[Gate-users] Dose Uncertainty

[Josh Knowland]

Hello Meryem,

I am using text file dose actor output, and I convert the relative uncertainties to absolute by multiplying uncertainty by dose on a voxel basis. Then, you can add the absolute uncertainties to get total uncertainty.

I assume root files allow the same sort of operation, but I’m not sure.

Hope that help,
Josh




From: meryem fiak <fiakmeryem.13 at gmail.com>
Sent: Tuesday, August 6, 2019 6:21 AM
To: Josh Knowland <jknowland at lucernodynamics.com>
Cc: gate-users at lists.opengatecollaboration.org
Subject: Re: [Gate-users] Dose Uncertainty

Hello,
In the same context, how can we get the relative statistical uncertainty from Dose Actor when the simulation is split into several jobs. I read that the
uncertainty in this case can be calculated retrospectively but I don't know how it applies. For information, I use Root as output. Do I have to merge the uncertainty of all the jobs?

Best Regards.
Meriem

Le mer. 31 juil. 2019 à 15:26, Josh Knowland <jknowland at lucernodynamics.com<mailto:jknowland at lucernodynamics.com>> a écrit :
All – good morning,
How can I interpret the dose-uncertainty output from Gate? I have Dose, Dose-Squared, and Dose-Uncertainty text files, but what units are the uncertainty number?



Dose
####################################
# Matrix Size= (10,10,10)
# Resol      = (1,1,1)
# VoxelSize  = (10,10,10)
# nbVal      = 1
####################################
2.879146507e-05


Dose-Squared
####################################
# Matrix Size= (10,10,10)
# Resol      = (1,1,1)
# VoxelSize  = (10,10,10)
# nbVal      = 1
####################################
3.463765531e-15


Dose-Uncertainty
####################################
# Matrix Size= (10,10,10)
# Resol      = (1,1,1)
# VoxelSize  = (10,10,10)
# nbVal      = 1
####################################
0.001135445931





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