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






2. Hollow space - cavity that appears radiolucent






3. Coulombs per kilogram






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






5. 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.






6. Encases/supports teeth






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






8. Bump or nodule that appears radiopaque






9. 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)






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






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






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






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






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






15. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






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






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






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






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






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






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






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






23. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






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






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






30. Linear prominence that appears radiopaque.






31. Marked prominence that appears radiopaque.






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






33. Continues from ramus; radiopaque band






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






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






36. Cortical bone; J or U shaped radiopacity






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






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






39. 68 Degrees F






40. Gray






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






42. Effects seen years - decades - or generations later






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






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






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






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






47. 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






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






49. U-shaped portion extending from ramus to ramus






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