HESI exam, radiologic technology, radiology
questions, diagnostic imaging, digital
radiography, radiation protection, anatomy
positioning, radiology safety, x-ray
procedures, radiologic technologist review.
Latest Updated Study Guide 2025/2026
Which item can be used as an indicator of the quality of the diagnostic x-ray beam? -
ansKilovoltage peak (kVp)
Which condition represents the most likely indication for an anteroposterior (AP) chest
projection with the patient in the left lateral decubitis position? - ansEffusion of the left lung
Which action is best taught to the patient using the communication technique of
demonstration? - ansThe correct positioning for a particular projection
Where is edge enhancement post processing most helpful in digital radiography? - ansLow
contrast studies
Which is the most likely cause of a histogram error? - ansSelection of an incorrect exam from
the look-up table
During preparation for a surgical procedure, an unopened sterile package becomes damp
from an accidental spill of saline. Which response is most appropriate? - ansConsider the
package contaminated and replace it with a sterile item.
Which is the most appropriate guideline to follow when radiographing patients in their late
adult years? - ansSpeak slowly and in a low tone of voice
What is the term for the adjustment of image brightness, regardless of exposure received? -
ansRescaling
How does an increase in nose affect the quality of a digital image? - ansContrast is decreased
A patient in the radiology department suddenly develops a nosebleed. The radiographer
instruct the patient to lean forward and pinch the affected nostril against the midline nasal
cartilage, but the bleeding does not stop. What should the radiographer do next? - ansApply a
moist compress
Which position should a patient be placed in immediately following a seizure? - ansLateral
recumbent
How can magnification of the heart be reduced when performing a chest x-ray? - ansUsing 72
in SID
Which accurately describes the radiation dose absorbed by bone marrow? - ansThe dose will
be less than the entrance skin exposure
What is the function of a rectifier? - ansConvert alternating current to pulsating direct current
How often should lead aprons be evaluated to determine if crack or holes are present? -
ansAnnually
A lateral L5/S1 lumbosacral junction is performed with the CR directed 2 inches anterior
superior iliac spine (ASIS) and 1 1/2 inches inferior to the iliac crest. Which statement
describes this method? - ansThe central ray will be well anterior to the L5/S1 junction
What is the magnitude of the angle formed by the intervertebral foramina and the midsagittal
plane in the thoracic spine? - ans90 degrees
What is the result if pixel depth is decreased? - ansContrast resolution is decreased
Which legal concept is violated by a radiographer who performs an examination without an
examination order? - ansBattery
, HESI exam, radiologic technology, radiology
questions, diagnostic imaging, digital
radiography, radiation protection, anatomy
positioning, radiology safety, x-ray
procedures, radiologic technologist review.
Latest Updated Study Guide 2025/2026
Which statement is true regarding exposure indicator and the evaluation of digital images? -
ansExposure indicator must be reviewed with every image and must fall within the
manufacturerer's acceptable range
Which term best describes the process of cleaning the surfaces in a radiology department with
10% bleach solution in water? - ansMedical asepsis
Which central ray angle is best for heavy, wide-hipped patients for lateral lumbar
projections? - ans5 degrees caudal
Which steps increase contrast in fluoroscopy? (Select the two that apply) - ansUse a smaller
collimator field, reduce kilovolts peak (kVp)
In which clinical situation has valid consent been obtained? - ansA 16 year old mother
provides consent to perform an x-ray on her 6 month old child
Why is the left lateral decubitus position recommended as part of an acute abdominal series?
- ansFree air is demonstrated away from the gastric bubble.
Which digital communication network is used to store patient billing information? - ansHIS
Which is the most appropriate reason for the application of gonadal shielding? - ansTo safe
guard the reproductive potential of patients
Place these bit depths in order from the one that will produce the least number of grays to the
one that will produce the greatest number of grays. - ans8, 10, 12, 14
Which nonverbal cue best demonstrates attentiveness and concern for a patient who is giving
a medical history? - ansConsistent eye contact
When dealing with radiation exposure, what is the most effective protection for a
radiographer? - ansDistance
On an accurately positioned posterior (PA) chest radiograph, the manubrium of the sternum is
seen at the level of which thoracic vertebrae when the patient is sthenic? - ansFourth
Which grid ratio results in the lowest dose to a patient, because less milliampere-seconds
(mAs) is required? - ans5:1
Why should computed radiography (CR) image receptors (IR) be erased if they haven't been
used? - ansRemove fog from background radiation
Which factor determines the amount of energy of a bremsstrahlung x-ray? - ansThe distance
between the filament electron and the nucleus of the target atom
What is the wide spread of Methicillin-resistant Staphylococcus aureus (MRSA) mainly
attributed to? - ansOver prescription of antibiotics and poor infection control practices
A patient with a left anterior rib injury, in which position should the patient be placed for the
oblique image? - ans45 degree right anterior oblique (RAO)
In a typical x-ray examination room, what is considered a secondary protective barrier? -
ansCeiling
According to Merrill's Atlas, which location represents the correct central ray (CR) placement
for an axiolateral oblique mandible projection for the ramus? - ansThe region of interest
A posteroanterior (PA) chest radiograph demonstrates the left clavicle closer to the center of
the spine than the right clavicle. Which action should the radiographer take? - ansTurn right
side closer to image receptor (IR)
questions, diagnostic imaging, digital
radiography, radiation protection, anatomy
positioning, radiology safety, x-ray
procedures, radiologic technologist review.
