[Gate-users] Negative number in dose uncertainty

Mery MB mery.mb.mph at gmail.com
Tue Jun 12 09:54:57 CEST 2018

Hi Dear Gate User

I am trying to calculate dose distribution on a voxelized phantom in Gate
for a tangential field of breast cancer. I run  each field for 5*10 to
power of 10 particles. when I checked the dose uncertainty of each field
the number of each voxel is negative?  what does it mean?

Another question which I have is : How I can calculate (add) dose
uncertainty due to summation of two separate dose matrix?

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