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Faulty radiograph
Good quality radiographs should have optimum density and contrast, minimal distortion, and sharp borders and details. Faulty radiographs can result from errors in processing, exposure factors, or film defects. The most common causes of faulty radiographs are light or dark images, insufficient contrast, film fog, dark or light spots, yellow or brown stains, blurring, partial images, dimensional changes, and scratches.
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Faulty radiograph
- 1. Good quality radiographsshould have: 1.Image with optimum density & contrast 2.Image with minimum distortion 3.Image with sharp borders & maximum details. Causes of Faulty radiograph: The majority of the errors may be as follows- I. Light Radiograph VII. Yellow or Brown Stains II. Dark Radiograph VIII. Blurring III. Insufficient Contrast IX. Partial Images IV. Film Fog X. Emulsion Peel V. Dark spots or Lines XI. Dimensional Change VI. Light Spots XII. Scratch film LIGHT RADIOGRAPH Processing Errors *Underdevelopment *Depleted Developer Sol *Diluted Contaminated Developer *Excessive Fixation Under Exposer *Insufficient mA *Insufficient kVp *Insufficient time *Film source distance too great *Reversed film in mouth DARK RADIOGRAPH Processing Errors *Overdevelopment *Developer concentration too high *Accidental exposure to light *Improper safe light Under Exposer *Excessive mA *Excessive kVp *Excessive time *Film source distance too Short INSUFFICIENT CONTRAST *Underdevelopment *Underexposure *Excessive kVp *Excessive film fog FAULTY RADIOGRAPHS FILM FOG *Improper safelighting *Light leaks *Overdevelopment *Contaminated solutions *Deteriorated film DARK SPOTS OR LINES *Finger print *Protective paper sticking to film *Excessive bending of film *Excessive roller pressure LIGHT SPOTS *Film contaminated to fixer before processing *Film contact with tank during developing the film *Excessive bending YELLOW OR BROWN STAINS *Depleted developer *Depleted fixer *Insufficient washing *Contaminated solution BLURRING *Improper safelighting *Light leaks *Overdevelopment *Contaminated solutions *Deteriorated film CONE CUT *Improper placement of film *Misalignment of X- ray tube EMULSION PEEL *Abrasion of image during processing *Excessive time in wash water DIMENSIONAL CHANGE *Elongation of image *Shortening of image SCRATCH FILM *Elongation of image *Shortening of image SK AZIZ IKBAL NORTH BENGAL DENTAL COLLEGE AND HOSPITAL