Radiant energy – Radiant energy generation and sources – Plural radiation sources
Reexamination Certificate
2008-05-03
2010-06-22
Souw, Bernard E (Department: 2881)
Radiant energy
Radiant energy generation and sources
Plural radiation sources
C250S492100, C250S492300, C250S341700, C378S065000, C600S427000, C600S009000
Reexamination Certificate
active
07741624
ABSTRACT:
A medical accelerator system consisting of coplanar and non-coplanar beams, on line magnetic resonance anatomic and functional imaging and cone beam computed tomographic imaging for single session image guided all field simultaneous radiation therapy and radiosurgery is provided. This system enables single session simulation, field-shaping block making, treatment planning, dose calculations and treatment of tumors. The radiation exposure time to the tumor and the normal tissue is reduced to a few seconds to less than a minute. In filed intensity modulated radiation is rendered by combined divergent and pencil beam, multiple smaller fields within a larger field, selectively varying beam's energy, dose rate and beam weight. Since all the treatment fields are treated simultaneously the dose rate at the tumor site is the sum of each of the converging beam's dose rate at depth. This super-high biological dose rate impairs the lethal and sublethal damage repair.
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