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IMAGING MODALITIES

IMAGING MODALITIES. Intraoral Radiography Panoramic Radiography Conventional Tomography Computed Tomography Cone Beam Computed Tomography. PARALLELING TECHNIQUE IS RECOMMENDED. IMAGE WAS INTENTIONALLY FORESHORTENED. PARALLELING TECHNIQUE. Unsharpness Shape Distortion Magnification.

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IMAGING MODALITIES

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  1. IMAGING MODALITIES • Intraoral Radiography • Panoramic Radiography • Conventional Tomography • Computed Tomography • Cone Beam Computed Tomography

  2. PARALLELING TECHNIQUE IS RECOMMENDED IMAGE WAS INTENTIONALLY FORESHORTENED PARALLELING TECHNIQUE

  3. UnsharpnessShape DistortionMagnification

  4. In conventional tomography, a separate exposure is made to produce each cross-sectional image.

  5. Advantages • No superimposition of structures • Image acquisition in multiple planes • Hard-tissue and soft-tissue imaging • Digital image enhancement

  6. MAXILLA

  7. MANDIBLE

  8. CONE BEAM CT Cone shaped beam One flat panel sensor

  9. Advantages/Disadvantages over Medical CT Less radiation Lower cost Image Noise Poor soft-tissue contrast Fixed imaging volume

  10. More scatter radiation Poor soft-tissue contrast MEDICAL CT CONE BEAM CT

  11. Benefits of Cross-Sectional Imaging

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