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Cutoff method #781

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Merged
merged 1 commit into from
Oct 15, 2024
Merged

Cutoff method #781

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5 changes: 4 additions & 1 deletion matRad/doseCalc/+DoseEngines/matRad_ParticleHongPencilBeamEngine.m
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Original file line number Diff line number Diff line change
Expand Up @@ -74,7 +74,10 @@
matRad_cfg.dispError('Invalid Lateral Model');
end

bixel.physicalDose = bixel.baseData.LatCutOff.CompFac * L .* kernels.Z;
if length(bixel.baseData.LatCutOff.CompFac) > 1
bixel.baseData.LatCutOff.CompFac = matRad_interp1(bixel.baseData.LatCutOff.depths', bixel.baseData.LatCutOff.CompFac', bixel.radDepths);
end
bixel.physicalDose = bixel.baseData.LatCutOff.CompFac .* L .* kernels.Z;

% check if we have valid dose values
if any(isnan(bixel.physicalDose)) || any(bixel.physicalDose<0)
Expand Down
10 changes: 7 additions & 3 deletions matRad/doseCalc/+DoseEngines/matRad_ParticlePencilBeamEngineAbstract.m
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Expand Up @@ -714,14 +714,15 @@ function calcLateralParticleCutOff(this,cutOffLevel,stfElement)

% Find radius at which integrated dose becomes
% bigger than cutoff * IDD

switch this.cutOffMethod
case 'integral'
IX = find(cumArea >= idd(j) * cutOffLevel,1, 'first');
this.machine.data(energyIx).LatCutOff.CompFac = cutOffLevel^-1;
case 'relative'
IX = find(dose_r <= (1-cutOffLevel) * max(dose_r), 1, 'first');
relFac = cumArea(IX)./cumArea(end); % (or idd(j)) to find the appropriate integral of dose
this.machine.data(energyIx).LatCutOff.CompFac = relFac^-1;
this.machine.data(energyIx).LatCutOff.CompFac(j) = relFac^-1;
otherwise
matRad_cfg.dispError('LateralParticleCutOff: Invalid Cutoff Method. Must be ''integral'' or ''relative''!');
end
Expand Down Expand Up @@ -872,14 +873,17 @@ function calcLateralParticleCutOff(this,cutOffLevel,stfElement)
else
idd = this.machine.data(energyIx).Z;
end
if length(TmpCompFac)>1
TmpCompFac = matRad_interp1(depthValues, TmpCompFac', radDepths);
end
subplot(312),plot(this.machine.data(energyIx).depths,idd*conversionFactor,'k','LineWidth',2),grid on,hold on
plot(radDepths - this.machine.data(energyIx).offset,vDoseInt,'r--','LineWidth',2),hold on,
plot(radDepths - this.machine.data(energyIx).offset,vDoseInt * TmpCompFac,'bx','LineWidth',1),hold on,
plot(radDepths - this.machine.data(energyIx).offset,vDoseInt .* TmpCompFac,'bx','LineWidth',1),hold on,
legend({'original IDD',['cut off IDD at ' num2str(cutOffLevel) '%'],'cut off IDD with compensation'},'Location','northwest'),
xlabel('z [mm]'),ylabel('[MeV cm^2 /(g * primary)]'),set(gca,'FontSize',12)

totEnergy = trapz(this.machine.data(energyIx).depths,idd*conversionFactor) ;
totEnergyCutOff = trapz(radDepths,vDoseInt * TmpCompFac) ;
totEnergyCutOff = trapz(radDepths,vDoseInt .* TmpCompFac) ;
relDiff = ((totEnergy/totEnergyCutOff)-1)*100;
title(['rel diff of integral dose ' num2str(relDiff) '%']);
baseData.LatCutOff.CompFac = TmpCompFac;
Expand Down
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