Latest Updated Study Guide 2025/2026
Which item can be used as an indicator of the quality of the diagnostic x-ray beam? -
ansKilovoltage peak (kVp)
Which condition represents the most likely indication for an anteroposterior (AP) chest
projection with the patient in the left lateral decubitis position? - ansEffusion of the left lung
Which action is best taught to the patient using the communication technique of
demonstration? - ansThe correct positioning for a particular projection
Where is edge enhancement post processing most helpful in digital radiography? - ansLow
contrast studies
Which is the most likely cause of a histogram error? - ansSelection of an incorrect exam from
the look-up table
During preparation for a surgical procedure, an unopened sterile package becomes damp
from an accidental spill of saline. Which response is most appropriate? - ansConsider the
package contaminated and replace it with a sterile item.
Which is the most appropriate guideline to follow when radiographing patients in their late
adult years? - ansSpeak slowly and in a low tone of voice
What is the term for the adjustment of image brightness, regardless of exposure received? -
ansRescaling
How does an increase in nose affect the quality of a digital image? - ansContrast is decreased
A patient in the radiology department suddenly develops a nosebleed. The radiographer
instruct the patient to lean forward and pinch the affected nostril against the midline nasal
cartilage, but the bleeding does not stop. What should the radiographer do next? - ansApply a
moist compress
Which position should a patient be placed in immediately following a seizure? - ansLateral
recumbent
How can magnification of the heart be reduced when performing a chest x-ray? - ansUsing 72
in SID
Which accurately describes the radiation dose absorbed by bone marrow? - ansThe dose will
be less than the entrance skin exposure
What is the function of a rectifier? - ansConvert alternating current to pulsating direct current
How often should lead aprons be evaluated to determine if crack or holes are present? -
ansAnnually
A lateral L5/S1 lumbosacral junction is performed with the CR directed 2 inches anterior
superior iliac spine (ASIS) and 1 1/2 inches inferior to the iliac crest. Which statement
describes this method? - ansThe central ray will be well anterior to the L5/S1 junction
What is the magnitude of the angle formed by the intervertebral foramina and the midsagittal
plane in the thoracic spine? - ans90 degrees
What is the result if pixel depth is decreased? - ansContrast resolution is decreased
Which legal concept is violated by a radiographer who performs an examination without an
examination order? - ansBattery
, HESI exam, radiologic technology, radiology
questions, diagnostic imaging, digital
radiography, radiation protection, anatomy
positioning, radiology safety, x-ray
procedures, radiologic technologist review.
Latest Updated Study Guide 2025/2026
Which statement is true regarding exposure indicator and the evaluation of digital images? -
ansExposure indicator must be reviewed with every image and must fall within the
manufacturerer's acceptable range
Which term best describes the process of cleaning the surfaces in a radiology department with
10% bleach solution in water? - ansMedical asepsis
Which central ray angle is best for heavy, wide-hipped patients for lateral lumbar
projections? - ans5 degrees caudal
Which steps increase contrast in fluoroscopy? (Select the two that apply) - ansUse a smaller
collimator field, reduce kilovolts peak (kVp)
In which clinical situation has valid consent been obtained? - ansA 16 year old mother
provides consent to perform an x-ray on her 6 month old child
Why is the left lateral decubitus position recommended as part of an acute abdominal series?
- ansFree air is demonstrated away from the gastric bubble.
Which digital communication network is used to store patient billing information? - ansHIS
Which is the most appropriate reason for the application of gonadal shielding? - ansTo safe
guard the reproductive potential of patients
Place these bit depths in order from the one that will produce the least number of grays to the
one that will produce the greatest number of grays. - ans8, 10, 12, 14
Which nonverbal cue best demonstrates attentiveness and concern for a patient who is giving
a medical history? - ansConsistent eye contact
When dealing with radiation exposure, what is the most effective protection for a
radiographer? - ansDistance
On an accurately positioned posterior (PA) chest radiograph, the manubrium of the sternum is
seen at the level of which thoracic vertebrae when the patient is sthenic? - ansFourth
Which grid ratio results in the lowest dose to a patient, because less milliampere-seconds
(mAs) is required? - ans5:1
Why should computed radiography (CR) image receptors (IR) be erased if they haven't been
used? - ansRemove fog from background radiation
Which factor determines the amount of energy of a bremsstrahlung x-ray? - ansThe distance
between the filament electron and the nucleus of the target atom
What is the wide spread of Methicillin-resistant Staphylococcus aureus (MRSA) mainly
attributed to? - ansOver prescription of antibiotics and poor infection control practices
A patient with a left anterior rib injury, in which position should the patient be placed for the
oblique image? - ans45 degree right anterior oblique (RAO)
In a typical x-ray examination room, what is considered a secondary protective barrier? -
ansCeiling
According to Merrill's Atlas, which location represents the correct central ray (CR) placement
for an axiolateral oblique mandible projection for the ramus? - ansThe region of interest
A posteroanterior (PA) chest radiograph demonstrates the left clavicle closer to the center of
the spine than the right clavicle. Which action should the radiographer take? - ansTurn right
side closer to image receptor (IR)
