Accelerated helium-ion beams for radiotherapy and stereotactic radiosurgery.
A new beam line for radiotherapy and radiosurgery with accelerated helium-ion beams has been set up at the Bevalac. The new treatment room has been equipped with a very precise patient positioner in order to utilize the superior dose localization properties of light-ion beams. The beam spreading and shaping system is described, the trade-offs involved in positioning the beam modifying devices are discussed, and the physical properties of the generated radiation fields are reported. The Bragg peak modulation by axial beam stacking employing a variable range shifter is explained and the control system including beam monitoring and dosimetry is presented.
Ludewigt
B A
BA
Lawrence Berkeley Laboratory, University of California, Berkeley 94720.
Chu
W T
WT
Phillips
M H
MH
Renner
T R
TR
D006371:Helium; D006801:Humans; D007477:Ions; D010315:Particle Accelerators; D011882:Radiotherapy, High-Energy; D013238:Stereotaxic Techniques
D007477:Ions; D006371:Helium