Regensburg 2010 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
ST: Fachverband Strahlen- und Medizinphysik
ST 12: High-LET Radiation Therapy 2
ST 12.2: Vortrag
Donnerstag, 25. März 2010, 11:20–11:40, H41
Real Time Imaging of Stopping Distributions in Biological Targets for Antiprotons — •Stefan Sellner1, Rebecca Boll1, Sara Tegami1, Carsten P. Welsch1,2, and Michael H. Holzscheiter1,3 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Deutschland — 2Cockcroft Institute and University of Liverpool, UK — 3University of New Mexico, Albuquerque, USA
Antiprotons are interesting particles that have special properties when used in possible cancer particle therapy. They behave almost the same as protons in the entrance channel but deposit additional annihilation energy when they come to rest in the Bragg peak region. Thus, the number of antiprotons can be reduced while still delivering the same target dose to the tumor. Healthy tissue in the entrance channel is finally less harmed compared to protons which is a ultimate goal for good cancer treatment.
Additionally, annihilation energy partially goes into the creation of new particles, especially pions. They exit the body mostly non-interacting and can be detected with an external detector, enabling a real time supervision of the irradiation process. This is currently not possible in any particle treatment method.
In our contribution we will present model calculations for a low-cost real time detector setup and compare these to results from the recent experiment carried out with the Antiproton Cell Experiment (ACE) Collaboration at the Antiproton Decelerator (AD) at CERN as well as develop improved set-ups for future experiments.