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






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






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






4. Cortical bone - radiopaque band above maxillary incisors






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






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






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






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






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






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






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






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






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






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






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






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






18. Encases/supports teeth






19. Marked prominence that appears radiopaque.






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






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






22. Surrounds root - cortical bone - radiopaque






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






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






25. 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






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






27. Bump or nodule that appears radiopaque






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






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






30. Sharp - thornlike projection that appears radiopaque.






31. 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.






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






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






34. Continues from ramus; radiopaque band






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






36. 8 inch and 16 inch; longer are preferred due to less divergence of beam - open ended and lead lined.






37. Linear prominence that appears radiopaque.






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






39. Rounded prominence that appears radiopaque






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






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






42. Bony wall that divides 2 spaces - radiopaque






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






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






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






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






47. X-radiation created when the primary beam interacts with a matter






48. Effects seen years - decades - or generations later






49. 68 Degrees F






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