8.3 - Photon Beam Dose Distribution

The distribution of dose from a photon beam is dependent on numerous factors. The most important is beam energy, which causes significant differences in the distribution of dose from kilovoltage compared with megavoltage photon beams.

Dose Distribution Topics

• Primary and Secondary Radiation
• Descriptors of Dose Distribution
• Factors Effecting Dose Distribution
• Patient Contour
• Inhomogeneity

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Links

• 08: Photon Beam Radiotherapy
  • 8.1 - Cobalt 60 Teletherapy
  • 8.2 - Measurement Of Photon Beams
  • 8.3 - Photon Beam Dose Distribution
    • 8.3.1 - Primary And Secondary Radiation
    • 8.3.2 - Descriptors Of Dose Distribution (Photons)
    • 8.3.3 - Treatment Factors Influencing Dose Distribution (Photons)
    • 8.3.4 - Patient Contour (Photons)
    • 8.3.5 - Inhomogeneity
  • 8.4 - Photon Beam Modification
    • 8.4.1 - Field Size Modification (MV Photons)
    • 8.4.2 - Field Size Modification (kV photons)
    • 8.4.3 - Compensation (Photon Beams)
    • 8.4.4 - Shielding Of Organs At Risk
    • 8.4.5 - Modification Of Skin Dose Photons
  • 8.5 - Photon Beam Treatment Techniques
  • 8.6 - Photon Beam Calculations