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

Patent ·
OSTI ID:1163670

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.

Research Organization:
STC.UNM, Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-08ER64581
Assignee:
STC.UNM (Albuquerque, NM)
Patent Number(s):
8,886,283
Application Number:
13/526,210
OSTI ID:
1163670
Resource Relation:
Patent File Date: 2012 Jun 18
Country of Publication:
United States
Language:
English

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Cited By (8)

System, process and computer-accessible medium for providing quantitative susceptibility mapping patent December 2015
Magnetic resonance system and method employing a digital squid patent April 2017
Method for accelerating magnetic resonance imaging using varying k-space sampling density and phase-constrained reconstruction patent October 2016
Image processing method and image processing apparatus patent August 2015
Systems and methods for fast reconstruction for quantitative susceptibility mapping using magnetic resonance imaging patent January 2017
Modulation guided phase unwrapping patent January 2017
Method and apparatus for reducing artifacts in computed tomography (CT) image reconstruction patent September 2016
System and method for object-based initialization of magnetic field inhomogeneity in magnetic resonance imaging patent April 2017

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