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






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






3. 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)






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






5. U-shaped portion extending from ramus to ramus






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






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






8. Rounded prominence that appears radiopaque






9. 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






10. Cortical bone - radiopaque band above maxillary incisors






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






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






13. Posterior to mandibular third molar






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






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






16. Bump or nodule that appears radiopaque






17. Continues from ramus; radiopaque band






18. Occurs frequently due to the high concentration of water in cells.






19. 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.






20. 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)






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






22. Sharp - thornlike projection that appears radiopaque.






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






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






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






26. Linear prominence that appears radiopaque.






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






28. Coulombs per kilogram






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






30. Surrounds root - cortical bone - radiopaque






31. Sievart






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






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






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






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






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






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






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






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






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






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






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






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






44. Bony prominence posterior to maxillary third molar; radiopaque






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






46. Effects seen years - decades - or generations later






47. 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.






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






49. 68 Degrees F






50. Do not occur in dentistry