Rad Review: Image Production
Questions and Answers Latest Update
100% Pass
Which factor does not influence contrast in digital radiography?
✔✔A) SID
B) kVp
C) Look-up table (LUT)
D) Scatter radiation
Which of the following reduces scatter radiation reaching the image receptor?
A) Increasing mAs
B) Increasing kVp
✔✔C) Using a grid
D) Decreasing SID
What is the purpose of automatic rescaling in digital imaging?
✔✔A) Adjust brightness and contrast
B) Increase image resolution
1
,C) Reduce patient motion
D) Enhance spatial resolution
Which interaction is responsible for producing most scatter radiation?
A) Photoelectric effect
✔✔B) Compton scattering
C) Pair production
D) Coherent scattering
What happens when SID is doubled?
A) Radiation intensity doubles
B) Image contrast decreases
C) Image detail decreases
✔✔D) Radiation intensity is reduced to one-fourth
Which term describes the difference in brightness between adjacent structures in an image?
A) Spatial resolution
B) Exposure latitude
2
,✔✔C) Image contrast
D) Quantum noise
Which technical adjustment is needed to maintain exposure when SID is increased?
A) Decrease mAs
B) Increase kVp
✔✔C) Increase mAs
D) Use a higher grid ratio
Which factor primarily controls spatial resolution in a digital image?
✔✔A) Pixel size
B) Exposure time
C) Grid ratio
D) kVp
What effect does a higher SNR (signal-to-noise ratio) have on image quality?
✔✔A) Reduced noise and better detail
B) Increased motion blur
3
, C) Lower contrast
D) Increased scatter
Which of the following improves contrast in a radiographic image?
A) Increasing focal spot size
B) Increasing OID
✔✔C) Using a higher grid ratio
D) Decreasing SID
Which of the following results in the highest patient dose?
A) Lower mAs and high kVp
B) Increased SID
✔✔C) High mAs and low kVp
D) Use of a grid
Which factor directly affects the number of X-ray photons reaching the receptor?
✔✔A) mAs
B) Grid ratio
4
Questions and Answers Latest Update
100% Pass
Which factor does not influence contrast in digital radiography?
✔✔A) SID
B) kVp
C) Look-up table (LUT)
D) Scatter radiation
Which of the following reduces scatter radiation reaching the image receptor?
A) Increasing mAs
B) Increasing kVp
✔✔C) Using a grid
D) Decreasing SID
What is the purpose of automatic rescaling in digital imaging?
✔✔A) Adjust brightness and contrast
B) Increase image resolution
1
,C) Reduce patient motion
D) Enhance spatial resolution
Which interaction is responsible for producing most scatter radiation?
A) Photoelectric effect
✔✔B) Compton scattering
C) Pair production
D) Coherent scattering
What happens when SID is doubled?
A) Radiation intensity doubles
B) Image contrast decreases
C) Image detail decreases
✔✔D) Radiation intensity is reduced to one-fourth
Which term describes the difference in brightness between adjacent structures in an image?
A) Spatial resolution
B) Exposure latitude
2
,✔✔C) Image contrast
D) Quantum noise
Which technical adjustment is needed to maintain exposure when SID is increased?
A) Decrease mAs
B) Increase kVp
✔✔C) Increase mAs
D) Use a higher grid ratio
Which factor primarily controls spatial resolution in a digital image?
✔✔A) Pixel size
B) Exposure time
C) Grid ratio
D) kVp
What effect does a higher SNR (signal-to-noise ratio) have on image quality?
✔✔A) Reduced noise and better detail
B) Increased motion blur
3
, C) Lower contrast
D) Increased scatter
Which of the following improves contrast in a radiographic image?
A) Increasing focal spot size
B) Increasing OID
✔✔C) Using a higher grid ratio
D) Decreasing SID
Which of the following results in the highest patient dose?
A) Lower mAs and high kVp
B) Increased SID
✔✔C) High mAs and low kVp
D) Use of a grid
Which factor directly affects the number of X-ray photons reaching the receptor?
✔✔A) mAs
B) Grid ratio
4
