// Calculate Volume at Dose.
public static double GetVolumeAtDose(this PlanningItem pitem, Structure structure, DoseValue dose, VolumePresentation requestedVolumePresentation)
{
if (pitem is PlanSetup)
{
//try catch statement to switch dose units to system presentation. Otherwise exception "Dose Units do not match to system settings
try
{
return(((PlanSetup)pitem).GetVolumeAtDose(structure, dose, requestedVolumePresentation));
}
catch
{
if (dose.Unit.CompareTo(DoseValue.DoseUnit.cGy) == 0)
{
return(((PlanSetup)pitem).GetVolumeAtDose(structure, new DoseValue(dose.Dose / 100, DoseValue.DoseUnit.Gy), requestedVolumePresentation));
}
else if (dose.Unit.CompareTo(DoseValue.DoseUnit.Gy) == 0)
{
return(((PlanSetup)pitem).GetVolumeAtDose(structure, new DoseValue(dose.Dose * 100, DoseValue.DoseUnit.cGy), requestedVolumePresentation));
}
else
{
return(((PlanSetup)pitem).GetVolumeAtDose(structure, dose, requestedVolumePresentation));
}
}
}
else
{
DVHData dvh = pitem.GetDVHCumulativeData(structure, DoseValuePresentation.Absolute, requestedVolumePresentation, 0.001);
// Convert dose unit to system unit: otherwise false output without warning.
try
{
((PlanSum)pitem).PlanSetups.First().GetVolumeAtDose(structure, dose, requestedVolumePresentation);
return(DvhExtensions.VolumeAtDose(dvh, dose.Dose));
}
catch
{
if (dose.Unit.CompareTo(DoseValue.DoseUnit.cGy) == 0)
{
return(DvhExtensions.VolumeAtDose(dvh, dose.Dose / 100));
}
else if (dose.Unit.CompareTo(DoseValue.DoseUnit.Gy) == 0)
{
return(DvhExtensions.VolumeAtDose(dvh, dose.Dose * 100));
}
else
{
return(DvhExtensions.VolumeAtDose(dvh, dose.Dose));
}
}
}
}
// Calculate Dose at Volume.
public static DoseValue GetDoseAtVolume(this PlanningItem pitem, Structure structure, double volume, VolumePresentation volumePresentation, DoseValuePresentation requestedDosePresentation)
{
if (pitem is PlanSetup)
{
return(((PlanSetup)pitem).GetDoseAtVolume(structure, volume, volumePresentation, requestedDosePresentation));
}
else
{
if (requestedDosePresentation != DoseValuePresentation.Absolute)
{
throw new ApplicationException("Only absolute dose supported for Plan Sums");
}
DVHData dvh = pitem.GetDVHCumulativeData(structure, DoseValuePresentation.Absolute, volumePresentation, 0.001);
return(DvhExtensions.DoseAtVolume(dvh, volume));
}
}
