viewing a mount, which film should be placed in
the top row, far left corner? - CORRECT ANSWERS
✔✔maxillary right molar periapical
,Which agency dictates the maximum permissible dose an
operator may receive? - CORRECT ANSWERS ✔✔National
Council on Radiation Protection and Measurements
What is the weekly maximum permissible dose limit for
an operator of radiographic equipment? - CORRECT
ANSWERS ✔✔100mRem
Which error produces a darker radiographic image? -
CORRECT ANSWERS ✔✔fixer solution was too cold
Which statement is true? - CORRECT ANSWERS
✔✔Pregnant patients often refuse radiographs for purely
psychological reasons
Which is true regarding the maximum permissible dose of
an occupationally exposed pregnant worker? - CORRECT
ANSWERS ✔✔becomes the same as the general public
Which type of toxin formation in cells must operators of x-
ray equipment and patients receiving radiation be
protected? - CORRECT ANSWERS ✔✔indirect
What does the letter "N" represent in N-18? - CORRECT
ANSWERS ✔✔age of operator
, Which factors affect the sharpness of a radiographic
image? - CORRECT ANSWERS ✔✔patient movement, size
of the focal spot, size of silver halide crystals
What is the yearly maximum permissible dose, in rem, for
an operator of radiographic equipment? - CORRECT
ANSWERS ✔✔5
What effect of radiation refers to the production of
mutations? - CORRECT ANSWERS ✔✔genetic
Which suggestion is helpful when working with a patient
that has hypersensitive gag reflex? - CORRECT ANSWERS
✔✔instruct the patient to hold their leg in the air
What radiographic characteristic is affected when the PID
is changed from 16-18 inches? - CORRECT ANSWERS
✔✔less divergence beam
Which is a suitable use of a panoramic radiograph? -
CORRECT ANSWERS ✔✔assessment of eruption patterns
Practice Exam questions with
answers
Which imaging system provides the least amount of
radiation exposure to the patient? - CORRECT ANSWERS
✔✔indirect digital imaging
What form of energy can penetrate matter? - CORRECT
ANSWERS ✔✔electromagnetic
A carious lesion is suspected on the distal of tooth #19.
Which radiograph is preferred for confirmed diagnosis? -
CORRECT ANSWERS ✔✔left molar bite wing
Which oral region is most likely to elicit a gag reflex? -
CORRECT ANSWERS ✔✔maxillary molars
When viewing a mount, which film should be placed in
the top row, far left corner? - CORRECT ANSWERS
✔✔maxillary right molar periapical
,Which agency dictates the maximum permissible dose an
operator may receive? - CORRECT ANSWERS ✔✔National
Council on Radiation Protection and Measurements
What is the weekly maximum permissible dose limit for
an operator of radiographic equipment? - CORRECT
ANSWERS ✔✔100mRem
Which error produces a darker radiographic image? -
CORRECT ANSWERS ✔✔fixer solution was too cold
Which statement is true? - CORRECT ANSWERS
✔✔Pregnant patients often refuse radiographs for purely
psychological reasons
Which is true regarding the maximum permissible dose of
an occupationally exposed pregnant worker? - CORRECT
ANSWERS ✔✔becomes the same as the general public
Which type of toxin formation in cells must operators of x-
ray equipment and patients receiving radiation be
protected? - CORRECT ANSWERS ✔✔indirect
What does the letter "N" represent in N-18? - CORRECT
ANSWERS ✔✔age of operator
, Which factors affect the sharpness of a radiographic
image? - CORRECT ANSWERS ✔✔patient movement, size
of the focal spot, size of silver halide crystals
What is the yearly maximum permissible dose, in rem, for
an operator of radiographic equipment? - CORRECT
ANSWERS ✔✔5
What effect of radiation refers to the production of
mutations? - CORRECT ANSWERS ✔✔genetic
Which suggestion is helpful when working with a patient
that has hypersensitive gag reflex? - CORRECT ANSWERS
✔✔instruct the patient to hold their leg in the air
What radiographic characteristic is affected when the PID
is changed from 16-18 inches? - CORRECT ANSWERS
✔✔less divergence beam
Which is a suitable use of a panoramic radiograph? -
CORRECT ANSWERS ✔✔assessment of eruption patterns
