Magnetically Focused Proton Irradiation of Small Volume Targets

      Advances in imaging technologies are fueling a trend in radiation medicine necessitating the irradiation of smaller targets with greater conformity; however, as field size decreases, the peak to entrance dose performance and penumbra of proton beams is degraded by beam broadening due to multiple Coulomb scattering (MCS). Magnetic focusing of protons immediately before entrance into the patient could be used to counteract MCS leading to improved therapeutic ratios and decreased treatment times.
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