1. Artifact analysis

2. Artifact analysis
One of the causes of rejected images listed in the repeat analysis worksheet is the presence of image artifacts.
An artifact can contribute significantly to the total repeat rate; therefore a thorough knowledge of artifacts and their possible causes is necessary so that corrective action can be taken.

3. What Is An Artifact? Any optical density that is not anatomy
An unwanted density on the radiograph
Interferes with diagnosis

4. There Are Three Time Periods In Which Artifacts Can Occur
During exposure
During processing
During film handling, prior to processing, loading cassette, or storing

5. Exposure Artifacts
They are caused by the patient, the technologist, or the equipment during a diagnostic procedure
Poor screen-film contact
Improper use/positioning of a grid
Double exposure
Patient motion
Poor patient preparation
Clothing, jewelery, glasses, belts, etc.

6. Processing Artifacts
They are caused by or occur during the processing of diagnostic images
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

7. 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

8. Hypo Retention Yellowish stain that appears on finished radiograph
Due to inadequate washing
Remaining thiosulfate from fixer solution

9. Handling And Storage Artifacts
They occur during darkroom handling or during storage before use.
Light or Radiation Fog
White light streaks
Safelight too close or wrong wattage
Film left in x-ray room during exposure

10. Kink Marks
Improper handling or storage
Appears as a fingernail mark

11. Static Caused by buildup of electrons in the emulsion
Three types of static artifacts
Crown
Tree
Smudge

12. Processing Artifacts

13. FILMS STUCK TO EACH OTHER DURING PROCESSING

14. HYPORETENTION

15. ROLLER MARKS

16. PI-LINE

17. GUIDE SHOE MARK

18. WATER STAIN

19. Handling Artifacts

20. STATIC (Tree Static)

21. STATIC (Crown Static)

22. STATIC (Smudge Static

23. FINGER MARKS

24. CRIMPING MARK

25. CRIMPING MARK

26. PICK-OFF

27. WATER STAIN

28. WATER STAIN

29. Exposure Artifacts

30. MOTION

31. POOR FILM SCREN CONTACT

32. ARTIFACT????

33. H.T. (high Voltage) CABLES

34. ROTATION + FOG

35. DOUBLE EXPOSURE

36. BACKSCATTER OR CASSETTE UPSIDE-DOWN

37. BACKSCATTER

38. BACKSCATTER OR CASSETTE UPSIDE-DOWN

39. MOIRE EFFECT Are artifacts also called zebra pattern Artifact
It is a double set of grid lines caused by the placement of a grid cassette in a Bucky tray.

40. WARPED CASSETTE-LIGHT LEAK

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. KYPHOSIS-CHIN

58. STRAP

59. SCRATCHES

60. STATIC

61. In CT Scan Artifacts

62. Intra Uterine Device

63. Chole clips

64. Earring Artifact

65. MRI artifacts

66. Patient Movements