HESI review ten questions &
answers
Which device makes a crackle sound upon detecting ionization if
supported with an audio amplifier and a speaker? - answer Geiger-
Muller counter
What are examples of the cardinal principles of radiation
protection? Select all that apply.
Minimize the exposure time
Increase the distance from the source
Increase the intensity of the radiographic image
Insert shielding material between the source and the patient
Maximize the effective dose during radiographic imaging - answer
Minimize the exposure time
Increase the distance from the source
Insert shielding material between the source and the patient
,A clinic used radiation detection equipment that is set to emit an
alarm at the recommended exposure levels. At which level will the
alarm sound for the second time in this type of apparatus? -
answer 10 R/hr
When the radiation exposure is 50 R/hr, the radiation detection
instrument will emit an alarm for the third time.
Which shielding devices may increase the risk of cross-infection
when performing a radiographic examination? - answer Contact
shields
What is the occupational equivalent annual dose limit for the lens
of the eye? - answer 150 mSv/year
what is the radiation does limit per year for the skin? - answer The
radiation dose limit for the skin is 500 mSv/year.
What is the does limit for a fetus in a month ? - answer The dose
limit of 0.5mSv is the equivalent embryo-fetus dose exposure for
one month.
Which statements are correct with respect to patient dose? Select
all that apply. - answer Patient dose is proportional to the intensity
of the x-ray beam.
Patient dose is directly proportional to the average beam
intensity.
,What is the recommended occupational dose limit of a barrier in a
controlled area? - answer Less than 100 mrem per week
What is the fetal dose limit during pregnancy? - answer 5 mSv
What is the annual dose limit for someone who isnt pregnant
(What is the recommended occupational dose limit for radiologic
personnel?) - answer The annual dose limit for an individual who
is not pregnant is 50 mSv
Which type of ionizing radiation can carry a positive or a negative
charge? - answer beta particles
How many neutrons does an atom with an atomic number of 20
and an atomic mass number of 40 contain? - answer 20
An atom contains a number of neutrons equal to the difference
between the atomic mass number and the atomic number. As the
atomic number of the atom under discussion is 20 and its mass
number is 40, the atom contains 20 (40 - 20) neutrons.
What is the recommended annual occupational dose limit for a
controlled area in a clinical setting? - answer 50 mSv/yr
, What is the recommended annual dose limit for a uncontrolled
area of a clinical setting - answer 1 mSv/yr.
Which type of shielding can be manipulated to extend into the
path of the beam during a radiologic procedure? - answer shadow
shield
How is dose area product (DAP) affected by an increase in field
size? - answer Increases
As the field size increases, more tissue is exposed to the
radiation. More exposed tissue results in an increase in exposure
to the patient.
What is the best reason for collimating while using automatic
exposure control? - answer To reduce the patient's dose
Why must a student's unsatisfactory radiographs be repeated in
the presence of a qualified practitioner? - answer Quality patient
care and protection from radiation must be ensured and provided.
A 6-month-old infant requires a radiography procedure. Which
action will the radiologic technologist be most likely to take in
order to successfully execute the procedure? - answer Ask the
mother of the infant to put on a protective apron and help hold
the baby
answers
Which device makes a crackle sound upon detecting ionization if
supported with an audio amplifier and a speaker? - answer Geiger-
Muller counter
What are examples of the cardinal principles of radiation
protection? Select all that apply.
Minimize the exposure time
Increase the distance from the source
Increase the intensity of the radiographic image
Insert shielding material between the source and the patient
Maximize the effective dose during radiographic imaging - answer
Minimize the exposure time
Increase the distance from the source
Insert shielding material between the source and the patient
,A clinic used radiation detection equipment that is set to emit an
alarm at the recommended exposure levels. At which level will the
alarm sound for the second time in this type of apparatus? -
answer 10 R/hr
When the radiation exposure is 50 R/hr, the radiation detection
instrument will emit an alarm for the third time.
Which shielding devices may increase the risk of cross-infection
when performing a radiographic examination? - answer Contact
shields
What is the occupational equivalent annual dose limit for the lens
of the eye? - answer 150 mSv/year
what is the radiation does limit per year for the skin? - answer The
radiation dose limit for the skin is 500 mSv/year.
What is the does limit for a fetus in a month ? - answer The dose
limit of 0.5mSv is the equivalent embryo-fetus dose exposure for
one month.
Which statements are correct with respect to patient dose? Select
all that apply. - answer Patient dose is proportional to the intensity
of the x-ray beam.
Patient dose is directly proportional to the average beam
intensity.
,What is the recommended occupational dose limit of a barrier in a
controlled area? - answer Less than 100 mrem per week
What is the fetal dose limit during pregnancy? - answer 5 mSv
What is the annual dose limit for someone who isnt pregnant
(What is the recommended occupational dose limit for radiologic
personnel?) - answer The annual dose limit for an individual who
is not pregnant is 50 mSv
Which type of ionizing radiation can carry a positive or a negative
charge? - answer beta particles
How many neutrons does an atom with an atomic number of 20
and an atomic mass number of 40 contain? - answer 20
An atom contains a number of neutrons equal to the difference
between the atomic mass number and the atomic number. As the
atomic number of the atom under discussion is 20 and its mass
number is 40, the atom contains 20 (40 - 20) neutrons.
What is the recommended annual occupational dose limit for a
controlled area in a clinical setting? - answer 50 mSv/yr
, What is the recommended annual dose limit for a uncontrolled
area of a clinical setting - answer 1 mSv/yr.
Which type of shielding can be manipulated to extend into the
path of the beam during a radiologic procedure? - answer shadow
shield
How is dose area product (DAP) affected by an increase in field
size? - answer Increases
As the field size increases, more tissue is exposed to the
radiation. More exposed tissue results in an increase in exposure
to the patient.
What is the best reason for collimating while using automatic
exposure control? - answer To reduce the patient's dose
Why must a student's unsatisfactory radiographs be repeated in
the presence of a qualified practitioner? - answer Quality patient
care and protection from radiation must be ensured and provided.
A 6-month-old infant requires a radiography procedure. Which
action will the radiologic technologist be most likely to take in
order to successfully execute the procedure? - answer Ask the
mother of the infant to put on a protective apron and help hold
the baby
