[Gate-users] Materials for CT (FFDA) simulation

[Simon Rit]

Hi,
Yes, I confirm. You should be able to check with simple voxelized
geometries. This is not specific to FFDA, see
http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.2:Voxelized_Source_and_Phantom#Example_of_voxelized_phantom_description_macro
You can manually edit this file to create another range of values with
another material, e.g., append
2210 5000 G4_Ti
Database is here:
http://geant4.cern.ch/UserDocumentation/UsersGuides/ForApplicationDeveloper/BackupVersions/V9.3/html/apas09.html
You can also use materials in the Gate material database (see Gate wiki for
more info).
Best regards,
Simon

On Mon, Nov 13, 2017 at 4:52 PM, Shiras Abdurahman <shiraska at gmail.com>
wrote:

> Hi,
>
> I am using FFDA for CT projection simulation from voxelized phantoms. I
> utilize ICRP_HUmaterials.db for material description and a separate text
> file called cylinder.mat to map HU to material (/gate/patient/geometry/setHUToMaterialFile).
> The content of the text file is given below:
> -10 10 Vacuum
> 10   1010 G4_WATER
> 1010 2210 G4_BONE_COMPACT_ICRU
> For a volume which contains air, water, and bone, I set the corresponding
> voxels with HU values 0, 1000 and 2000. Could you please confirm whether
> these values are correct? I would also like to add objects which
> represent Titanium implants. So what should I do in this regard?
>
> With regards,
> Shiras
>
>
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