Treatment Planning
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Direct histogram disaplys the volume of the organ that receives dose within each dose bin.

  • Most useful for display of the dose-to-target volumes

Cumulative DVH integrates the direct histogram.

  • Most commonly used in radiotherapy.
  • point on the curve represents the volume of an organ that receives a given dose or greater.


Differential DVH compares DVHs formed with different dose bin sizes, because theo volume contained in any dose bin chagnes as the dose bin size chagnes.
Plots (1/Dbin)*DV/DD.

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