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Title: 3D and 4D magnetic susceptibility tomography based on complex MR images

Abstract

Magnetic susceptibility is the physical property for T2*-weighted magnetic resonance imaging (T2*MRI). The invention relates to methods for reconstructing an internal distribution (3D map) of magnetic susceptibility values, .chi. (x,y,z), of an object, from 3D T2*MRI phase images, by using Computed Inverse Magnetic Resonance Imaging (CIMRI) tomography. The CIMRI technique solves the inverse problem of the 3D convolution by executing a 3D Total Variation (TV) regularized iterative convolution scheme, using a split Bregman iteration algorithm. The reconstruction of .chi. (x,y,z) can be designed for low-pass, band-pass, and high-pass features by using a convolution kernel that is modified from the standard dipole kernel. Multiple reconstructions can be implemented in parallel, and averaging the reconstructions can suppress noise. 4D dynamic magnetic susceptibility tomography can be implemented by reconstructing a 3D susceptibility volume from a 3D phase volume by performing 3D CIMRI magnetic susceptibility tomography at each snapshot time.

Inventors:
;
Issue Date:
Research Org.:
STC.UNM, Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1163670
Patent Number(s):
8,886,283
Application Number:
13/526,210
Assignee:
STC.UNM (Albuquerque, NM)
DOE Contract Number:  
FG02-08ER64581
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Jun 18
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Chen, Zikuan, and Calhoun, Vince D. 3D and 4D magnetic susceptibility tomography based on complex MR images. United States: N. p., 2014. Web.
Chen, Zikuan, & Calhoun, Vince D. 3D and 4D magnetic susceptibility tomography based on complex MR images. United States.
Chen, Zikuan, and Calhoun, Vince D. Tue . "3D and 4D magnetic susceptibility tomography based on complex MR images". United States. https://www.osti.gov/servlets/purl/1163670.
@article{osti_1163670,
title = {3D and 4D magnetic susceptibility tomography based on complex MR images},
author = {Chen, Zikuan and Calhoun, Vince D},
abstractNote = {Magnetic susceptibility is the physical property for T2*-weighted magnetic resonance imaging (T2*MRI). The invention relates to methods for reconstructing an internal distribution (3D map) of magnetic susceptibility values, .chi. (x,y,z), of an object, from 3D T2*MRI phase images, by using Computed Inverse Magnetic Resonance Imaging (CIMRI) tomography. The CIMRI technique solves the inverse problem of the 3D convolution by executing a 3D Total Variation (TV) regularized iterative convolution scheme, using a split Bregman iteration algorithm. The reconstruction of .chi. (x,y,z) can be designed for low-pass, band-pass, and high-pass features by using a convolution kernel that is modified from the standard dipole kernel. Multiple reconstructions can be implemented in parallel, and averaging the reconstructions can suppress noise. 4D dynamic magnetic susceptibility tomography can be implemented by reconstructing a 3D susceptibility volume from a 3D phase volume by performing 3D CIMRI magnetic susceptibility tomography at each snapshot time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {11}
}

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