Unit 4

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Across
  1. 2. mammography projection that should only be done on the request of a radiologist
  2. 4. exposing a patient to ionizing radiation when no useful medical information is gained
  3. 6. upper boundary dose of ionizing radiation with a negligible risk
  4. 11. protects the radiographer at the gonadal level
  5. 12. needed to flatten the breast for imaging
  6. 13. alternative to using a grid
  7. 16. filter material used in mammography
  8. 19. one of the three cardinal rules of radiation protection
  9. 23. can increase a patient's dose by 25%
  10. 24. any wall that is never struck by primary radiation
  11. 26. protective barrier that is perpendicular to the x-ray beam
  12. 30. uses this type of kilovoltage in mammography
  13. 31. should be between the fluoroscopist and the patient to intercept scatter
  14. 32. technical factor that determines penetration
  15. 37. imaging uses annihilation radiation events
  16. 39. a result of poor positioning or technique selection
  17. 40. a fluoroscopic timer is used to minimize this
  18. 43. standard number of images taken in a screening mammogram
  19. 44. a type of patient motion
  20. 45. dose used to assess overall impact of gonadal dose on a population
  21. 47. oversees a radiation program's daily operation and formally reviews it each year
  22. 50. 50 mSv for whole body exposure during radiographic procedures
  23. 52. synonymous with automatic collimation
  24. 53. should be used to shield a pregnant patient
Down
  1. 1. the thickness required to decrease the intensity of the primary beam by 50%
  2. 3. dose of an individual's age in years times 10 mSv
  3. 5. most common radioisotope in nuclear medicine
  4. 7. minimum number of times x-rays should scatter before reaching the secondary barrier
  5. 8. required component of a fluoroscopic unit to measure beam-on time
  6. 9. skin dose that is used for assessing the amount of radiation received by a paitient
  7. 10. a material use for compensating filters
  8. 14. type of fluoroscopy that is not continuous
  9. 15. best practice is removal of contaminated clothing
  10. 17. synonymous with phototiming
  11. 18. automatic exposure control for CT
  12. 20. reviews regulations formulated by the ICRP and decides ways to include those recommendations in US radiation protection criteria
  13. 21. when using, the radiographer must stand at least 6 feet away from the patient
  14. 22. located above the patient in fluoroscopy and surgery x-ray machines
  15. 25. not typically used in CT due to collimators
  16. 27. creates cross-sectional images of the body
  17. 28. 5mSv annual dose limit population
  18. 29. method of limiting internal contamination
  19. 33. glass envelope encasing the x-ray tube
  20. 34. uses epidemiology data to research conclusions to derrive radiation risk for malignancies and hereditary effects
  21. 35. concept where continuous exposure to small amounts of radiation is beneficial
  22. 36. oversees the nuclear energy industry, enforces radiation protection standards,
  23. 38. protective device that can be worn to protect the lens of the eye
  24. 41. protective device that should use a 0.5mm lead equivalency
  25. 42. level of backscatter on the x-ray tube side
  26. 46. radiopharmaceutical used in prostate treatment
  27. 48. isotope used in PET scanning
  28. 49. device that improves radiographic contrast and detail
  29. 51. synonymous with dose optimization