FINAL TEST QUESTIONS (Core)
Questions And Answers With Verified
Solutions Already Passed Latest
Updated 2025
The Type of dose response curve used to predict genetic effects and some somatic
effects is? - ANSWER✔✔ Linear Nonthreshold
The Type of dose response curve used to predict somatic effects is? -
ANSWER✔✔ nonlinear threshold
what is the effect on Relative Biologic Effectiveness (RBE) as linear Energy
Transfer(LET) increases? - ANSWER✔✔ As LET increases, RBE increases
In 1906 Bergonie and Tribondeau established a law which states that cells are more
radiosensitive if they? - ANSWER✔✔ are stem cells or are young cells
How are wavelength and energy related? - ANSWER✔✔ Inversely
Where in the x-ray circuit is a step down transformer located? - ANSWER✔✔
Filament Circuit
What is the Relationship Between KVP and the half-value layer? - ANSWER✔✔
as the KVP increases, the HVL Increases
The term for describing the electrons produced within the x-ray tube is? -
ANSWER✔✔ Thermionic Emission
A Photostimulable Phosphor Plate (PSP) is used with? - ANSWER✔✔ Computed
Radiography (CR)
Which of the following occurs during Bremsstrahlung radiation Production? -
ANSWER✔✔ An Electron Approaching a positive Nuclear charge changes
direction and loses energy
,which of the following image receptor (IR) system speed will result in the lowest
patient dose? - ANSWER✔✔ Faster-Speed IR system lowers dose
What will serve to increase the effective energy of the x-ray beam? -
ANSWER✔✔ Increase in KVP
The essential Function of the Photomultiplier in AEC is to? - ANSWER✔✔
terminate the x-ray exposure once the image is correctly exposed
What is the National Council on Radiation Protection (NCRP) recommendation for
the amount of filtration? - ANSWER✔✔ 205 MM Aluminum Equivalent
what are the three principles of radiation safety? - ANSWER✔✔ time, distance
and shielding
what are the types of gonad shields? - ANSWER✔✔ Flat contact shield, shadow
shield
what is the device that Allows the radiographer to vary the size of the radiation
field? - ANSWER✔✔ Collimator
what is the greatest cause of unnecessary radiation exposure to patients that can be
controlled by the radiographer? - ANSWER✔✔ Repeat Exposures
which of the following will result in Increased radiographic density? -
ANSWER✔✔ Increased mAs
what are the four primary factors of radiographic quality (geometric and
photographic properties)? - ANSWER✔✔ Density, Contrast, recorded detail and
distortion
an increase in (OID) object-image receptor distance will result in? - ANSWER✔✔
Magnification of the body part
what will increase recorded detail? - ANSWER✔✔ using the smallest focal spot
available
, what is the action of the developer in an automatic processor? - ANSWER✔✔
converts the latent image into a manifest image
the relationship between SID and the beam intensity is expressed in? -
ANSWER✔✔ The inverse square law
What is anaphylaxis? - ANSWER✔✔ a sever Allergic reaction
if the radiograph is overexposed which of the following changes in the exposure
factors should be used to correct the problem? - ANSWER✔✔ Decrease the mAs
which screen or film-screen image artifact looks like lightning? - ANSWER✔✔
static artifact
if any motion occurs from the patient, x-ray tube or IR during the exposure what
will it result in? - ANSWER✔✔ distortion
what change will decrease the patient dose? - ANSWER✔✔ Increasing the kVp
using the 15% rule and decreasing the mAs to compensate
what three factors influence the production of scattered radiation? - ANSWER✔✔
kVp, Size of radiation field, the size of the patient
what is the IR used in computed radiography (CR)? - ANSWER✔✔
photostimulable phosphor (PSP) Plate
the penetrating power of the beam is controlled by what factor? - ANSWER✔✔
the kVp selected
Technique charts are based on patient body part measurement obtained by use of
an x-ray calipers are expressed in? - ANSWER✔✔ Thickness in Centimeters
what is the typical voltage ripple in a high frequency generator? - ANSWER✔✔
less than 4%
according to the current NCRP standards a radiation workers cumulative dose
equivalent limit is determined by? - ANSWER✔✔ Age x 10 mSv (1 rem)
