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






2. Gray






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






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






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






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






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






8. Sievart






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






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






11. 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)






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






13. Cortical bone; J or U shaped radiopacity






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






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






16. 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






17. Hollow space - cavity that appears radiolucent






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






19. Effects seen years - decades - or generations later






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






21. Rounded prominence that appears radiopaque






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






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






24. Mature bone - muscle - nerve






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






26. Marked prominence that appears radiopaque.






27. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






29. Surrounds root - cortical bone - radiopaque






30. Bony wall that divides 2 spaces - radiopaque






31. Continues from ramus; radiopaque band






32. Coulombs per kilogram






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






34. Bony prominence posterior to maxillary third molar; radiopaque






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






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






37. 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.






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






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






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






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






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






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






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






45. Do not occur in dentistry






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






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






48. 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)






49. Linear prominence that appears radiopaque.






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