[Gate-users] Issue with Dose

[Emmanuel Marfo]

Dear GATE-users,

Please, I have designed my simulation to mimic clinical CT scanner settings where you can have gantry rotation and object translation. From what I know increasing runs or number of projections should increase the dose for circular or helical rotation. I did a quick test using different projections thinking of getting different dose/Edep results but the dose/Edep results remain the same irrespective of the number of projections. Below are the two different runs/projections I tested on.

        (A)                                                               (B)

Gantry(4deg/s)                                    Gantry(1deg/s)

Timesssslice=0.26 s                             Timesssslice=0.26 s

Timestart=0   s                                      Timestart=0 s

Timestop=93.6 s                                   Timestop=374.4 s

NumberofParticles=1e7

All other conditions were the same.

Please, has anyone experienced this before or what am I doing wrong. Need help or some explanations. Thanks


Best regards,

Emmanuel Marfo

Student

University of Otago
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