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<p>Dear Maikol,</p>
<p>As far as I know what you request would require (a significant
amount of) extra code in both Geant4 and GATE to achieve.<br>
</p>
The complicated volumes like G4TwistedTrd are not widely used, so I
would be surprised if they are available for non-trivial use in any
general application created on top of Geant4 - including GATE. (
I.e. maybe in some you could create an 'unimportant' volume - one
which might influence the simulation slightly, but you don't need to
sub-divide it.)<br>
<br>
Slicing a relatively simple like a G4Para into slanted volume
elements (not 'rectangular' voxels) is already a non-trivial
effort. Doing it for a complicated volume like G4TwistedTrd or a
Tesselated volume is even harder, likely requiring a much larger
effort to achieve. <br>
<br>
Note: This is not an authoritative GATE answer - the GATE authors
could provide confirmation/correction.<br>
<br>
John<br>
<br>
<div class="moz-cite-prefix">On 17/03/17 10:37, maikol salas ramirez
wrote:<br>
</div>
<blockquote
cite="mid:CAAGVOVn96r=AHwCjdjjBa6AJbaLMfog5rC4Og_H8CEPiprBfRQ@mail.gmail.com"
type="cite">
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<div dir="ltr">Hi
<div><br>
</div>
<div>I would like to simulate a parametric surface volume, but
trying to avoid the use of a Voxel grid, due to the energy of
the electrons (low energy) that I have to simulate, it is
expected some problems of overestimation of the surface area
of the interfaces (even for very small voxel), due to the
voxelized interfaces.</div>
<div><br>
</div>
<div>I am wondering if in Gate is possible to introduce a
parametric volume for example a twisted trapezoid as in GEANT4
(<span
style="color:rgb(0,0,0);font-family:courier;font-size:medium">G4TwistedTrd</span><span
style="color:rgb(0,0,0);font-family:courier;font-size:medium">) </span>where
the "voxels" are deformed (no cubic) and to obtain the Dose in
the volume (like a concrete value), not in a squared Dose grid
as is the case of the DoseActor. And mainly avoid a voxelized
interface.</div>
<div><br>
</div>
<div>The general idea is working with CAD, mesh data or
parametric volumes.</div>
<div><br>
</div>
<div>I appreciate your advises.</div>
<div><br>
</div>
<div>Best regards</div>
<div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
<br>
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