[Gate-users] DoseActor sensitivity to setResolution
tstoole at zoho.com
Mon Aug 13 20:01:07 CEST 2018
Hi, I am trying to determine the accumulated dose at the isocenter of a CT. I have been adjusting the parameter setResolution and looking at the effect it has on the total dose. My understanding is that setResolution will divide up my dose actor volume into this many dosels to measure the dose. I expected that if I continued to increase the setResolution values, the sum of the values in the dose output file would approach some value, the total dose (in Gy). But I am seeing that as I increase the setResolution values, the the sum of the values in myDoseActorOutput.txt file keeps increasing. If someone can please let me know what I am doing wrong, I would appreciate it very much. I am using vGate8.0. Here is the part of my simulation that deals with the dose actor. Thanks, Terry /gate/world/daughters/name airCyl /gate/world/daughters/insert cylinder /gate/airCyl/geometry/setRmin 0.0 mm /gate/airCyl/geometry/setRmax 3.09 mm /gate/airCyl/geometry/setHeight 100.0 mm /gate/airCyl/placement/setRotationAxis 0 1 0 /gate/airCyl/placement/setRotationAngle 90.0 deg /gate/airCyl/setMaterial Air /gate/airCyl/vis/forceSolid #/gate/airCyl/vis/forceWireframe /gate/airCyl/vis/setColor magenta /gate/actor/addActor DoseActor myDoseActor /gate/actor/myDoseActor/save myDoseActorOutput.txt /gate/actor/myDoseActor/attachTo airCyl /gate/actor/myDoseActor/enableDose true /gate/actor/myDoseActor/enableEdep false /gate/actor/myDoseActor/enableUncertaintyDose false /gate/actor/myDoseActor/enableUncertaintyEdep false /gate/actor/myDoseActor/enableNumberOfHits true /gate/actor/myDoseActor/stepHitType random #/gate/actor/myDoseActor/setSize 100 100 100 mm /gate/actor/myDoseActor/setResolution 100 100 50
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