Author: Lu, M.W.
Paper Title Page
FRAO01
 A Compact 10 Telsa Superconducting 250 MeV Synchrocylotron for Cancer Therapy  
 
  • M.W. Lu, G.H. Li, Y. Tian
    Mevionchina, Kunshan, People’s Republic of China
  
  In the 70 years since its conceptual advent, proton therapy has been shown to provide unique clinical advantages in the treatment of cancer and diseases susceptible to ionizing radiation, but widespread adoption has been tempered by its higher cost relative to other types of therapy. The first proton therapy treatments were delivered in 1954 at Lawrence Berkeley Laboratory. In 1990, the first hospital-based proton therapy system was built at Loma Linda University (USA), followed by NCC Kashiwa (Japan) in 1998 and Massachusetts General Hospital (USA) in 2001. These early commercial systems were multi-room designs consisting of a single accelerator serving multiple treatment rooms, with varying configurations of fixed beam and rotating gantries, and represented significant investments in both equipment and facility construction. In 2012, the first compact, single-room proton therapy system was completed at Barnes-Jewish Hospital in St. Louis, with first patient treatment occurring the following year. This novel design by Mevion Medical Systems (then Still River Systems) was based on a very high field synchrocyclotron that is the world’s smallest 250 MeV proton accelerator and is sufficiently compact to be mounted directly on a rotating gantry. The magnet, designed in collaboration with MIT, achieves a field strength of up to 10 Tesla by using Nb₃Sn superconductor cooled to 4°K. All associated subsystems were designed for size and efficiency. While the first-generation product utilized a passive scattering delivery modality, the accelerator design has shown its longevity by also serving as the basis for a pencil beam scanning system.
Writter:Michael Lumb
Speaker:Yuan Tian 		 
slides icon Slides FRAO01 [2.125 MB]  
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