1. Pushing Brachytherapy one step Further Bryce Allred Dec. 6 th 2010

2. Brachytherapy Methods

3. Brachytherapy Isotopes 1910- urethral radium  1601 yr half life  1922- many complications Au-198  γ-ray of.412 MeV  Half life of 2.7 days I-125 –.027 MeV γ rays – 60 day half life

4. α/β Ratios - N*(α*D+β*D^2) S= e α is the linear term dealing with double strand break β Is the quadratic term dealing with single strand break

5. New Isotopes Palladium-103 has proven to be very effective External beam therapy is currently compensating for lack of brachytherapy

6. Electrons travel finite distance A photons probability of attenuation makes it unsafe Electrons can treat an organ without harming other organs

7. Choosing Isotope Needs similarly even distribution Energy of around 5 MeV and a half life between 10 and 40 days

8. Conclusion May prove to be very effective in isolating treatment. Computer simulations and phantom readings will be used to perform research