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Radiology 3

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Thin - curved areas of bone - radiopacities within nasal cavity and septum






2. Coulombs per kilogram






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






4. Posterior to mandibular third molar






5. 68 Degrees F






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






7. Cortical bone - radiopaque band above maxillary incisors






8. Sharp - thornlike projection that appears radiopaque.






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






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






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






12. Bony wall that divides 2 spaces - radiopaque






13. 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)






14. Hollow space - cavity that appears radiolucent






15. 'Cortex'-> dense - outer layer; also called compact bone-appears radiopaque on film






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






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






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






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






20. Bony prominence posterior to maxillary third molar; radiopaque






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






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






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






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






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






26. Effects seen years - decades - or generations later






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






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






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






30. Continues from ramus; radiopaque band






31. 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.






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






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






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






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






37. 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






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






39. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






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






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






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






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






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






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






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






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







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