Radiation treatment using x-ray source
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United States of America Patent
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Aug 24, 2010
Grant Date -
Apr 14, 2005
app pub date -
Oct 8, 2004
filing date -
Oct 10, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods and apparatus are described for irradiating living tissue via a cavity or lumen, using an inflatable balloon applicator. In a preferred embodiment the applicator balloon has a balloon skin with x-ray contrast material in relatively low concentration, so that an outline of the balloon will appear sharply when imaged externally. In another preferred embodiment the balloon catheter has a drain for withdrawing liquids from the cavity, which may include channels or texture on the exterior of the balloon. Methods are described for using a switchable miniature x-ray tube, variable as to voltage and current, to achieve accuracy in an isodose profile.
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