Film contrast - PowerPoint PPT Presentation

Quality Control

Quality Control. HIGH QUALITY FILMS. REPRODUCES ANATOMICAL IMAGE EXACTLY FILM HAS: CORRECT TECHNICAL FACTORS NO MOTION NO ARTIFACTS PROCESSED CORRECTLY. RESOLUTION. ABLE TO VISUALLY SEPARATE OBJECTS BONE VS. TISSUE-- IE: SPATIAL RESOLUTION CR VS CONVENTIONAL FILM

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733 views • 38 slides

5 Films and Luminescent Screens

5 Films and Luminescent Screens. Film is not a good medium for recording x-rays directly; only 2-3% of x-rays are absorbed by the film. 1: Use fluorescent screen to convert x-rays to light. 2: Record light with film. Flourescent Screens reduce patient exposure to x-rays.

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1.23k views • 24 slides

Radiographic Contrast

Radiographic Contrast. Contrast. The range of density variation among the light and dark areas on a radiographic image. A difference in density on adjacent anatomic structures. Radiographic Contrast. The overall contrast of a radiograph Dependent on two factors. Subject contrast

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874 views • 17 slides

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