RAD 105 EXAM NEWEST 2025 ACTUAL EXAM

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RAD 105 EXAM NEWEST 2025 ACTUAL EXAM

COMPLETE 300 QUESTIONS AND CORRECT

DETAILED ANSWERS (VERIFIED ANSWERS)

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Question 1: What "across-the-board" adjustment in radiographic

techniques is recommended to allow for CR operation at the 400-speed class, reduce patient exposure, and avoid image mottle?

• double all mAs values
• cut all mAs values in half
• increase all kVp levels by 15 per cent
• reduce all kVp levels by 15 per cent

Correct answer: increase all kVp levels by 15 per cent

Question 2: If a department chooses to operate their CR or DR

system at the 200-speed class, what general adjustment in techniques must be made in changing from 400-speed rare earth

screens:

• an overall doubling
• a four-fold increase overall

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• a reduction to one-half
• no change is required

Correct answer: an overall doubling

Question 3: For all digital imaging systems, a lower limit for

exposure to the receptor is imposed by:

• the appearance of mottle
• images turning out too light
• the appearance of image fog
• images turning out with excessive contrast

Correct answer: the appearance of mottle

Question 4: Which of the following are essential considerations

when using automatic exposure control with a DR or CR system?

• the use of high kVp techniques
• exact centering of the anatomy
• correct selection of activated detectors
• all of the above

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Correct answer: all of the above

Question 5: mottle in a CR or DR image can result from:

• insufficient kVp
• insufficient mAs
• improperly calibrated AEC
• all of the above
• b and c only

Correct answer: all of the above

Question 6: Which of the following artifacts is related to the

Nyquist frequency?

• grid lines
• aliasing artifact
• heat blur
• mottle

Correct answer: aliasing artifact

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Question 7: For digital imaging, if a grid is not used:

• the fog caused by scatter radiation will be transmitted through

to the final image

• the final digital image will always turn out dark
• the final digital image will always turn out light
• the reduced signal-to-noise ratio from poor input data can

contribute to digital processing errors

Correct answer: the final digital image will always turn out dark

Question 8: Just as in conventional radiography, it is essential in

digital radiography that the original must have a high signal-to-

noise ratio:

• laser beam
• light emission from the phosphor plate
• primary x-ray beam
• remnant x-ray beam

Correct answer: remnant x-ray beam