[Gate-users] Activity range

[Simon Stute]

Hi all,

I am simulating NCAT voxelized phantom and I am using interfile format for
attenuation and activity.
I would like to know when we fixe the activity (in the file
activity_range.dat), if the activity values are per pixel or per cm3.
If I take the example in the Gate Users Manual :

|     # set the number of subdivisions
|     6
|     # define the intervals ex. [200,210] and attach a correlated activity:
1. Bq in this example
|     200    210      1.
|     211    220      3.
|     221    230      5.
|     231    240     10.
|     241    250     20.
|     251    255     40.


The value 1. Bq is per pixel or per cm3 (or other) ??

Many thanks.
Simon
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