Title: System and method for magnetic current density imaging at ultra low magnetic fields

Abstract

Preferred systems can include an electrical impedance tomography apparatus electrically connectable to an object; an ultra low field magnetic resonance imaging apparatus including a plurality of field directions and disposable about the object; a controller connected to the ultra low field magnetic resonance imaging apparatus and configured to implement a sequencing of one or more ultra low magnetic fields substantially along one or more of the plurality of field directions; and a display connected to the controller, and wherein the controller is further configured to reconstruct a displayable image of an electrical current density in the object. Preferred methods, apparatuses, and computer program products are also disclosed.

Inventors:

Espy, Michelle A.; George, John Stevens; Kraus, Robert Henry; Magnelind, Per; Matlashov, Andrei Nikolaevich; Tucker, Don; Turovets, Sergei; Volegov, Petr Lvovich

Issue Date:

Tue Feb 09 00:00:00 EST 2016

Research Org.:

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1241354

Patent Number(s):

9254097

Application Number:

13/622,940

Assignee:

Los Alamos National Security, LLC (Los Alamos, NM)

Patent Classifications (CPCs):

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS

A61B5/0035 - {adapted for acquisition of images from more than one imaging mode, e.g. combining MRI and optical tomography}
A61B5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields
A61B5/0536 - {Impedance imaging, e.g. by tomography}
A61B5/055 - involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R33/32 - Excitation or detection systems, e.g. using radio frequency signals
G01R33/326 - {involving a SQUID}
G01R33/445 - {MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field imaging}
G01R33/4808 - {Multimodal MR, e.g. MR combined with positron emission tomography [PET], MR combined with ultrasound or MR combined with computed tomography [CT]}
G01R33/54 - Signal processing systems, e.g. using pulse sequences {, Generation or control of pulse sequences

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DOE Contract Number:  

AC52-06NA25396

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Sep 19

Country of Publication:

United States

Language:

English

Subject:

62 RADIOLOGY AND NUCLEAR MEDICINE; 60 APPLIED LIFE SCIENCES