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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A form of secondary radiation - the result of x-rays that has been deflected from its path by an interaction with matter.






2. Linear prominence that appears radiopaque.






3. Located above maxillary premolar/molar teeth - border is made up of cortical bone; sinus cavity is radiolucent compartment






4. Dental x-ray machines operating 70 kVp or below: minimum 1.5 mm aluminum filtration - Dental x-ray machines operating above 70 kVp: minimum of 2.5 mm. of aluminum filtration.






5. Sharper of dark and light areas and how they are separated on film. Low kVp results in high contrast (many white and black areas - very little gray). Useful when diagnosing decay. High kVp results in low contrast (many shades of grade) Useful for per






6. The measurement of the number of electrons moving through a conductor. Measured in amperes (A) or milliamperes (mA)






7. Scooped out of depressed area of bone that appears radiolucent






8. Produced when a high-speed electron dislodges an inner-shell electron from a tungsten atom and causes ionization of that atom. Occurs only at 70 kVp and above.






9. Closed - pointed cone-high production of scatter - not used any longer.






10. Surrounded by genial tubercle - hole in bone near mandibular midline - radiolucent






11. Opening/hole in bone that allows the passage of blood vessels/nerves and appears radiolucent






12. Located at the midline of anterior portion of hard palate behind maxillary central incisors; round radiolucency between roots of centrals






13. More damage can occur in younger or rapidly dividing cells






14. Depression of bone; submandibular salivary gland found here; radiolucent; below mylohyoid ridge






15. 'Cheekbone'; cortical bone; radiopaque band extending from zygomatic process.






16. Between canine and lateral incisor - depression is not always visible - radiolucent






17. Posterior to mandibular third molar






18. 'hooklike' - posterior to maxillary tuberosity; extension of medial pterygoid plate of sphenoid bone; radiopaque






19. The penetrating x-ray beam that is produced at the target of the anode






20. Bony wall that divides 2 spaces - radiopaque






21. Mostly seen in mandibular nerve/blood supply vertical radiolucent lines






22. Superior to internal oblique ridge; anterior border of ramus ends in external oblique ridge; radiopaque band






23. Marked prominence that appears radiopaque.






24. Cortical bone - radiopaque band above maxillary incisors






25. V-shaped radiopacity at intersection of floor of nasal cavity and septum






26. Encases/supports teeth






27. Sharp - thornlike projection that appears radiopaque.






28. Somatic effects that have a threshold; effects increase in severity with increasing absorbed dose. (Examples: Erythema - loss of hair - cataracts - and decreased fertility)






29. A line of union between adjoining bones - found only in skull; appears as radiolucent line






30. Pear shaped compartment - appears above maxillary incisors. Appears as a large radiolucent area above the maxilla.






31. Time between exposure to ionizing radiation and the appearance of observable clinical signs.






32. U-shaped portion extending from ramus to ramus






33. Can control the current passing from the cathode to the anode.






34. Coronal part of alveolar bone - between teeth - cortical bone - radiopaque






35. Reduces exposed silver halide crystals into black metallic silver a makes dark/black areas on film; unexposed silver halide crystals are unaffected by developer






36. Bump of bone - muscle attachment; lingual aspect of mandible - 'ring shaped' radiopacitiy below mandibular incisors.






37. Gray






38. Within maxillary sinus; acts as a division - radiopaque lines sometimes not visible






39. 'Arranged like a lattice'->soft - spongy bone located between 2 layers of cortical bone; spaces are trabeculae that are filled with bone marrow.






40. An x-ray photon that has its path altered by matter.






41. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






42. Removes unexposed silver halide crystals and creates white/clear areas on film; black metallic silver remains on film.






43. Bony prominence posterior to maxillary third molar; radiopaque






44. Darkness or blackness on film. If kVp is increased film will be darker. If decreased - film will be lighter






45. Surrounds root - cortical bone - radiopaque






46. Suggest that no matter how small the amount of radiation received - some biologic damage occurs.






47. Used to increase incoming voltage to 65 -000 to 100 -000 volts used by the high-voltage circuit.






48. Space between root and the lamina dura - thin - radiolucent line - healthy PDL is uniform thickness






49. Tube that passes through bone - contains nerve canals/blood vessels/and appears radiolucent






50. Cortical bone; J or U shaped radiopacity