IPE

Question 1

1. Changing the OFD from 2” to 4” would result in:

A. Reduced magnification
B. Greater magnification
C. Higher recorded detail
D. Lower contrast

Answer 1

B. Greater magnification

Question 2

2. Which of the following technical factors would produce a radiograph with the shortest scale of contrast?
   A. 50 mA, 1 s, 72 kVp
   B. 100 mA, 1/2 s, 75 kVp
   C. 150 mA, 1/5 s, 79 kVp
   D. 200 mA, 1/8 s, 78 kVp

Answer 2

A. 50 mA, 1 s, 72 kVp

Question 3

3. Which of the following physical interaction between radiation and matter most asssists in providing radiographic contrast?
   A. Photoelectric
   B. Compton
   C. Pair production
   D. Photodisentegration

Answer 3

A. Photoelectric

Question 4

4. Which of the following best illustrates magnification factor?
   A. MF=FOD/FFD
   B. MF=FFD/FOD
   C. MF=OFD/FOD
   D. MF=OFD/FFD

Answer 4

B. MF=FFD/FOD

Question 5

7. Which of the four primary exposure factors is primarily controlled by mAs?
   A. Density
   B. Contrast
   C. Recorded detail
   D. Distortion

Answer 5

A. Density

Question 5

5. Which of the following technical factors would produce the greatest density on radiographic film if all other factors were to remain identical:
   A. 300 mA, 1/4 s, 74 kVp, 40” SID, 12:1 grid, 100 filmspeed
   B. 200 mA, 3/8 s, 76 kVp, 40” SID, 12:1 grid, 100 filmspeed
   C. 150 mA, 1/2 s, 74 kVp, 40” SID, 8:1 grid, 100 filmspeed
   D. 100 mA, 3/4 s, 76 kVp, 40” SID, 6:1 grid, 100 filmspeed

Answer 5

D. 100 mA, 3/4 s, 76 kVp, 40” SID, 6:1 grid, 100 filmspeed

Question 6

6. What will be seen if the mA is decreased for an automatic exposure device?
   A. Time will decrease
   B. Time will increase
   C. Density will increase
   D. Density will decrease

Answer 6

B. Time will increase

Question 7

10. Which of the following will produce a change in contrast without changing density?
    A. Increase kVp and decrease mAs
    B. Increase kVp and increase mAs
    C. Decrease mAs and no change in kVp
    D. Decrease kVp and no change in mAs

Answer 7

A. Increase kVp and decrease mAs

Question 8

8. Which of the four primary exposure factors is most affected by a change in focal spot size?
   A. Density
   B. Contrast
   C. Recorded detail
   D. Distortion

Answer 8

C. Recorded detail

Question 9

9. Which of the following will increase as a result of using a compression band on the abdomen of a large patient?
10. Subject density
11. Subject contrast
12. Radiographic density
    A. 1 and 2 only
    B. 1 and 3 only
    C. 2 and 3 only
    D. 1, 2, and 3 only

Answer 9

C. 2 and 3 only

Question 10

11. Which of the following will produce visible changes in radiographic density?
12. kVp
13. Primary beam field size
14. Grid ratio
    A. 1 and 2 only
    B. 1 and 3 only
    C. 2 and 3 only
    D. 1, 2, and 3

Answer 10

D. 1, 2, and 3

Question 11

12. Which of the following will cause loss of recorded detail?
    A. kVp changes
    B. mAs changes
    C. Subject motion
    D. Subject density changes

Answer 11

C. Subject motion