Questions And Answers With Verified
Solutions Already Passed Latest
Updated 2025
The Type of dose response curve used to predict genetic effects and some somatic
effects is? - ANSWER✔✔ Linear Nonthreshold
The Type of dose response curve used to predict somatic effects is? -
ANSWER✔✔ nonlinear threshold
what is the effect on Relative Biologic Effectiveness (RBE) as linear Energy
Transfer(LET) increases? - ANSWER✔✔ As LET increases, RBE increases
In 1906 Bergonie and Tribondeau established a law which states that cells are more
radiosensitive if they? - ANSWER✔✔ are stem cells or are young cells
How are wavelength and energy related? - ANSWER✔✔ Inversely
Where in the x-ray circuit is a step down transformer located? - ANSWER✔✔
Filament Circuit
What is the Relationship Between KVP and the half-value layer? - ANSWER✔✔
as the KVP increases, the HVL Increases
The term for describing the electrons produced within the x-ray tube is? -
ANSWER✔✔ Thermionic Emission
A Photostimulable Phosphor Plate (PSP) is used with? - ANSWER✔✔ Computed
Radiography (CR)
Which of the following occurs during Bremsstrahlung radiation Production? -
ANSWER✔✔ An Electron Approaching a positive Nuclear charge changes
direction and loses energy
,which of the following image receptor (IR) system speed will result in the lowest
patient dose? - ANSWER✔✔ Faster-Speed IR system lowers dose
What will serve to increase the effective energy of the x-ray beam? -
ANSWER✔✔ Increase in KVP
The essential Function of the Photomultiplier in AEC is to? - ANSWER✔✔
terminate the x-ray exposure once the image is correctly exposed
What is the National Council on Radiation Protection (NCRP) recommendation for
the amount of filtration? - ANSWER✔✔ 205 MM Aluminum Equivalent
what are the three principles of radiation safety? - ANSWER✔✔ time, distance
and shielding
what are the types of gonad shields? - ANSWER✔✔ Flat contact shield, shadow
shield
what is the device that Allows the radiographer to vary the size of the radiation
field? - ANSWER✔✔ Collimator
what is the greatest cause of unnecessary radiation exposure to patients that can be
controlled by the radiographer? - ANSWER✔✔ Repeat Exposures
which of the following will result in Increased radiographic density? -
ANSWER✔✔ Increased mAs
what are the four primary factors of radiographic quality (geometric and
photographic properties)? - ANSWER✔✔ Density, Contrast, recorded detail and
distortion
an increase in (OID) object-image receptor distance will result in? - ANSWER✔✔
Magnification of the body part
what will increase recorded detail? - ANSWER✔✔ using the smallest focal spot
available
, what is the action of the developer in an automatic processor? - ANSWER✔✔
converts the latent image into a manifest image
the relationship between SID and the beam intensity is expressed in? -
ANSWER✔✔ The inverse square law
What is anaphylaxis? - ANSWER✔✔ a sever Allergic reaction
if the radiograph is overexposed which of the following changes in the exposure
factors should be used to correct the problem? - ANSWER✔✔ Decrease the mAs
which screen or film-screen image artifact looks like lightning? - ANSWER✔✔
static artifact
if any motion occurs from the patient, x-ray tube or IR during the exposure what
will it result in? - ANSWER✔✔ distortion
what change will decrease the patient dose? - ANSWER✔✔ Increasing the kVp
using the 15% rule and decreasing the mAs to compensate
what three factors influence the production of scattered radiation? - ANSWER✔✔
kVp, Size of radiation field, the size of the patient
what is the IR used in computed radiography (CR)? - ANSWER✔✔
photostimulable phosphor (PSP) Plate
the penetrating power of the beam is controlled by what factor? - ANSWER✔✔
the kVp selected
Technique charts are based on patient body part measurement obtained by use of
an x-ray calipers are expressed in? - ANSWER✔✔ Thickness in Centimeters
what is the typical voltage ripple in a high frequency generator? - ANSWER✔✔
less than 4%
according to the current NCRP standards a radiation workers cumulative dose
equivalent limit is determined by? - ANSWER✔✔ Age x 10 mSv (1 rem)
