Multi-field charged particle cancer therapy method and apparatus

摘要

The invention relates generally to treatment of solid cancers. More particularly, the invention relates to a multi-field charged particle cancer therapy method and apparatus coordinated with negative ion beam creation, ion beam focusing, charged particle acceleration, patient rotation, and/or patient respiration. Preferably, the charged particle therapy is performed on a patient in a partially immobilized and repositionable position. Proton delivery is preferably timed to patient respiration via control of charged particle beam injection, acceleration, and/or targeting methods and apparatus.

主权项

1. An apparatus for generating a negative ion beam for use with charged particle radiation therapy, comprising:
a negative ion source comprising:
a magnetic material; anda high temperature plasma chamber substantially encompassing said magnetic material;wherein said high temperature plasma chamber comprises: a first ion generation electrode at a first end of said high temperature plasma chamber, a second ion generation electrode at a second end of said high temperature plasma chamber, and a magnetic field carrying outer wall;wherein application of a first high voltage pulse across said first ion generation electrode and said second ion generation electrode breaks hydrogen in said high temperature plasma chamber into component parts;wherein said magnetic material yields a magnetic field loop running through said first ion generation electrode, through said magnetic field carrying outer wall, through said second ion generation electrode, across a gap, and through said magnetic material;wherein said magnetic field loop yields a magnetic barrier across said gap between said high temperature plasma chamber and a low temperature plasma region, said magnetic barrier passing a subset of said component parts;wherein low energy electrons interact with atomic hydrogen to create hydrogen anions in said low temperature plasma region;wherein application of a second high voltage pulse across said second ion generation electrode and a third ion generation electrode extracts negative ions from said negative ion source into a negative ion beam.