Source based on DICOM

Source Definition
1

Dear FLUKA Experts,
I am currently working on simulating radionuclide distribution within a phantom based on the DigiMouse model. The model comprises 22 distinct organs, and I aim to define the relative radionuclide distribution individually for each organ.

To achieve this, I am referencing the methodology described in this paper, where it is noted:
“In this case, the radioisotope density map of the mouse is directly used as a source in FLUKA, converting the PET DICOM files.”

I would greatly appreciate your guidance on the following:

  1. How can this process be implemented in FLUKA? I have not encountered an explicit option for this in the DICOM or PET tabs.
  2. Alternatively, is it possible to modify the source.f or new_source.f routines to create a source definition based on material? For example, could a point within a voxel be randomly sampled with the emission probability determined by the assigned material?

Thank you kindly in advance,
Hen

3

Dear @rachel.hen.shukrun

look the card SPECSOUR with option BIN-SOUR
It allows the create a volumetric source using as pdf the content of a 3D Cartessian mesh in the format of a USRBIN.
With flair Dicom tools you can convert any RT-DOSE to USRBIN if needed