Title:
REDUCED DIVERGENCE ELECTROMAGNETIC FIELD CONFIGURATION
Document Type and Number:
WIPO Patent Application WO2004104602
Kind Code:
A3
Abstract:
A photon beam dose enhancement is controlled by configuring at least two magnets in a staggered opposing coil configuration, such that the first central field vector of the first magnet is more anti-parallel than parallel to the second central field vector of the second magnet. In one form, the first central field vector of the first magnet is rotated between ± 90 to 180 to the second central field vector of the second magnet. Typically, the first central field vector is noncoaxial with the second central field vector. The resulting magnetic field configuration has a larger portion of higher magnitude magnetic field that can reach deeper into a target body and provides additional space within the region of higher magnitude that can accommodate larger portions of a body.
Inventors:
REIFFEL LEONARD (US)
Application Number:
PCT/US2004/016028
Publication Date:
September 09, 2005
Filing Date:
May 20, 2004
Export Citation:
Assignee:
REIFFEL LEONARD (US)
International Classes:
A61N2/00; A61N2/02; A61N5/10; G21K1/093; (IPC1-7): A61N5/10; G21K5/00
Foreign References:
| US5326970A | 1994-07-05 | |||
| US5267294A | 1993-11-30 | |||
| US5974112A | 1999-10-26 | |||
| US5812632A | 1998-09-22 | |||
| US4599724A | 1986-07-08 | |||
| US4229657A | 1980-10-21 |
Other References:
See also references of EP 1628710A4
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