W. Davis Lee,Artur Teymurazyan,Mark R. Amato,Scott Penfold,James P. Bennett
申请号：
US15489396
公开号：
US20170216632A1
申请日:
2017.04.17
申请国别(地区):
US
年份:
2017
代理人:
摘要：
The invention comprises a method and apparatus for directing a positively charged particle beam to a tumor of a patient, comprising the steps of: (1) transporting the positively charged particle beam sequentially from a synchrotron, through a beam transport line, and through a nozzle system toward the tumor, the beam transport line comprising a rotatable beamline section (2) pre-rotating the positively charged particle beam using a solenoid, the solenoid positioned in the beam transport line between the synchrotron and the rotatable beamline section and (3) rotating the rotatable beamline section, where the step of pre-rotating maintains a geometric relationship between a radial cross-section of the positively charged particle beam and magnet surfaces in the rotatable beamline section as a function of rotation of the rotatable beamline section, which reduces otherwise changed dispersive forces as the rotatable beamline is positioned in separate areas about the patient.
