FULLY SOLVED QUESTION SET
◉ What is the IR that is used for computed radiography?
A.) Direct-conversion flat panel detector
B.) Indirect-conversion flat panel detector
C.) Rare earth intensifying screen
D.) Photostimulable Phosphor (PSP) plate
Answer: Photostimulable Phosphor (PSP) plate
◉ Nearly all new x-ray machines manufactured today use
_________________ generators
A.) single-phase
B.) Three-phase, six-pulse
C.) Three-phase, 12-pulse
D.) High-frequency
Answer: High-frequency
◉ The target of the x-ray tube is made of:
A.) tungsten
B.) glass
,C.) Stainless steel
D.) Fluorescent phospors
Answer: tungsten
◉ What is the standard control limit for the field light to radiation
field alignment test?
A.) exact alignment
B.) +/- 1% of SID
C.) +/- 2% of SID
D.) +/- 5% of SID
Answer: +/- 2% of SID
◉ What is the standard control limit for the beam (Central ray)
alignment test?
A.) exact alignment
B.) within 1 degree of perpendicular
C.) within 2 degrees of perpendicular
D.) within 5 degrees of perpendicular
Answer: within 1 degree of perpendicular
◉ How often should lead aprons and gloves be checked for cracks or
holes?
,A.) every 3 months
B.) every 6 months
C.) every 9 months
D.) every 12 months
Answer: every 6 months
◉ How can detector fog be prevented when using computed
radiography cassettes
A.) Use the maximum SID
B.) Apply close collimation
C.) Protect the cassette before and after exposure
D.) Select the optimum kVp
Answer: Protect the cassette before and after exposure
◉ Which of the following will result in increase receptor exposure?
1. Increase mA
2. Increase exposure time
3. Increase kVp
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
, D.) 1, 2 , and 3
Answer: 1, 2 , and 3
◉ If the radiographic image is overexposed, which of the following
changes in exposure factors should be used to correct the problem?
A.) Decrease kVp
B.) Increase kVp
C.) Increase mAs
D.) Decrease the mAs
Answer: Increase kVp
◉ The relationship between SID and beam intensity is expressed in
the:
A.) Proportional square law
B.) Inverse Square law
C.) Reciprocity law
D.) Target-Distance law
Answer: Inverse Square law
◉ What are the four primary factors of radiographic quality?
A.) mA, seconds, kVp, and SID
B.) SID, density, Contrast, and mAs