HESI RAD V2 EXAM questions with
answers
A step-up transformer with 300 turns in the primary coil is
supplied with 220 volts to this primary. How many
secondary turns are needed to produce a 66,000 volt
output? - CORRECT ANSWERS ✔✔90,000 turns
What is the result if the total lead content of a grid is
decreased? - CORRECT ANSWERS ✔✔Decreased scatter
absorption.
What is the purpose of shuttering? - CORRECT ANSWERS
✔✔To black out areas of light and make fine details more
visible.
In conventional tomography, the radiographer is able to
control the thickness of the tomographic slice by altering
which of the following? - CORRECT ANSWERS
✔✔Exposure angle.
Which type of exposure technique chart would allow the
radiographer to make small, fine adjustments for
orthopedic work? - CORRECT ANSWERS ✔✔Variable
kilovolts peak (kVp).
,An imaging department, having difficulty obtaining
acceptable tangential patella images, has opted to have
the post processing mode set to "fixed" for all patella
images. Why is this a good choice? - CORRECT ANSWERS
✔✔Fixed mode works well for exams where it is difficult to
center the image on the image receptor (IR).
Pelvis routine calls for an anteroposterior (AP) with a
perpendicular central ray (CR), and an axial AP with a 40
degree cephalic angle. Using a caliper measurement, the
technique chart yields a perfect set of exposure factors
for the perpendicular AP. How will the necessary exposure
factors for the axial differ from the perpendicular AP? -
CORRECT ANSWERS ✔✔Greater measurement, higher
kilovolts peak (kVp) and milliampere-seconds (mAs).
Which advantage does a 500 milliampere (mA) station
have over a 200 mA station? - CORRECT ANSWERS
✔✔Increased photon flux to the image receptor (IR)
A radiographer is performing a portable abdomen is using
an image receptor with an 8:1 grid. The radiographer
knows a technique for the abdomen using a 12:1 grid is
80 kilovolts peak (kVp) using 50 milliampere-seconds
(mAs). Which would the new technique be in order to
,maintain image quality? - CORRECT ANSWERS ✔✔80 kVp
@ 40 mAs.
If 7 milliampere-seconds (mAs) provides optimal density
without a grid, which mAs should be used with a 12:1
grid? - CORRECT ANSWERS ✔✔35
How does a radiographer maximize signal to digital
image receptors? (Select the three that apply.) - CORRECT
ANSWERS ✔✔Compression of the body part.
Shorter source to image receptor distance (SID).
Longer exposure time.
What results from utilizing a lower ratio grid? - CORRECT
ANSWERS ✔✔Lower contrast, but greater error margin in
central ray (CR) placement.
Why is it important for the radiographer to observe the
milliampere seconds (mAs) readout at the end of each
exposure when using automatic exposure control (AEC)? -
CORRECT ANSWERS ✔✔This value may be used as a
basis for calculating manual techniques.
How does emphysema impact radiographic imaging of
the chest? - CORRECT ANSWERS ✔✔Emphysema is a
, destructive disease, meaning the chest tissue is more
radiolucent.
If computed radiography (CR) imaging plates (IP) haven't
been used, how often should they be erased? - CORRECT
ANSWERS ✔✔48 hours.
In which way can the radiographer minimize motion due
to peristalsis? - CORRECT ANSWERS ✔✔Decrease
exposure time.
Which best describes anode heel effect? - CORRECT
ANSWERS ✔✔A phenomenon where x-ray intensity is
greater under the cathode.
Which will increase the appearance of noise in a digital
image, assuming only the named factor in each response
is changed? - CORRECT ANSWERS ✔✔Large matrix.
Which is the preferred method for indicating the correct
anatomic side on a radiographic image? - CORRECT
ANSWERS ✔✔Place a side marker directly on the image
receptor (IR) prior to exposure.
answers
A step-up transformer with 300 turns in the primary coil is
supplied with 220 volts to this primary. How many
secondary turns are needed to produce a 66,000 volt
output? - CORRECT ANSWERS ✔✔90,000 turns
What is the result if the total lead content of a grid is
decreased? - CORRECT ANSWERS ✔✔Decreased scatter
absorption.
What is the purpose of shuttering? - CORRECT ANSWERS
✔✔To black out areas of light and make fine details more
visible.
In conventional tomography, the radiographer is able to
control the thickness of the tomographic slice by altering
which of the following? - CORRECT ANSWERS
✔✔Exposure angle.
Which type of exposure technique chart would allow the
radiographer to make small, fine adjustments for
orthopedic work? - CORRECT ANSWERS ✔✔Variable
kilovolts peak (kVp).
,An imaging department, having difficulty obtaining
acceptable tangential patella images, has opted to have
the post processing mode set to "fixed" for all patella
images. Why is this a good choice? - CORRECT ANSWERS
✔✔Fixed mode works well for exams where it is difficult to
center the image on the image receptor (IR).
Pelvis routine calls for an anteroposterior (AP) with a
perpendicular central ray (CR), and an axial AP with a 40
degree cephalic angle. Using a caliper measurement, the
technique chart yields a perfect set of exposure factors
for the perpendicular AP. How will the necessary exposure
factors for the axial differ from the perpendicular AP? -
CORRECT ANSWERS ✔✔Greater measurement, higher
kilovolts peak (kVp) and milliampere-seconds (mAs).
Which advantage does a 500 milliampere (mA) station
have over a 200 mA station? - CORRECT ANSWERS
✔✔Increased photon flux to the image receptor (IR)
A radiographer is performing a portable abdomen is using
an image receptor with an 8:1 grid. The radiographer
knows a technique for the abdomen using a 12:1 grid is
80 kilovolts peak (kVp) using 50 milliampere-seconds
(mAs). Which would the new technique be in order to
,maintain image quality? - CORRECT ANSWERS ✔✔80 kVp
@ 40 mAs.
If 7 milliampere-seconds (mAs) provides optimal density
without a grid, which mAs should be used with a 12:1
grid? - CORRECT ANSWERS ✔✔35
How does a radiographer maximize signal to digital
image receptors? (Select the three that apply.) - CORRECT
ANSWERS ✔✔Compression of the body part.
Shorter source to image receptor distance (SID).
Longer exposure time.
What results from utilizing a lower ratio grid? - CORRECT
ANSWERS ✔✔Lower contrast, but greater error margin in
central ray (CR) placement.
Why is it important for the radiographer to observe the
milliampere seconds (mAs) readout at the end of each
exposure when using automatic exposure control (AEC)? -
CORRECT ANSWERS ✔✔This value may be used as a
basis for calculating manual techniques.
How does emphysema impact radiographic imaging of
the chest? - CORRECT ANSWERS ✔✔Emphysema is a
, destructive disease, meaning the chest tissue is more
radiolucent.
If computed radiography (CR) imaging plates (IP) haven't
been used, how often should they be erased? - CORRECT
ANSWERS ✔✔48 hours.
In which way can the radiographer minimize motion due
to peristalsis? - CORRECT ANSWERS ✔✔Decrease
exposure time.
Which best describes anode heel effect? - CORRECT
ANSWERS ✔✔A phenomenon where x-ray intensity is
greater under the cathode.
Which will increase the appearance of noise in a digital
image, assuming only the named factor in each response
is changed? - CORRECT ANSWERS ✔✔Large matrix.
Which is the preferred method for indicating the correct
anatomic side on a radiographic image? - CORRECT
ANSWERS ✔✔Place a side marker directly on the image
receptor (IR) prior to exposure.
