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






2. Primary beam passes through glass window - insulating oil - tubehead seal. 0.5 to 1.0 mm of aluminum






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






4. Bony prominence posterior to maxillary third molar; radiopaque






5. Effects seen years - decades - or generations later






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






7. Cell damage occurs through formation of 'free radicals'. Free radicals are formed when an x-ray photon ionizes water.






8. Encases/supports teeth






9. Rounded prominence that appears radiopaque






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






11. Reproductive (ova - sperm). Effects are passed on to generations. Genetic damage cannot be repaired






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






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






14. Continues from ramus; radiopaque band






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






16. Extends from alveolar bone between maxillary centrals to posterior hard palate; seen as a radiolucent line






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






18. Two small openings (radiolucent) found on floor of nasal cavity->common exit is incisive foramen






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






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






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






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






23. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






24. Aluminum disks between collimator and tubehead seal. Aluminum disks filter long wavelength - low energy x-rays from x-ray beam. 0.5 mm increments






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






26. 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






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






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






29. Bony wall that divides 2 spaces - radiopaque






30. Anterior ramus of mandible; attachment for muscle of mastication; superimposed around maxillary tuberosity.






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






32. 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)






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






34. 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






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






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






37. Quantity of radiation received or total amount absorbed (more damage with tissue absorbing large quantities of radiation)






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






39. Surrounds root - cortical bone - radiopaque






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






41. All cells except reproductive; effects are seen in person irradiated






42. Linear prominence that appears radiopaque.






43. Cortical bone - radiopaque band above maxillary incisors






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






45. Tube that travels length of mandible - radiolucent; has cortical walls - houses inferior alveolar nerve






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






47. 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)






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






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






50. Area of body exposed total body produced more adverse effects