Literature DB >> 18486392

Optimal phased-array combination for spectroscopy.

Mark Bydder1, Gavin Hamilton, Takeshi Yokoo, Claude B Sirlin.   

Abstract

A method for making weighted linear combinations of the spectra acquired by a phased-array coil is described. Unlike most previous combination methods, no special reference points in the data are chosen to represent the coil weights. Instead, all the data points are used, which results in optimal signal-to-noise ratio more reliable estimation. The method uses singular value decomposition to identify the coil weights and extract the principal component of variation in the signal. Subsequent processing of the combined signal (e.g., Fourier transform, baseline correction, phasing) may proceed as per a single coil acquisition.

Mesh：

Year:  2008        PMID： 18486392      PMCID： PMC2868913          DOI： 10.1016/j.mri.2008.01.050

Source DB:  PubMed          Journal:  Magn Reson Imaging        ISSN： 0730-725X            Impact factor:   2.546


  13 in total

1.  Adaptive reconstruction of phased array MR imagery.

Authors:  D O Walsh; A F Gmitro; M W Marcellin
Journal:  Magn Reson Med       Date:  2000-05       Impact factor: 4.668

2.  An algorithm for the optimum combination of data from arbitrary magnetic resonance phased array probes.

Authors:  T Prock; D J Collins; A S K Dzik-Jurasz; M O Leach
Journal:  Phys Med Biol       Date:  2002-01-21       Impact factor: 3.609

3.  The NMR phased array.

Authors:  P B Roemer; W A Edelstein; C E Hayes; S P Souza; O M Mueller
Journal:  Magn Reson Med       Date:  1990-11       Impact factor: 4.668

4.  An automated algorithm for combining multivoxel MRS data acquired with phased-array coils.

Authors:  Nimrod Maril; Robert E Lenkinski
Journal:  J Magn Reson Imaging       Date:  2005-03       Impact factor: 4.813

5.  Spectral analysis of multichannel MRS data.

Authors:  Niclas Sandgren; Petre Stoica; Frederick J Frigo; Yngve Selén
Journal:  J Magn Reson       Date:  2005-07       Impact factor: 2.229

6.  Noise reduction in multiple-echo data sets using singular value decomposition.

Authors:  Mark Bydder; Jiang Du
Journal:  Magn Reson Imaging       Date:  2006-05-23       Impact factor: 2.546

7.  Time-domain combination of MR spectroscopy data acquired using phased-array coils.

Authors:  Mark A Brown
Journal:  Magn Reson Med       Date:  2004-11       Impact factor: 4.668

8.  Proton spectroscopic imaging of the human brain using phased array detectors.

Authors:  L L Wald; S E Moyher; M R Day; S J Nelson; D B Vigneron
Journal:  Magn Reson Med       Date:  1995-09       Impact factor: 4.668

9.  Improved method for accurate and efficient quantification of MRS data with use of prior knowledge

Authors: 
Journal:  J Magn Reson       Date:  1997-11       Impact factor: 2.229

10.  An NMR phased array for human cardiac 31P spectroscopy.

Authors:  C J Hardy; P A Bottomley; K W Rohling; P B Roemer
Journal:  Magn Reson Med       Date:  1992-11       Impact factor: 4.668
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  41 in total

1.  In vivo characterization of the liver fat ¹H MR spectrum.

Authors:  Gavin Hamilton; Takeshi Yokoo; Mark Bydder; Irene Cruite; Michael E Schroeder; Claude B Sirlin; Michael S Middleton
Journal:  NMR Biomed       Date:  2010-12-12       Impact factor: 4.044

Review 2.  Quantitative proton MR techniques for measuring fat.

Authors:  H H Hu; H E Kan
Journal:  NMR Biomed       Date:  2013-10-03       Impact factor: 4.044

3.  Measurement of spleen fat on MRI-proton density fat fraction arises from reconstruction of noise.

Authors:  Cheng William Hong; Gavin Hamilton; Catherine Hooker; Charlie C Park; Calvin Andrew Tran; Walter C Henderson; Jonathan C Hooker; Soudabeh Fazeli Dehkordy; Jeffrey B Schwimmer; Scott B Reeder; Claude B Sirlin
Journal:  Abdom Radiol (NY)       Date:  2019-10

4.  Sensitivity of chemical shift-encoded fat quantification to calibration of fat MR spectrum.

Authors:  Xiaoke Wang; Diego Hernando; Scott B Reeder
Journal:  Magn Reson Med       Date:  2015-04-04       Impact factor: 4.668

5.  Accuracy of multiecho magnitude-based MRI (M-MRI) for estimation of hepatic proton density fat fraction (PDFF) in children.

Authors:  Kevin A Zand; Amol Shah; Elhamy Heba; Tanya Wolfson; Gavin Hamilton; Jessica Lam; Joshua Chen; Jonathan C Hooker; Anthony C Gamst; Michael S Middleton; Jeffrey B Schwimmer; Claude B Sirlin
Journal:  J Magn Reson Imaging       Date:  2015-04-03       Impact factor: 4.813

6.  Quantifying Abdominal Adipose Tissue and Thigh Muscle Volume and Hepatic Proton Density Fat Fraction: Repeatability and Accuracy of an MR Imaging-based, Semiautomated Analysis Method.

Authors:  Michael S Middleton; William Haufe; Jonathan Hooker; Magnus Borga; Olof Dahlqvist Leinhard; Thobias Romu; Patrik Tunón; Gavin Hamilton; Tanya Wolfson; Anthony Gamst; Rohit Loomba; Claude B Sirlin
Journal:  Radiology       Date:  2017-03-09       Impact factor: 11.105

7.  In vivo triglyceride composition of abdominal adipose tissue measured by 1 H MRS at 3T.

Authors:  Gavin Hamilton; Alexandra N Schlein; Michael S Middleton; Catherine A Hooker; Tanya Wolfson; Anthony C Gamst; Rohit Loomba; Claude B Sirlin
Journal:  J Magn Reson Imaging       Date:  2016-08-29       Impact factor: 4.813

8.  Removal of nuisance signals from limited and sparse 1H MRSI data using a union-of-subspaces model.

Authors:  Chao Ma; Fan Lam; Curtis L Johnson; Zhi-Pei Liang
Journal:  Magn Reson Med       Date:  2015-03-11       Impact factor: 4.668

9.  MRI proton density fat fraction is robust across the biologically plausible range of triglyceride spectra in adults with nonalcoholic steatohepatitis.

Authors:  Cheng William Hong; Adrija Mamidipalli; Jonathan C Hooker; Gavin Hamilton; Tanya Wolfson; Dennis H Chen; Soudabeh Fazeli Dehkordy; Michael S Middleton; Scott B Reeder; Rohit Loomba; Claude B Sirlin
Journal:  J Magn Reson Imaging       Date:  2017-08-29       Impact factor: 4.813

10.  Effect of flip angle on the accuracy and repeatability of hepatic proton density fat fraction estimation by complex data-based, T1-independent, T2*-corrected, spectrum-modeled MRI.

Authors:  Benjamin L Johnson; Michael E Schroeder; Tanya Wolfson; Anthony C Gamst; Gavin Hamilton; Masoud Shiehmorteza; Rohit Loomba; Jeffrey B Schwimmer; Scott Reeder; Michael S Middleton; Claude B Sirlin
Journal:  J Magn Reson Imaging       Date:  2013-04-17       Impact factor: 4.813
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