DASLE RADIOLOGY EXAM
QUESTIONS AND ANSWERS
1. Define ionization:Occurs when x-rays interact with matter. - Answer-The primary way x-
rays damage biological tissue.
2. Describe the way in which x-rays damage biological tissue. - Answer-Ionization
3. List the ways to reduce radiation exposure to...
10. List the three types of radiation.-primary - secondary or scatter - - Answer✔✔-stray
11. Which type of radiation is the most hazardous to the operator? - Answer✔✔-secondary
12. If you use too much VA, how will the radiographs appear? - Answer✔✔-Foreshortened
13. Which technique causes the zygomatic to be superimposed on the roots of the maxillary
molar? Why? - Answer✔✔-Bisecting. Because that technique uses a greater VA.
14. Define overlapping. - Answer✔✔-Superimposition of proximal surfaces on adjacent teeth
15. What causes foreshortening? - Answer✔✔-Too much VA
16. What causes elongation? - Answer✔✔-Too little VA
17. If the film is curved or overcontoured, how will the radiograph appear? - Answer✔✔-Image
distortion
18. What causes white chalky spots on the film? - Answer✔✔-Insufficient rinsing
19. What causes conecutting? - Answer✔✔-Incorrect central ray entry - not at center of the film
packet
20. If a film is overexposed, how will it appear? - Answer✔✔-Too dark
21. If a film was developed but never exposed, how will it appear? - Answer✔✔-Light bluish
green and clear
22. How would weak processing solutions cause a film to appear? - Answer✔✔-Too light
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