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






2. 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)






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






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






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






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






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






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






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






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






11. Posterior to mandibular third molar






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






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






14. Linear prominence that appears radiopaque.






15. Mature bone - muscle - nerve






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






17. 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.






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






19. Occurs very little; most photons pass through cell with little or no damage






20. Cortical bone; J or U shaped radiopacity






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






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






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






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






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






26. Effects seen years - decades - or generations later






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






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






29. Bony wall that divides 2 spaces - radiopaque






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






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






32. Do not occur in dentistry






33. 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.






34. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






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






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






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






42. Rounded prominence that appears radiopaque






43. Sharp - thornlike projection that appears radiopaque.






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






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






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






47. Hollow space - cavity that appears radiolucent






48. Marked prominence that appears radiopaque.






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






50. Surrounds root - cortical bone - radiopaque