Pushing Brachytherapy one step Further
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Bryce Allred Dec. 6 th 2010. Pushing Brachytherapy one step Further. Brachytherapy Methods. 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. α/β Ratios. - PowerPoint PPT Presentation
Transcript of Pushing Brachytherapy one step Further
Pushing Brachytherapy
one step FurtherBryce AllredDec. 6th 2010
Brachytherapy Methods
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
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
New Isotopes Palladium-103 has
proven to be very effective
External beam therapy is currently compensating for lack of brachytherapy
Electrons travel finite distance A photons probability
of attenuation makes it unsafe
Electrons can treat an organ without harming other organs
Choosing Isotope Needs similarly even
distribution Energy of around 5
MeV and a half life between 10 and 40 days
Conclusion
May prove to be very effective in isolating treatment.
Computer simulations and phantom readings will be used to perform research
