3. A dynamic collimation system improving target conformity of spot scanning proton therapy: comparison of dose calculations for two nozzles

Spot scanning proton therapy (SSPT) treatments suffer from poor conformity, especially at low energy, due to increased lateral spot size, which is further increased with the patient scattering. The University of Iowa Hospitals and Clinics recently proposed a dynamic collimation system (DCS) for SSPT, which is capable of providing spot-by-spot collimation. The purpose of this study is to quantify by simulations improvement in target conformity from the use of the DCS, in brain and head and neck tumor treatments.

Source: Physica Medica: European Journal of Medical Physics - November 30, 2016 Category: Journals (General) Authors: A. Moignier, E. Gelover, B.R. Smith, D. Wang, R.T. Flynn, M.L. Kirk, L. Lin, T.D. Solberg, A. Lin, D.E. Hyer Source Type: research