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. 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)






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






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






4. Sharp - thornlike projection that appears radiopaque.






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






6. 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)






7. Linear prominence that appears radiopaque.






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






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






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






11. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






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






17. Sievart






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






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






20. Intersection of maxillary sinus and nasal cavity - radiopaque - cortical bone; above maxillary canine.






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






22. Mature bone - muscle - nerve






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






24. Bony wall that divides 2 spaces - radiopaque






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






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






27. Posterior to mandibular third molar






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






29. Gray






30. 68 Degrees F






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






32. Cortical bone; J or U shaped radiopacity






33. Bony prominence posterior to maxillary third molar; radiopaque






34. Coulombs per kilogram






35. Encases/supports teeth






36. 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






37. Marked prominence that appears radiopaque.






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






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






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






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






43. 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.






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






45. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






47. Surrounds root - cortical bone - radiopaque






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






49. 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.






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