[Gate-users] Dose actor

Elia Alessio alessio.elia at medaustron.at
Mon Oct 23 13:16:58 CEST 2017

Dear P.T.,

thanks for your email. Please when you are answering to the people of the community do not forget to keep them in cc by using the gate-users mail list so that everybody can potentially answer.

To calculate energy deposited you have to set as true the flag on energy deposited as follow:

/gate/actor/MyActor/enableEdep                 true

Just add that line to your actor. It will automatically generate a new txt file.

Concerning the set resolution option in general, having a set resolution  1 2 3 is not the same of having a resolution of 2 4 6 for a fix size. You are changing the binning of your score grid in x y z . Therefore also the dimension of your matrix (or array) is changing accordingly in your output file.

Hope it can help


-----Original Message-----
From: P. T. [mailto:ptpphysics at gmail.com]
Sent: Sonntag, 22. Oktober 2017 23:00
To: Elia Alessio <alessio.elia at medaustron.at>
Subject: Re: [Gate-users] Dose actor

Dear Alessio,
Thanks for your prompt response.
I am really sorry for having troubled you so much.

Then, If I have a regular shape, I would score the dose values directly by attaching DoseActor to the desired volume.

But, how can I calculate energy deposited in irregular shape volume?

On the other hand, for a fixed values of "setSize", the "setResolution" only specify the resolution of the output 3D matrix.
Thus, the sum of the numbers (matrix arrays) in the "MyOutputFile.txt"  related to the different setResolution (e.g.
setResolution 1 2 3 and setResolution 2 4 6) should be equal for a fixed value of "setSize". Did I understand correctly?


On 10/22/17, Elia Alessio <alessio.elia at medaustron.at> wrote:
> Dear P.,
> 1- If you have an irregular shape I would recommend do to not score
> the dose values directly but use rather the energy deposited and then
> post-process dose values. as far as I know, the dose actor dose not
> compute correctly the dose if you do not have a regular shape.
> 2- I can see that you are setting size and resolution of your actor
> but then you should consider the dimension of the object that this
> actor is attached to (MyVolume in this case). Could you be more
> specific or provide an example?
> Cheers
> Alessio
> -----Original Message-----
> From: Gate-users
> [mailto:gate-users-bounces at lists.opengatecollaboration.org]
> On Behalf Of P. T.
> Sent: Sonntag, 22. Oktober 2017 21:32
> To: gate-users at lists.opengatecollaboration.org
> Subject: [Gate-users] Dose actor
> Dear Gater,
> Does anyone have any suggestions on how to solve my questions?
> 1- Is it possible to calculate the total deposited dose or energy
> deposition in total volume a cylindrical predefined volume such as
> cylindrical waterbox phantom or in the STL volume?
> 2- Why in some cases the sum of numbers (matrix arrays) in the
> "MyOutputFile.txt"  is not equal when the "setResolution" numbers were
> changed?
> /gate/actor/addActor DoseActor             MyActor
> /gate/actor/MyActor/save                  MyOutputFile.txt
> /gate/actor/MyActor/attachTo              MyVolume
> /gate/actor/MyActor/stepHitType           random
> /gate/actor/MyActor/setSize               5 5 5 m
> /gate/actor/MyActor/setResolution         1 1 3000
> Thanks in advance,
> Best Regards,
> P
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