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






2. Sievart






3. Cortical bone; J or U shaped radiopacity






4. Mature bone - muscle - nerve






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






6. 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)






7. U-shaped portion extending from ramus to ramus






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






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






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






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






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






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






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






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






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






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






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






19. Linear prominence that appears radiopaque.






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






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






22. Gray






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






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






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






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






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






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






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






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






31. Bony prominence posterior to maxillary third molar; radiopaque






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






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






34. 16-20 square feet (at least 4x4) - Light tight - Safelight must be at least 4 feet from the working area






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






36. 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






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






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






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






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






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






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






43. Sharp - thornlike projection that appears radiopaque.






44. Surrounds root - cortical bone - radiopaque






45. 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)






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






47. Continues from ramus; radiopaque band






48. Marked prominence that appears radiopaque.






49. Rounded prominence that appears radiopaque






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