University of Minnesota
School of Physics & Astronomy

Biophysics Seminar

Tuesday, September 21st 2010
2:30 pm:
Biophysics Seminar in 170 Physics
Speaker: Pamela Sooriyan, University of Minnesota
Subject: Dose enhancement in bone due to giant dipole resonance of Ca-40 with photons of 14-20 MeV.
To be announced.

At photon energy of 14-20 MeV, Compton scattering and absorption by pair production are the predominant photon interaction processes. Bone, with a higher atomic number and higher electron density than that of tissue, will absorb more dose than tissue due to both these interaction processes. In addition, maximizing the element selective giant dipole resonance would cause a further significant increase in dose enhancement in the vicinity of bone. This would increase the possibility of delivering a lethal dose to the tumor in or around the bone while keeping dose to normal surrounding tissue as low as possible.

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