X-Ray Physics Exam 3 Questions And
Answers Latest Update 2025
Absorb scatter radiation before it strikes the IR -
correct answer ✅What is the purpose of a grid?
After the patient, but before the IR -
correct answer ✅To properly function, where must a grid be
located in relation to the patient?
By absorbing scatter before it strikes the IR -
correct answer ✅How does a grid increase image contrast?
Grid requires an increase in mAs which increases patient dose -
correct answer ✅How does a grid affect patient dose?
10cm, 60kVp -
correct answer ✅A grid is employed when a body part thickness
exceeds ___ and kVp is above __.
Grid construction -
correct answer ✅Series of radiopaque strips and radiolucent
interspace strips bonded together then sliced in a thin sheet
,X-Ray Physics Exam 3 Questions And
Answers Latest Update 2025
Lead -
correct answer ✅What is the material of choice for the
radiopaque strips?
Ratio of height of lead strips to the distance between the strips -
correct answer ✅What is the grid ratio?
Parallel grid -
correct answer ✅Lead strips and interspace strips run parallel to
one another
focused grid -
correct answer ✅Central grid strips are parallel and as the strips
move away form the central axis they become more and more
inclined
Reciprocating and oscillating -
correct answer ✅What are the two types of moving grids?
Grid decreases radiographic density -
correct answer ✅What is the relationship between grid and
radiographic density?
, X-Ray Physics Exam 3 Questions And
Answers Latest Update 2025
Air-gap technique -
correct answer ✅Placing the patient at an increased OID, creating
a gap between the part and IR
Magnification of the part
Loss of recorded detail -
correct answer ✅What are the disadvantages of air-gap
technique?
Exposure and wet processing -
correct answer ✅What are the two general steps to image
formation?
exposure step -
correct answer ✅- Photons strike the silver halide crystals that are
suspended in the film emulsion, a photoelectric interaction takes
place that alters the structure of the crystals
- Forms the "latent" image
processing step -
correct answer ✅- The processing chemicals turn the altered silver
halide crystals a shade of black that is proportional to the number
of photons that struck the individual crystal
Answers Latest Update 2025
Absorb scatter radiation before it strikes the IR -
correct answer ✅What is the purpose of a grid?
After the patient, but before the IR -
correct answer ✅To properly function, where must a grid be
located in relation to the patient?
By absorbing scatter before it strikes the IR -
correct answer ✅How does a grid increase image contrast?
Grid requires an increase in mAs which increases patient dose -
correct answer ✅How does a grid affect patient dose?
10cm, 60kVp -
correct answer ✅A grid is employed when a body part thickness
exceeds ___ and kVp is above __.
Grid construction -
correct answer ✅Series of radiopaque strips and radiolucent
interspace strips bonded together then sliced in a thin sheet
,X-Ray Physics Exam 3 Questions And
Answers Latest Update 2025
Lead -
correct answer ✅What is the material of choice for the
radiopaque strips?
Ratio of height of lead strips to the distance between the strips -
correct answer ✅What is the grid ratio?
Parallel grid -
correct answer ✅Lead strips and interspace strips run parallel to
one another
focused grid -
correct answer ✅Central grid strips are parallel and as the strips
move away form the central axis they become more and more
inclined
Reciprocating and oscillating -
correct answer ✅What are the two types of moving grids?
Grid decreases radiographic density -
correct answer ✅What is the relationship between grid and
radiographic density?
, X-Ray Physics Exam 3 Questions And
Answers Latest Update 2025
Air-gap technique -
correct answer ✅Placing the patient at an increased OID, creating
a gap between the part and IR
Magnification of the part
Loss of recorded detail -
correct answer ✅What are the disadvantages of air-gap
technique?
Exposure and wet processing -
correct answer ✅What are the two general steps to image
formation?
exposure step -
correct answer ✅- Photons strike the silver halide crystals that are
suspended in the film emulsion, a photoelectric interaction takes
place that alters the structure of the crystals
- Forms the "latent" image
processing step -
correct answer ✅- The processing chemicals turn the altered silver
halide crystals a shade of black that is proportional to the number
of photons that struck the individual crystal
