Heavy Ion Radiotherapy for Shallow-Seated Tumors at IMP

Abstract

By the end of 2008, clinical trials of heavy-ion radiotherapy for shallow-seated tumors have been carried out for seven times and 82 selected patients have been treated with 80-100 MeVu− 1 carbon ions supplied by the Heavy Ion Research Facility in Lanzhou (HIRFL) at the Institute of Modern Physics, Chinese Academy of Sciences (IMP-CAS) since November, 2006. A passive irradiation system for 2D layer-stacking method and a dose optimization method for radiotherapy with carbon ions have been developed. The present paper will describe the approach of how we carry out the treatment of shallow-seated tumors. Experimental verification of longitudinally therapeutic dose distribution was conducted under the condition of simulating patient treatment in the therapy terminal at HIRFL. The experimental and clinical results indicate that the therapy system is effective and the heavy ion radiotherapy for superficially-placed tumors at IMP is successful.