Best Particle Therapy, Inc. has designed an ion Rapid Cycling Medical Synchrotron (iRCMS). Using protons, carbon, and lighter ions, this synchrotron is designed to treat the cancer patients with the ultimate treatment flexibility.
The iRCMS's cycle is 100 times faster than "slow cycling" synchrotrons, resulting in the capacity for the number of protons accelerated per cycle to be as much as 100 times smaller for a fixed treatment time. This results in faster energy change, less beams per cycle, efficient and fast beam extraction while still maintaining energy flexibility, better control of delivered dose, and smaller magnet size. It also has a low energy injector system and low beam intensities, decreasing the risk of excess beam being delivered to the patient, and further, a lack of unwanted doses from beam produced neutrons.
In comparison to slow cycling synchrotrons and cyclotrons, the iRCMS is faster, lighter, more accurate, and is compatible with proton, carbon, simple, and future modalities.
It will be the cancer treatment solution of the future.
Shielding Estimate Comparisons
|Accelerator Comparison Table|
|Maximum Credible Incidence (MCI)|
|Maximum Energy||Ave. Current
|Shielding (50 mSv/yr)|
|Isynchronous Cyclotron (NC)||230 MeV||2 nA||1250 nC/s||625||2.89 m|
|Isynchronous Cyclotron (SC)||250 MeV||2 nA||313 nC/s||156||2.44 m|
|Synchro Cyclotron (SC)||250 MeV||2 nA||1 nC/s||0.5||0.54 m|
|Slow Cycle Synchrotron||250 MeV||2 nA||20 nC/s||10||1.53 m|
|Rapid Cycle Synchrotron||1200 MeV||2 nA||0.133 nC/s||0.067||0.13 m|
*MCI = Maximum Credible Incidence
Estimates above were calculated using the Moyer Model
- Neutron source terms for 177 MeV protons
Neutron transmission factors
- Neutron attenuation length in concrete (SLAC PUB 130339)
Final shielding calculations use a full scale Monte Carlo method
- (MCNPX, GEANT, FLUKA)
For more information on the ion Rapid Cycling Medical Synchrotron, please click here.