Minnesota Radiology Assistant
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. Which imaging modality is most commonly used as the initial
diagnostic test for suspected pulmonary embolism in stable patients?
A. Ultrasound
B. MRI
C. CT pulmonary angiography
D. Nuclear bone scan
CT pulmonary angiography is the preferred initial imaging study for
suspected pulmonary embolism because it provides rapid, highly detailed
visualization of pulmonary vasculature and thrombi.
2. Which contrast agent adverse reaction is considered life-threatening?
,A. Mild nausea
B. Sneezing
C. Localized urticaria
D. Anaphylaxis
Anaphylaxis is a severe hypersensitivity reaction involving airway
compromise, hypotension, and cardiovascular collapse requiring
immediate emergency intervention.
3. The primary purpose of collimation during radiographic imaging is to:
A. Increase scatter radiation
B. Reduce image brightness
C. Limit patient radiation exposure and improve image quality
D. Increase exposure time
Collimation restricts the x-ray beam to the area of interest, reducing
unnecessary radiation exposure and minimizing scatter radiation to
improve image contrast.
4. Which structure is best visualized using a lateral cervical spine
radiograph?
A. Patella
B. Femoral head
,C. Cervical vertebral alignment
D. Iliac crest
A lateral cervical spine image demonstrates vertebral body alignment, disc
spaces, and potential fractures or dislocations in the cervical region.
5. What is the recommended action if a patient experiences
extravasation of IV contrast?
A. Continue injection
B. Massage the area vigorously
C. Apply heat immediately
D. Stop the injection and assess the site
Stopping the injection prevents further tissue injury, and the affected area
should be evaluated promptly for swelling, pain, or compromised
circulation.
6. Which imaging modality uses high-frequency sound waves?
A. CT
B. Fluoroscopy
C. Ultrasound
D. PET
Ultrasound produces images using reflected high-frequency sound waves
without ionizing radiation exposure.
, 7. What is the primary function of a grid in radiography?
A. Increase beam divergence
B. Reduce exposure time
C. Reduce scatter radiation reaching the image receptor
D. Increase patient movement
Grids improve image contrast by absorbing scattered radiation before it
reaches the detector.
8. Which patient position is commonly used for a chest radiograph?
A. Trendelenburg
B. Lithotomy
C. Posteroanterior upright
D. Sims
The upright PA chest position minimizes heart magnification and provides
optimal lung visualization.
9. Which radiation protection principle involves minimizing exposure
duration?
A. Shielding
B. Filtration
C. Time
D. Positioning
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which imaging modality is most commonly used as the initial
diagnostic test for suspected pulmonary embolism in stable patients?
A. Ultrasound
B. MRI
C. CT pulmonary angiography
D. Nuclear bone scan
CT pulmonary angiography is the preferred initial imaging study for
suspected pulmonary embolism because it provides rapid, highly detailed
visualization of pulmonary vasculature and thrombi.
2. Which contrast agent adverse reaction is considered life-threatening?
,A. Mild nausea
B. Sneezing
C. Localized urticaria
D. Anaphylaxis
Anaphylaxis is a severe hypersensitivity reaction involving airway
compromise, hypotension, and cardiovascular collapse requiring
immediate emergency intervention.
3. The primary purpose of collimation during radiographic imaging is to:
A. Increase scatter radiation
B. Reduce image brightness
C. Limit patient radiation exposure and improve image quality
D. Increase exposure time
Collimation restricts the x-ray beam to the area of interest, reducing
unnecessary radiation exposure and minimizing scatter radiation to
improve image contrast.
4. Which structure is best visualized using a lateral cervical spine
radiograph?
A. Patella
B. Femoral head
,C. Cervical vertebral alignment
D. Iliac crest
A lateral cervical spine image demonstrates vertebral body alignment, disc
spaces, and potential fractures or dislocations in the cervical region.
5. What is the recommended action if a patient experiences
extravasation of IV contrast?
A. Continue injection
B. Massage the area vigorously
C. Apply heat immediately
D. Stop the injection and assess the site
Stopping the injection prevents further tissue injury, and the affected area
should be evaluated promptly for swelling, pain, or compromised
circulation.
6. Which imaging modality uses high-frequency sound waves?
A. CT
B. Fluoroscopy
C. Ultrasound
D. PET
Ultrasound produces images using reflected high-frequency sound waves
without ionizing radiation exposure.
, 7. What is the primary function of a grid in radiography?
A. Increase beam divergence
B. Reduce exposure time
C. Reduce scatter radiation reaching the image receptor
D. Increase patient movement
Grids improve image contrast by absorbing scattered radiation before it
reaches the detector.
8. Which patient position is commonly used for a chest radiograph?
A. Trendelenburg
B. Lithotomy
C. Posteroanterior upright
D. Sims
The upright PA chest position minimizes heart magnification and provides
optimal lung visualization.
9. Which radiation protection principle involves minimizing exposure
duration?
A. Shielding
B. Filtration
C. Time
D. Positioning
