1. Gate-simulation of dose G4: David Nokto & Anette Kniberg

2. Clinical background Organs with radioactive isotope (source organs) …. …irradiate other organs (target organs).

3. Estimating dose -

4. GATE /gate/world/daughters/name Nettan /gate/world/daughters/insert cylinder /gate/Nettan/setMaterial Water /gate/Nettan/vis/forceWireframe /gate/Nettan/vis/setColor blue /gate/Nettan/geometry/setRmax 10. cm /gate/Nettan/geometry/setHeight 20. cm /gate/geometry/rebuild

5. Purpose Goal of miniproject: create a simple simulation that calculates the dose in the target organ from the source organ Progress thus far: a simulation with a point source and cylinder shaped phantom tissue has been run with readable output.

7. Source Preliminary tests with Technetium-99m Energy: ca 140 keV Decay time: ca 6 hours

8. Next steps for our project Interpret the generated output A more controlled simulation Set energy cuts More types of interactions (now: just compton) Volume to source (now: a point source) Gradually increase complexity (change isotope, geometries)