Radiography Exam Radiography 5

Question 1

Which type of grid is most effective at removing off-angle scatter?

Accepted Answer

Crossed grid

Answer

Parallel grid

Answer

Focused grid

Answer

Moving grid

Question 2

Which projection of the lumbar spine best demonstrates the zygapophyseal (facet) joints on the side CLOSEST to the image receptor?

Accepted Answer

Oblique projection toward the IR side

Answer

AP projection

Answer

Lateral projection

Answer

Oblique projection away from the IR

Question 3

A radiographer notices that a patient's blood pressure is 90/60 mmHg and the patient is diaphoretic. What is the BEST initial action?

Accepted Answer

Notify the radiologist or supervising physician immediately

Answer

Continue the exam and note findings

Answer

Administer contrast media as scheduled

Answer

Recheck BP in 10 minutes

Question 4

Which anatomical landmark is used to center the CR for a PA projection of the hand?

Accepted Answer

Third MCP joint

Answer

Distal radius

Answer

Fifth PIP joint

Answer

Navicular bone

Question 5

Which type of contrast agent is used to evaluate the large intestine for suspected polyps?

Accepted Answer

Barium sulfate double-contrast enema

Answer

Iodinated contrast only

Answer

Air only

Answer

Gadolinium-based contrast

Question 6

What is the maximum permissible occupational dose (MPD) to the whole body per year according to NCRP guidelines?

Accepted Answer

50 mSv (5,000 mrem)

Answer

1 mSv (100 mrem)

Answer

5 mSv (500 mrem)

Answer

150 mSv (15,000 mrem)

Question 7

Which artifact in digital radiography appears as a grid-like pattern across the image due to anti-scatter grid frequency matching the detector?

Accepted Answer

Moiré artifact

Answer

Quantum mottle

Answer

Ghosting artifact

Answer

Dead pixel artifact