[Gate-users] Gate dose to water problem

[tony youness]

Hi,

I am simulating high energy photon beams (6 and 10 MeV) for external radiotherapy applications.

I tried both ("Water" and "G4_WATER") and I am still getting NAN values (only when the absorbed dose is reported as absorbed dose to water). The voxel values between both absorbed dose report (Dose to medium and Dose to water) are also different even though that the medium is WATER.

Regards,

Tony

On 31/01/17 8:37 am, Grevillot Loic wrote:
Hello,

Which beam are you simulating? (photons, electrons, light ions, etc.)
Which water did you define in your simulation? “Water” is different from “GEANT4_WATER” -> could you try using GEANT4_WATER?

Best,
Loïc



From: Gate-users [mailto:gate-users-bounces at lists.opengatecollaboration.org] On Behalf Of tony youness
Sent: Monday, January 30, 2017 1:04 PM
To: gate-users at lists.opengatecollaboration.org<mailto:gate-users at lists.opengatecollaboration.org>
Subject: [Gate-users] Gate dose to water problem


Dear All,

I am facing a problem with gate dose actor. When enabling dose to water i get Nan values in some of the voxels in the water region of my phantom. I also get different values in the water voxels between both dose reports (dose to medium and dose to water). It seems like there's a bug when gate tries to converts dose to medium into the dose to water when in the water region. Has anyone already faced this problem? Any help would be much appreciated.

Kind Regards,

Tony Younes






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