The
DVH panel provides a facility to evaluate treatment
plans.
After
pressing the DVH button in the Patient panel a menu bar pops up, from
which a target or an organ can be chosen. When a target is chosen,
the DVH panel provides the opportunity to calculate the Tumour
Control Probability (TCP), for an organ the Normal Tissue
Complication Probability (NTCP) can be computed. For organs, the
tolerance
dose is displayed whereas for targets the prescribed dose is shown in
the corresponding field.
Figure
1:
The DVH panel
Functions
of the different elements:
Bin
size textline: Specifies the
width per bin for the display of the dose-volume histogram (default
value: 2cGy)
Maximum
dose: Represents the maximum
value of the displayed dose-volume histogram
Vol(%)/Vol(cc): Value for horizontal slider bar (the other
field is automatically updated)
Dose
(cGy): Value for vertical
slider bar
Tolerance
dose: Display/change of
tolerance dose for an organ
Prescribed
dose: Display/change of
prescribed dose for a target (if dose has not been previously entered
in the volume editor panel, the default value is 0.0)
Statistics: Opens the Statistics panel
Cumulative/Differential: Change of displayed DVH between cumulative
and differential DVH
TCP/NTCP: Brings up the TCP- or the NTCP-panel,
respectively