Basic technical characteristics of synchrotron:

 

  • Beam energy 70-250 MeV±0.15%

  • Beam energy in tomography mode – 330 MeV ±0.15%;

  • Intensity of the emitted beam – 1·10E9;

  • Acceleration time to 330Мэв – 1 sec.;

  • Slow emission of the beam in the range – 0.1-1 sec.;

  • 100% of the emitted beam reaches the tumor;

  • Average power consumption ~ 50 кWt;

  • Diameter of synchrotron – 5м;

  • Total weight – 25 tonn.

Comparison of time spent per patient.

 

Today’s therapy process using Gantry

15-20 min – immobilization and verification

1-3 min – irradiation

Full time is 20-30 min

 

On our installation

1-2 min – immobilization and verification

1-5 min – irradiation

Full time is 7-10 min

Creating many treatment rooms for irradiation is not necessary.

The dose rate for different volumes of tumor

(spherical tumor independently from the location depth)

Optimized algorithm with IMPT

№= 1·10E9 per cycle, T= 1,5 sec

V              DR

50 cm3 – 10.0 GY/min

200cm3 – 3.2 GY/min

500 cm3 – 1.6 GY/min

Pulse-to-pulse energy changing

© Protom. 2017