Limited scope of radiography practice
exam verified 2025
A change from the small focal spot to the large focal spot will result in - ANSWER-
decreased image sharpness (detail)
a health care workers single best protection against disease is - ANSWER-frequent
hand washing
a lateral projection of the face using detail screens tabletop (nongrid) is used to
demonstrate the - ANSWER-nasal bones
a limited operator innocently commits an error as a result of following the orders of his
or her employer, a physician. The employer may be held responsible according to the -
ANSWER-doctrine of respondeat superior
a limited operator who does not change linens between patients is - ANSWER-providing
an opportunity for fomite transmission
According to the Bergonie-Tribondeau law, the following types of cells are most
radiosensitive - ANSWER-embryonic tissue cells
air-filled cavities located in some bones of the face and cranium are called: - ANSWER-
paranasal sinuses
An increase in object-image receptor distance (OID) will result in - ANSWER-increased
magnification
anterior position - ANSWER-facing the film
Are gonad shields - ANSWER-Contact and shadow
As a general rule, a grid should be employed when the part thickness is greater than -
ANSWER-12 cm
At what kVp levels do Compton interactions occur - ANSWER-they occur throughout the
diagnostic radiology kVp range
Breathing technique used to advantage when taking a lateral projection of the -
ANSWER-throacic spine
communication has been "validated" when the speaker has - ANSWER-received a
response from the listener that demonstrates comprehension
,contrast - ANSWER-visible differences between 2 selected areas of density levels
within an image
Contrast is primarily controlled by altering the - ANSWER-kVp
decubitus - ANSWER-lying down with horizontal x-ray beam
density - ANSWER-degree of blackening or opacity of an image
distance, as a method used to limit operator exposure, means that - ANSWER-the
operator should maximize the distance from the source during an exposure
During digital image processing electronic collimation (masking) should not be used to
replace - ANSWER-proper radiographic collimation
dynamic range - ANSWER-range of exposures that may be captured by a detector
Erythema as it relates to radiation exposure - ANSWER-reddening of the skin caused
by a high radiation dose
gonad shielding should be used - ANSWER-when the gonads are within 5 cm of the
radiation field
how can detector fog be prevented when using computed radiography cassettes -
ANSWER-protect the cassette before and after exposure
how does filtration reduce patient exposure - ANSWER-removes longer-wavelength
photons
how does the x-ray beam restriction minimize patient exposure - ANSWER-it limits the
radiation field to the area of interest
How many vertebrae comprise of the throacic - ANSWER-12
How many vertebral are located in the cervical region of the spine - ANSWER-7
How much is the planter surface of the foot elevated from the IR for the AP oblique
projection of the foot - ANSWER-30 degrees
how much should the central ray be angled cephalad for an AP axial projection of the
chest if the patient cannot assume the lordotic position? - ANSWER-15 degrees
How often should lead aprons and gloves be checked for cracks or holes - ANSWER-
every 6 months
, How will the anode heel effect, if present, be seen on an image? - ANSWER-the image
will be lighter on the anode end than on the cathode end
If the amount of irradiated tissue increases, what happens to scatter radiation fog -
ANSWER-scatter radiation fog increases
If the radiographic image is overexposed, which of the following changes in exposure
factors should be used to correct the problem - ANSWER-decrease the mAs
in chest radiography, which body habitus is best imaged by placing the 35 x 43 cm IR
crosswise in the upright grid cabinet? - ANSWER-hypersthenic
lateral projections of the chest are taken with the left side against the IR because -
ANSWER-magnification of the cardiac silhouette is reduced with the left side neared the
IR
long scale contrast - ANSWER-slight differences between densities but total number of
densities are increased
Marks, exposures, or images on a radiograph that are not a part of the intended image
are called - ANSWER-artifacts
motion of the patient, the tube, or the IR during the exposure will result in decreased -
ANSWER-recorded detail
Mrs. Elizabeth Dunbar is 86 years old and a bit confused. She is most likely to respond
appropriately if you address her as - ANSWER-Mrs. Dunbar
Nearly all new x-ray machines manufactured today use _________________
generators - ANSWER-High-frequency
oblique position - ANSWER-erect or lying down 45degree
personnel shielding must be worn on the rare occasion during which the limited operator
may need to remain in the radiographic room during an exposure to assist the patient in
maintaining the proper position. What is the source of the greatest radiation hazard
under this circumstance.? - ANSWER-scattered radiation from the patient
Poor film or screen contact is seen on a radiograph as a decrease in what radiographic
quality factor - ANSWER-recorded detail or spatial resolution
position - ANSWER-patients physical position
posterior position - ANSWER-facing the radiographic tube
projection - ANSWER-path of the central ray
