Proton Beam Therapy at PSI

  1. Example 1 of Proton Beam Therapy Application: Medical Gantry Design with Graphic Transport
  2. Example 2 of Proton Beam Therapy Application: Isotope Production Yield Optimization with Graphic Transport
  3. Example 3 of Proton Beam Therapy Application: Degrader Design for a 250 MeV Medical Cyclotron with Graphic Turtle
  4. Example 4 of Proton Beam Therapy Application: Double Scattering computations for Ocular Tumor Treatment Application with Graphic Turtle
<BODY> <SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript"> </SCRIPT> <NOSCRIPT> <CENTER> <H1>Proton Beam Therapy</H1> Four examples will demonstrate the usefulness of some computer codes for designing medical applications for <B>proton beam therapy</B>. </CENTER> </NOSCRIPT> <H1>Proton Beam Therapy Application Examples by Urs Rohrer</H1> <UL> <LI> <A HREF="gantry.htm">Proton Beam Therapy: Medical Gantry Design</A> </LI> <LI> <A HREF="ip2bl.htm">Proton Beam Therapy: Isotope Production Yield Optimization</A> </LI> <LI> <A HREF="degrader.htm">Proton Beam Therapy: Degrader Design for a 250 MeV Medical Cyclotron</A> </LI> <LI> <A HREF="doubscat.htm">Proton Beam Therapy: Double Scattering computations for Ocular Tumor Treatment Application</A> </LI> </UL> <H4>Proton Beam Optics, Graphic Transport Application, Graphic Turtle Application</H4> <P> A Medical Gantry for protons is a precise <B>Proton Beam Therapy</B> tool for Treating Cancer with ionizing particles. The understanding of the optical design of such a gantry is an important prerequisite when building a Proton Beam Therapy facility. The Graphic Transport Framework is a very handy computer tool for optically designing such a gantry for <B>Proton Beam Therapy</B>. 'Beam line inversion' is the crucial way to solve the problem.<BR> For deep laying tumors the proton energy has to be as high as 250 MeV which may be produced by a superconducting Cyclotron. For doing <B>Proton Beam Therapy</B> with such a cyclotron a degrader has to be used. The Graphic Turtle framework is a well-suited program for studying - with the help of Monte-Carlo methods - the effects degrader material has on the phase space of a fixed energy proton beam extracted from such a cyclotron.<BR> After degradation of a 250 MeV Proton Beam to 70 MeV the Proton Beam Intensity is so low (1 % of the initial intensity) that you need a very efficent application method when doing <B>Proton Beam Therapy</B> for Ocular Tumor Treatment with 1 Gy/s. This may better be accomplished with the double scattering method. The howto of this method is demonstrated with the Graphic Turtle Framework.<BR> Also the Isotope Production with a 70 MeV proton cyclotron may be considered as a <B>Proton Beam Therapy</B> method, if the produced isotopes are used for tracing (e.g. PET) in medicine. Optimizing the production yield of isotopes may be important. The Graphic Transport Framework is a well suited computer tool for a correct optical setup of the needed proton beam line. </P> The four frames with Proton Beam Therapy Applications elaborated and presented here by Urs Rohrer (PSI) are: <UL> <LI> Example 1 of Proton Beam Therapy Application: Medical Gantry Design with Graphic Transport</LI> <LI> Example 2 of Proton Beam Therapy Application: Isotope Production Yield Optimization with Graphic Transport</LI> <LI> Example 3 of Proton Beam Therapy Application: Degrader Design for a 250 MeV Medical Cyclotron with Graphic Turtle </LI> <LI> Example 4 of Proton Beam Therapy Application: Double Scattering computations for Ocular Tumor Treatment Application with Graphic Turtle</LI> </UL> </BODY>