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






2. Sievart






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






4. 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.






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






6. Sharp - thornlike projection that appears radiopaque.






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






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






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






10. Continues from ramus; radiopaque band






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






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






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






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






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






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






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






18. Effects seen years - decades - or generations later






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






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






21. U-shaped portion extending from ramus to ramus






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






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






24. Encases/supports teeth






25. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






26. Coulombs per kilogram






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






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






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






30. Marked prominence that appears radiopaque.






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






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






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






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






35. Hollow space - cavity that appears radiolucent






36. 68 Degrees F






37. Cortical bone; J or U shaped radiopacity






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






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






40. 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






41. Bump or nodule that appears radiopaque






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






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






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






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






46. 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.






47. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






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






50. 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