exam verified 2025
A change from the small focal spot to the large focal spot will result in - ANSWER-
decreased image sharpness (detail)
a health care workers single best protection against disease is - ANSWER-frequent
hand washing
a lateral projection of the face using detail screens tabletop (nongrid) is used to
demonstrate the - ANSWER-nasal bones
a limited operator innocently commits an error as a result of following the orders of his
or her employer, a physician. The employer may be held responsible according to the -
ANSWER-doctrine of respondeat superior
a limited operator who does not change linens between patients is - ANSWER-providing
an opportunity for fomite transmission
According to the Bergonie-Tribondeau law, the following types of cells are most
radiosensitive - ANSWER-embryonic tissue cells
air-filled cavities located in some bones of the face and cranium are called: - ANSWER-
paranasal sinuses
An increase in object-image receptor distance (OID) will result in - ANSWER-increased
magnification
anterior position - ANSWER-facing the film
Are gonad shields - ANSWER-Contact and shadow
As a general rule, a grid should be employed when the part thickness is greater than -
ANSWER-12 cm
At what kVp levels do Compton interactions occur - ANSWER-they occur throughout the
diagnostic radiology kVp range
Breathing technique used to advantage when taking a lateral projection of the -
ANSWER-throacic spine
communication has been "validated" when the speaker has - ANSWER-received a
response from the listener that demonstrates comprehension
,contrast - ANSWER-visible differences between 2 selected areas of density levels
within an image
Contrast is primarily controlled by altering the - ANSWER-kVp
decubitus - ANSWER-lying down with horizontal x-ray beam
density - ANSWER-degree of blackening or opacity of an image
distance, as a method used to limit operator exposure, means that - ANSWER-the
operator should maximize the distance from the source during an exposure
During digital image processing electronic collimation (masking) should not be used to
replace - ANSWER-proper radiographic collimation
dynamic range - ANSWER-range of exposures that may be captured by a detector
Erythema as it relates to radiation exposure - ANSWER-reddening of the skin caused
by a high radiation dose
gonad shielding should be used - ANSWER-when the gonads are within 5 cm of the
radiation field
how can detector fog be prevented when using computed radiography cassettes -
ANSWER-protect the cassette before and after exposure
how does filtration reduce patient exposure - ANSWER-removes longer-wavelength
photons
how does the x-ray beam restriction minimize patient exposure - ANSWER-it limits the
radiation field to the area of interest
How many vertebrae comprise of the throacic - ANSWER-12
How many vertebral are located in the cervical region of the spine - ANSWER-7
How much is the planter surface of the foot elevated from the IR for the AP oblique
projection of the foot - ANSWER-30 degrees
how much should the central ray be angled cephalad for an AP axial projection of the
chest if the patient cannot assume the lordotic position? - ANSWER-15 degrees
How often should lead aprons and gloves be checked for cracks or holes - ANSWER-
every 6 months
, How will the anode heel effect, if present, be seen on an image? - ANSWER-the image
will be lighter on the anode end than on the cathode end
If the amount of irradiated tissue increases, what happens to scatter radiation fog -
ANSWER-scatter radiation fog increases
If the radiographic image is overexposed, which of the following changes in exposure
factors should be used to correct the problem - ANSWER-decrease the mAs
in chest radiography, which body habitus is best imaged by placing the 35 x 43 cm IR
crosswise in the upright grid cabinet? - ANSWER-hypersthenic
lateral projections of the chest are taken with the left side against the IR because -
ANSWER-magnification of the cardiac silhouette is reduced with the left side neared the
IR
long scale contrast - ANSWER-slight differences between densities but total number of
densities are increased
Marks, exposures, or images on a radiograph that are not a part of the intended image
are called - ANSWER-artifacts
motion of the patient, the tube, or the IR during the exposure will result in decreased -
ANSWER-recorded detail
Mrs. Elizabeth Dunbar is 86 years old and a bit confused. She is most likely to respond
appropriately if you address her as - ANSWER-Mrs. Dunbar
Nearly all new x-ray machines manufactured today use _________________
generators - ANSWER-High-frequency
oblique position - ANSWER-erect or lying down 45degree
personnel shielding must be worn on the rare occasion during which the limited operator
may need to remain in the radiographic room during an exposure to assist the patient in
maintaining the proper position. What is the source of the greatest radiation hazard
under this circumstance.? - ANSWER-scattered radiation from the patient
Poor film or screen contact is seen on a radiograph as a decrease in what radiographic
quality factor - ANSWER-recorded detail or spatial resolution
position - ANSWER-patients physical position
posterior position - ANSWER-facing the radiographic tube
projection - ANSWER-path of the central ray
