Artifact
- 2. What Is An Artifact? Any optical density that is not anatomy An unwanted density on the radiograph Interferes with diagnosis
- 3. There Are Three Time Periods In Which Artifacts Can Occur 1 1 3+ = During exposure During processing During film handling, prior to processing, loading cassette, or storing
- 4. Exposure Artifacts Poor screen-film contact Improper use/positioning of a grid Double exposure Patient motion Poor patient preparation – Clothing, jewelery, glasses, belts, etc.
- 5. Processing Artifacts Dirty Rollers – Will leave deposits on film – Areas of increased or reduced density – Occasionally some sludge may not be washed off and dried onto the film Chemical Fog – Improper or inadequate chemistry – Leaves a uniform dull gray haze on the film – May also be seen in two different colors • Referred to as dichroic stain
- 6. Guide Shoe and Roller Marks Guide shoes are sprung or improperly positioned – The ridges in the guide shoe press against the film leaving an artifact Pi-lines – Dirt or stain on a roller – 3.14 inches apart Pressure marks – Irregular or dirty rollers • Small, circular patterns are produced
- 7. Handling And Storage Artifacts Light or Radiation Fog – White light streaks – Safelight too close or wrong wattage – Film left in x-ray room during exposure
- 8. Kink Marks Improper handling or storage Appears as a fingernail mark
- 9. Static Caused by buildup of electrons in the emulsion Three types of static artifacts – Crown – Tree – Smudge
- 10. Hypo Retention Yellowish stain that appears on finished radiograph Due to inadequate washing Remaining thiosulfate from fixer solution
- 11. FILMS STUCK TO EACH OTHER DURING PROCESSING
- 12. HYPORETENTION
- 13. PI-LINE
- 14. GUIDE SHOE MARK
- 15. STATIC
- 16. STATIC
- 17. STATIC
- 18. ROLLER MARKS
- 19. FINGER MARKS
- 20. CRIMPING MARK
- 21. CRIMPING MARK
- 22. PICK-OFF
- 23. WATER STAIN
- 24. WATER STAIN
- 25. WATER STAIN
- 26. MOTION
- 28. ARTIFACT????
- 29. H.T. (high Voltage) CABLES
- 30. ROTATION + FOG
- 31. ANTOMY OF INTEREST NOT SHOWN
- 32. DOUBLE EXPOSURE
- 34. BACKSCATTER
- 36. MOIRE EFFECT
- 38. TWO FILMS IN THE CASSETTE UNDEREXPOSURE
- 39. POWDER
- 40. DEODORANT
- 41. HAIR BUN
- 42. CLOTHES RIBBING
- 43. TUBE
- 44. HAIR STREAKING
- 45. GRID CUT-OFF
- 46. JEWELLERY
- 47. HEARING AID
- 48. LIGHTER IN THE POCKET
- 49. SCATTER FOG
- 50. SANDBAG
- 51. UMBILICAL RING
- 52. AIR IN THE VENTRICLES AIRHEAD?????
- 53. PLASTER
- 54. DIRT ON THE SCREEN
- 55. PATHOLOGY
- 56. FOGGING
- 57. GRID CUT-OFF
- 58. KYPHOSIS-CHIN
- 59. STRAP
- 60. SCRATCHES
- 61. STATIC
- 62. In CT Scan Artifacts
- 64. Chole clips
- 65. Earring Artifact
- 66. MRI artifacts