ARRT Radiography Exam Review
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What type of artifact appears as streaks or lines due to detector malfunction?
✔✔Detector pattern artifact
What is the main purpose of a Bucky tray?
✔✔To hold the image receptor and grid in position during exposure
What is the main cause of involuntary motion artifacts?
✔✔Patient physiological activity such as heartbeat or peristalsis
Which interaction is primarily responsible for the production of characteristic X-rays in the
anode?
✔✔Photoelectric effect within the anode material
What is the effect of a short exposure time on image quality?
✔✔Reduces motion artifact but requires sufficient mAs to maintain density
1
,Which digital imaging factor primarily affects contrast resolution?
✔✔Bit depth of the detector
Which type of filter absorbs low-energy X-rays and reduces patient skin dose?
✔✔Aluminum filter
Which artifact occurs when anatomy outside the FOV is projected onto the image?
✔✔Aliasing or wrap-around artifact
What is the primary reason for using a large focal spot for chest imaging?
✔✔To allow higher tube currents and prevent tube overheating while maintaining adequate
penetration
Which effect occurs when the OID is increased?
✔✔Magnification increases and spatial resolution decreases
Which technique improves spatial resolution for imaging small structures?
2
,✔✔Use a smaller focal spot and reduce OID
Which X-ray interaction contributes most to image contrast in soft tissue?
✔✔Photoelectric effect
Which type of digital detector converts X-rays into light, then into an electronic signal?
✔✔Indirect flat-panel detector
What is the effect of increasing SID on magnification and spatial resolution?
✔✔Magnification decreases and spatial resolution improves
Which artifact is caused by patient movement during exposure?
✔✔Motion blur
Which factor primarily reduces scatter and improves image contrast?
✔✔Use of a grid
What is the primary purpose of using a grid in radiography?
3
, ✔✔To reduce scatter radiation reaching the image receptor and improve image contrast
Which factor directly affects radiographic density the most?
✔✔mAs
What type of radiation interaction is primarily responsible for producing contrast in soft tissue?
✔✔Photoelectric effect
How does increasing the SID affect image magnification?
✔✔It decreases magnification and improves spatial resolution
What is the primary function of the X-ray tube filament?
✔✔To produce electrons via thermionic emission
Which radiographic factor primarily controls the energy of X-ray photons?
✔✔kVp
What is the main purpose of using a compensating filter?
4
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What type of artifact appears as streaks or lines due to detector malfunction?
✔✔Detector pattern artifact
What is the main purpose of a Bucky tray?
✔✔To hold the image receptor and grid in position during exposure
What is the main cause of involuntary motion artifacts?
✔✔Patient physiological activity such as heartbeat or peristalsis
Which interaction is primarily responsible for the production of characteristic X-rays in the
anode?
✔✔Photoelectric effect within the anode material
What is the effect of a short exposure time on image quality?
✔✔Reduces motion artifact but requires sufficient mAs to maintain density
1
,Which digital imaging factor primarily affects contrast resolution?
✔✔Bit depth of the detector
Which type of filter absorbs low-energy X-rays and reduces patient skin dose?
✔✔Aluminum filter
Which artifact occurs when anatomy outside the FOV is projected onto the image?
✔✔Aliasing or wrap-around artifact
What is the primary reason for using a large focal spot for chest imaging?
✔✔To allow higher tube currents and prevent tube overheating while maintaining adequate
penetration
Which effect occurs when the OID is increased?
✔✔Magnification increases and spatial resolution decreases
Which technique improves spatial resolution for imaging small structures?
2
,✔✔Use a smaller focal spot and reduce OID
Which X-ray interaction contributes most to image contrast in soft tissue?
✔✔Photoelectric effect
Which type of digital detector converts X-rays into light, then into an electronic signal?
✔✔Indirect flat-panel detector
What is the effect of increasing SID on magnification and spatial resolution?
✔✔Magnification decreases and spatial resolution improves
Which artifact is caused by patient movement during exposure?
✔✔Motion blur
Which factor primarily reduces scatter and improves image contrast?
✔✔Use of a grid
What is the primary purpose of using a grid in radiography?
3
, ✔✔To reduce scatter radiation reaching the image receptor and improve image contrast
Which factor directly affects radiographic density the most?
✔✔mAs
What type of radiation interaction is primarily responsible for producing contrast in soft tissue?
✔✔Photoelectric effect
How does increasing the SID affect image magnification?
✔✔It decreases magnification and improves spatial resolution
What is the primary function of the X-ray tube filament?
✔✔To produce electrons via thermionic emission
Which radiographic factor primarily controls the energy of X-ray photons?
✔✔kVp
What is the main purpose of using a compensating filter?
4
