Title:
PROPORTIONAL ATTENUATION OF RADIATION IN BRACHYTHERAPY TREATMENT
Document Type and Number:
WIPO Patent Application WO/2009/108380
Kind Code:
A3
Abstract:
Attenuating masks for selective attenuation of radiation, particularly from an x-ray source in brachytherapy, employ materials having atomic number in a specific range, so as to attenuate radiation dose intensity generally proportionally through a range of distance from the source. Some preferred attenuation materials are silver and molybdenum. A set of small masks can be provided for a particular design of catheter that holds a radiation source, each mask having a size and shape to define a different solid angle of masking, so that in a brachytherapy procedure, sensitive tissue such as bone or skin can be protected by proper selection of and positioning of the attenuating mask, to reduce the dose intensity to that tissue.
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Inventors:
AXELROD STEVE (US)
BURNSIDE ROBERT R (US)
LOVOI PAUL A (US)
BURNSIDE ROBERT R (US)
LOVOI PAUL A (US)
Application Number:
PCT/US2009/001302
Publication Date:
March 24, 2016
Filing Date:
February 26, 2009
Export Citation:
Assignee:
XOFT INC (US)
International Classes:
A61N5/00
Foreign References:
| US20070191668A1 | 2007-08-16 | |||
| US20060173235A1 | 2006-08-03 | |||
| US20080009659A1 | 2008-01-10 | |||
| US20030149327A1 | 2003-08-07 | |||
| US20080039715A1 | 2008-02-14 |
Attorney, Agent or Firm:
FREIBURGER, Thomas, M. (Tiburon, CA, US)
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