Gabriele Cosmo
107 lines
5.2 KiB
Plaintext
107 lines
5.2 KiB
Plaintext
|
|
=========================================================
|
|
Geant4 - Brachytherapy example
|
|
=========================================================
|
|
|
|
README
|
|
---------------------
|
|
|
|
------------------------------------------------------------------------
|
|
----> Introduction. |
|
|
|
|
Brachytherapy example simulates energy deposit in a Phantom filled with |
|
|
soft tissue for:
|
|
1) Iridium source (endocavitary brachytherapy). |
|
|
2) Iodium source (interstitial brachytherapy).
|
|
3) Leipzig Applicator (superficial brachytherapy). |
|
|
------------------------------------------------------------------------
|
|
----> 1.Experimental set-up. |
|
|
|
|
The default source is an Ir-131 source put in the center of the Phantom.|
|
|
The Phantom is a box (dimension:30cm), it is gridded in
|
|
voxels (1.mm dimension) |
|
|
-------------------------------------------------------------------------
|
|
----> 2.SET-UP
|
|
|
|
|
-example enviroment with the compiler 3.2.3
|
|
-a standard Geant4 example GNUmakefile is provided |
|
|
|
|
setup with: |
|
|
compiler = gcc-3.2.3
|
|
G4SYSTEM = linux-g++ |
|
|
|
|
The following environment variables need to be set: |
|
|
|
|
G4LEDATA: points to low energy data base - G4EMLOW2.3 |
|
|
|
|
setup for analysis: AIDA 3.2.1, PI 1.2.1 |
|
|
|
|
Users can download the analysis tools from:
|
|
|
|
|
http://aida.freehep.org/
|
|
http://www.cern.ch/PI |
|
|
|
|
------------------------------------------------------------------------
|
|
----> 3.How to run the example. |
|
|
|
|
- batch mode:
|
|
$G4WORDIR/bin/Linux-g++/Brachy IridiumSourceMacro.mac |
|
|
$G4WORDIR/bin/Linux-g++/Brachy IodiumSourceMacro.mac
|
|
$G4WORDIR/bin/Linux-g++/Brachy LeipzigSourceMacro.mac
|
|
|
|
|
- Interative mode:
|
|
3) $G4WORDIR/bin/Linux-g++/Brachy
|
|
The VisualisationMacro.mac is loaded automatically |
|
|
|
|
-->possible different configurations for interactive mode: |
|
|
|
|
1)Ir source: |
|
|
idle>/run/beamOn NumberOfEvents ...and then
|
|
idle>exit |
|
|
|
|
2)Leipzig Applicator: |
|
|
idle>/source/switch Leipzig
|
|
idle>/run/beamOn NumberOfEvents ...and then |
|
|
idle> exit
|
|
|
|
|
3) Iodium source:
|
|
idle>/source/switch Iodium |
|
|
idle>/run/energy Iodium
|
|
idle>/run/beamOn NumberOfEvents ...and then |
|
|
idle>exit
|
|
|
|
|
*Before the run you can also change the absorber material of the
|
|
Phantom: |
|
|
idle>/phantom/selectMaterial materialName
|
|
|
|
|
- batch mode: executable Brachy macroFile.mac
|
|
macros are provided as example: IodiumSourceMacro.mac,
|
|
IridiumSourceMacro.mac, LeipzigSourceMacro.mac |
|
|
(ex. $G4WORKDIR/bin/Linux-g++/Brachy IodiumSourceMacro.mac)
|
|
------------------------------------------------------------------------
|
|
----> 4. Simulation output |
|
|
|
|
if ANALYSIS_USE = 1 in the set-up, the output is brachytherapy.hbk |
|
|
|
|
It contains:
|
|
1)1Dhistogram with the primary particle energy |
|
|
2)2Dhistogram with the distribution of energy in the plane
|
|
(x,z,energy) containing the source (YThickness = 1. mm)
|
|
3)1Dhistogram with the energy deposit along the X axis in the plane |
|
|
containing the source.
|
|
4)Ntuple with the 3D energy deposit in the Phantom
|
|
|
|
|
Units: the energy deposit is in MeV;
|
|
x, y, z in mm for histograms and ntuple |
|
|
------------------------------------------------------------------------
|
|
----> 5.Visualisation |
|
|
|
|
a macro is provided ad example of visualisation: VisualisationMacro.mac|
|
|
|
|
------------------------------------------------------------------------
|
|
|
|
for comments, advices, doubts and questions: guatelli@ge.infn.it
|
|
for more info http://www.ge.infn.it/geant4/examples/index.html
|
|
|
|
last modified: Susanna Guatelli 14/5/2004
|