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Title: Adjustable permanent magnet assembly for NMR and MRI

Patent ·
OSTI ID:1107631
; ; ;

System and methods for designing and using single-sided magnet assemblies for magnetic resonance imaging (MRI) are disclosed. The single-sided magnet assemblies can include an array of permanent magnets disposed at selected positions. At least one of the permanent magnets can be configured to rotate about an axis of rotation in the range of at least +/-10 degrees and can include a magnetization having a vector component perpendicular to the axis of rotation. The single-sided magnet assemblies can further include a magnet frame that is configured to hold the permanent magnets in place while allowing the at least one of the permanent magnets to rotate about the axis of rotation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
8,570,042
Application Number:
12/675,604
OSTI ID:
1107631
Country of Publication:
United States
Language:
English

References (7)

Nuclear magnetic resonance apparatus and methods of use and facilities for incorporating the same patent September 2003
System and method for single-sided magnetic resonance imaging patent December 2005
Rotating and pivoting magnet for magnetic navigation patent June 2011
Magnet assembly with variable field directions and methods of magnetically navigating medical objects patent March 2003
Least Squares Magnetic-Field Optimization for Portable Nuclear Magnetic Resonance Magnet Design journal December 2008
Asymmetric arrangement of permanent-magnetic elements for a magnetic resonance apparatus patent March 2003
Absolute property measurements using electromagnetic sensors patent-application June 2005

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