[Gate-users] Gate dose/edep in cylindrical coordinates?

[David Sarrut]

Hello Andreas,

(I forward to gate mailing list as it can be useful to other users).

To date, no tool is provided to score edep with cylindrical coordinates. It
can be done from phase space, but it is tedious (and, as you say, the file
start to be big quickly).

The best approach should be to start writing a new dedicated Actor,
inspired from GateDoseActor. For that, you need first to define a file
format to store result in cylindrical coordinates, and allow the user to
define the coordinate systems. Then, the main goal os to convert step
position into that coord system. With the (cartesian) DoseActor, this is
performed in the this function
<https://github.com/OpenGATE/Gate/blob/develop/source/digits_hits/src/GateVImageActor.cc#L353>
that compute the index of the pixel according to the step coordinates
position. This function is call in GateVImageActor::UserSteppingAction, and
GateDoseActor inherit from this class.

David


On Mon, Sep 26, 2016 at 6:22 PM, Andreas Resch <resch.andi at gmail.com> wrote:

> Hi David,
>
> I was wondering if I can score the energy deposition in cylindrical
> coordinates without angular information Edep(depth, radius).
>
>
> Aparently it looks like not. The GateVImageActor uses x,y,z.
> Do you know any workaround apart from the phaseSpace actor (it seems that
> the files become large when enabling all steps..)
>
> Maybe sth. like the energySpectrum actor?
>
> Cheers,
> Andreas
>



-- 
David Sarrut, Phd
Directeur de recherche CNRS
CREATIS, UMR CNRS 5220, Inserm U1206
Centre de lutte contre le cancer Léon Bérard
28 rue Laënnec, 69373 Lyon cedex 08
Tel : 04 78 78 51 51 / 06 74 72 05 42
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