Test your basic knowledge |

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. Continues from ramus; radiopaque band






2. Sharp - thornlike projection that appears radiopaque.






3. Can increase or decrease the number of electrons passing through the cathode filament






4. Cortical bone - radiopaque band above maxillary incisors






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






6. Internal ridge of mandible muscle attachment - continuous with internal oblique ridge; radiopaque line






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






8. Surrounds root - cortical bone - radiopaque






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






10. 68 Degrees F






11. Rate which exposure to radiation occurs and absorption occurs (more damage occurs with high dose due to rapid delivery and does not allow for repair)






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






13. Thin - curved areas of bone - radiopacities within nasal cavity and septum






14. Small lymphocyte - bone marrow - reproductive cells - immature bone






15. Restricts size and shape of beam to lower patient exposure - Round: cone shaped beam-2.75 inches in diameter - Rectangular: Rectangular beam slightly larger than size 2 film- lowers patient exposure






16. Tubes within maxillary sinus that carry nerves - blood supply - radiolucent band with boundary of two radiopaque cortical bony lines






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






18. 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.






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






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






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






22. Bump or nodule that appears radiopaque






23. Sievart






24. Used to decrease voltage from the incoming 110- or 220-line voltage to the 3 to 5 volts used by the filament circuit.






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






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






27. 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.






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






29. A direct function of the dose. No dose threshold; effects do not depend on the magnitude of the absorbed dose (Examples: cancer and genetic mutations)






30. X-radiation created when the primary beam interacts with a matter






31. Mature bone - muscle - nerve






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






33. Do not occur in dentistry






34. The x-ray photon is deflected from its path during its passage through matter






35. Produced when an electron hits the nucleus of a tungsten atom or passes very close to the nucleus of a tungsten atom.






36. Rounded prominence that appears radiopaque






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






38. Hole in bone below mandibular premolars - blood supply to lower lip exits here; radiolucent; often misdiagnosed for periapical pathology






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






40. Posterior to mandibular third molar






41. 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






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






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






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






45. A form of secondary radiation - the result of x-rays that has been deflected from its path by an interaction with matter.






46. The measurement of electrical force that causes electrons to move from a negative pole to a positive one. Measured in volts (V) or kilovolts (kV)






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






48. Coulombs per kilogram






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






50. Bony wall that divides 2 spaces - radiopaque