skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Passively shimmed principal detector elements for toroid cavity detector NMR probes

Patent ·
OSTI ID:1531481
;

A novel NMR principal detector element of the present invention comprises a NMR-active inductor in a radio frequency (RF) resonance circuit, and mitigates the distortions in a static magnetic field caused by the introduction of a toroid cavity NMR detector. The RF resonance circuit includes a novel principal detector element, capacitor elements, and a sample chamber (the cavity). The novel principal detector element defines the NMR active portion of the inductance of the electronic resonance circuit. In one embodiment of the invention, the novel principal detector element includes two hemispheres connected by a central rod. The central rod can be of any length and diameter, and the hemispheres can be of any diameter. A typical embodiment of the invention would include a rod that is 2 cm long having a diameter of 1 mm, and hemispheres having a diameter of 5 mm.

Research Organization:
The Univ. of Chicago, Chicago, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-31-109-ENG-38
Assignee:
The University of Chicago (Chicago, IL)
Patent Number(s):
6,788,064
Application Number:
10/386,847
OSTI ID:
1531481
Resource Relation:
Patent File Date: 2003-03-12
Country of Publication:
United States
Language:
English

References (8)

Method and Apparatus for Performing Neuroimaging patent-application September 2003
Passively shimmed principal detector elements for toroid cavity detector NMR probes patent-application September 2003
Device and method for the endovascular treatment of aneurysms patent October 2002
Flat metal conductor principal detector element for NMR analysis of a sample patent October 2002
Method and apparatus for probe localization in brain matter patent May 2003
Near-electrode imager patent April 2000
Nuclear magnetic resonance detector used for reducing probe ringing patent February 2001
Nuclear resonance tomography with a toroid cavity detector patent November 1996

Cited By (3)

Compact orthogonal NMR field sensor patent February 2009
NMR probehead with a plurality of resonator systems for simultaneous measurement of a plurality of samples in a coupled mode patent January 2010
Toroidal probe unit for nuclear magnetic resonance patent March 2008

Similar Records

Related Subjects