More Related Content
Artifact
- 1.
- 2. What Is AnArtifact? Any optical density that is not anatomy An unwanted density on the radiograph Interferes with diagnosis
- 3. There Are ThreeTime 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-filmcontact 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 andRoller 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 StorageArtifacts 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 handlingor storage Appears as a fingernail mark
- 9. Static Caused by buildupof electrons in the emulsion Three types of static artifacts – Crown – Tree – Smudge
- 10. Hypo Retention Yellowish stainthat appears on finished radiograph Due to inadequate washing Remaining thiosulfate from fixer solution
- 11. FILMS STUCK TOEACH OTHER DURING PROCESSING
- 12.
- 13.
- 14.
- 15.
- 16.
- 17.
- 18.
- 19.
- 20.
- 21.
- 22.
- 23.
- 24.
- 25.
- 26.
- 27.
- 28.
- 29. H.T. (high Voltage)CABLES
- 30.
- 31. ANTOMY OF INTERESTNOT SHOWN
- 32.
- 33.
- 34.
- 35.
- 36.
- 37.
- 38. TWO FILMS INTHE CASSETTE UNDEREXPOSURE
- 39.
- 40.
- 41.
- 42.
- 43.
- 44.
- 45.
- 46.
- 47.
- 48. LIGHTER IN THEPOCKET
- 49.
- 50.
- 51.
- 52. AIR IN THEVENTRICLES AIRHEAD?????
- 53.
- 54. DIRT ON THESCREEN
- 55.
- 56.
- 57.
- 58.
- 59.
- 60.
- 61.
- 62. In CT ScanArtifacts
- 63.
- 64.
- 65.
- 66.
- 67.