Rad 354 chapt 10 concepts of rad image quality
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RAD 354 Chapt . 10 Concepts of RAD Image Quality PowerPoint PPT Presentation


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RAD 354 Chapt . 10 Concepts of RAD Image Quality. Radiographic Image Quality – Hi image quality = being able to see clearly on the image Spatial resolution – ability to see SMALL objects that are in close proximity to one another Contrast Resolution - OD differences

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RAD 354 Chapt . 10 Concepts of RAD Image Quality

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Rad 354 chapt 10 concepts of rad image quality

RAD 354 Chapt. 10 Concepts of RAD Image Quality

  • Radiographic Image Quality – Hi image quality = being able to see clearly on the image

  • Spatial resolution – ability to see SMALL objects that are in close proximity to one another

  • Contrast Resolution - OD differences

    • Other key terms: detail, visibility of detail and recorded detail


Terms con t

Terms, con’t

  • Noise; Quantum mottle;

  • System speed

    • Film-screen/receptor (how fast the OD is built up)

    • Characteristic curve (H & D curve, etc); parts of the curve

      • Sensitometry/densitometry

      • Log relative exposure – why .3 increments?


Terms con t1

Terms Con’t

  • Contrast – discuss pt., barium, H2O; body habitus; screen-film/receptor factors

  • Exposure ”latitude” (chemistry/processing/speed of system

  • Geometric factors – discuss/draw all geo. Type factors


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