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Algebraic Decomposition of Fat and Water in MRI

M. Jacob, B.P. Sutton
2009 IEEE Transactions on Medical Imaging  
The decomposition of MRI data to generate water and fat images has several applications in medical imaging, including fat suppression and quantification of visceral fat.  ...  We introduce a novel algorithm to overcome some of the problems associated with current analytical and iterative decomposition schemes.  ...  ACKNOWLEDGMENT This work was supported by the Beckman Foundation and the startup funds at the University of Rochester. The authors would like to thank Prof.  ... 
doi:10.1109/tmi.2008.927344 pmid:19188106 fatcat:yg2awad3dzckjotkypevhq5524

A Fast Iterated Conditional Modes Algorithm for Water–Fat Decomposition in MRI

Fangping Huang, S. Narayan, D. Wilson, D. Johnson, Guo-Qiang Zhang
2011 IEEE Transactions on Medical Imaging  
Decomposition of water and fat in Magnetic Resonance Imaging (MRI) is important for biomedical research and clinical applications.  ...  In this paper, we propose a two-phased approach for the three-point water-fat decomposition problem.  ...  The contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIBIB, NIDDK, NIGMS, NCRR, or NIH.  ... 
doi:10.1109/tmi.2011.2125980 pmid:21402510 pmcid:PMC3651048 fatcat:p3ffmpzkt5gpdizzay75car2n4

ISMRM workshop on fat-water separation: Insights, applications and progress in MRI

Houchun Harry Hu, Peter Börnert, Diego Hernando, Peter Kellman, Jingfei Ma, Scott Reeder, Claude Sirlin
2012 Magnetic Resonance in Medicine  
Keywords water-fat imaging; fat-water separation; Dixon; chemical-shift; fat quantification Research in water-fat MRI has increased significantly in recent years with the development of robust qualitative  ...  The scientific program included an historical perspective and a discussion of the clinical relevance of water-fat MRI, a technical description of multiecho pulse sequences, a review of data acquisition  ...  The authors thank ISMRM's corporate members, and specifically Joanna Jobson (GE Healthcare), Gordon Herron (Philips Healthcare), and Stuart Clarkson (Toshiba America Medical Systems), for their sponsorship  ... 
doi:10.1002/mrm.24369 pmid:22693111 pmcid:PMC3575097 fatcat:4636f5g6cbgx7kuhjy4uxj24de

Assessment of abdominal adipose tissue and organ fat content by magnetic resonance imaging

H. H. Hu, K. S. Nayak, M. I. Goran
2011 Obesity Reviews  
This article is aimed to provide the reader with an overview of current and state-of-the-art techniques in MRI and associated image analysis methods for fat quantification.  ...  Furthermore, the advantages and disadvantages of each MRI approach with respect to imaging parameters, spatial resolution, subject motion, scan time, and appropriate fat quantitative endpoints are also  ...  Acknowledgments The authors gratefully thank Huanzhou Yu and Ann Shimakawa from GE Healthcare for providing MRI technical support, and acknowledge grant support from the National Institutes of Health (  ... 
doi:10.1111/j.1467-789x.2010.00824.x pmid:21348916 pmcid:PMC3079791 fatcat:cbwwg7rje5fxtojqqsjepre6ha

Three-material decomposition with dual-layer spectral CT compared to MRI for the detection of bone marrow edema in patients with acute vertebral fractures

Benedikt J. Schwaiger, Alexandra S. Gersing, Johannes Hammel, Kai Mei, Felix K. Kopp, Jan S. Kirschke, Ernst J. Rummeny, Klaus Wörtler, Thomas Baum, Peter B. Noël
2018 Skeletal Radiology  
Spectral data were decomposed into hydroxyapatite, edema-equivalent, and fat-equivalent density maps using an in-house-developed algorithm.  ...  Materials and methods Acute (n = 41) and chronic (n = 18) osteoporotic thoracolumbar vertebral fractures as diagnosed by MRI (hyperintense signal in STIR sequences) in 27 subjects (72 ± 11 years; 17 women  ...  Kopp developed the software for the decomposition tool and performed data handling and image reconstruction. Jan S.  ... 
doi:10.1007/s00256-018-2981-x pmid:29802531 fatcat:b5fyudot4zbehelx4ozenldfji

Current status of imaging in nonalcoholic fatty liver disease

Qian Li, Manish Dhyani, Joseph R Grajo, Claude Sirlin, Anthony E Samir
2018 World Journal of Hepatology  
Effective risk stratification and management of NAFLD requires evaluation of hepatic parenchymal fat, fibrosis, and inflammation.  ...  Most cases of simple steatosis are non-progressive, whereas nonalcoholic steatohepatitis may result in chronic liver injury and progressive fibrosis in a significant minority.  ...  in the liver (fat and water) [79] .  ... 
doi:10.4254/wjh.v10.i8.530 pmid:30190781 pmcid:PMC6120999 fatcat:caf2n7mjcbfxbfbkaxsjvw4y6u

Quantification of Absolute Fat Mass by Magnetic Resonance Imaging: a Validation Study against Chemical Analysis

Houchun H Hu, Yan Li, Tim R Nagy, Michael I Goran, Krishna S Nayak
2011 International Journal of Body Composition Research  
CONCLUSION: Chemical-shift MRI and PDFF provides an accurate means of determining absolute fat mass in organs, muscles, and adipose and lean tissues.  ...  METHODS: Chemical-shift imaging can accurately decompose water and fat signals from the acquired MRI data.  ...  Authors KN and HH thank Huanzhou Yu, Ann Shimakawa, and Jean Brittain from GE Healthcare for technical support of the IDEAL MRI method, as well as Erlinda Kirkman from the University of Southern California's  ... 
pmid:23204926 pmcid:PMC3509746 fatcat:jfu7zuhqgfenlcaed7mo4ag6n4

Frequency response of multipoint chemical shift-based spectral decomposition

Ethan K. Brodsky, Venkata V. Chebrolu, Walter F. Block, Scott B. Reeder
2010 Journal of Magnetic Resonance Imaging  
In this work, we describe a technique for finding the magnitude and phase of chemical shift decomposition for input signals over a range of frequencies using numerical and experimental modeling and examine  ...  In general, after a non-linear process of estimating and demodulating the field map, these decomposition methods are linear transforms from the echo-time domain to the chemical-shift-frequency domain,  ...  Acknowledgments This work was supported in part by the University of Wisconsin Institute for Clinical and Translational Research, funded through NIH Clinical and Translational Science Award 1UL1RR025011  ... 
doi:10.1002/jmri.22308 pmid:20882625 pmcid:PMC2949297 fatcat:3ecmrm3oebc4znq53xgbqhyyey

Assessment of Abdominal Adiposity and Organ Fat with Magnetic Resonance Imaging [chapter]

Houchun H., Michael I., Krishna S.
2011 Role of the Adipocyte in Development of Type 2 Diabetes  
This chapter provides the reader with an overview of MRI techniques for measuring abdominal adiposity and organ fat.  ...  Fat accumulation in the liver, pancreas, and skeletal muscles are indicators of diabetes, the metabolic syndrome, and obesity.  ...  Smith, Jr., Ph.D, and Timothy R. Nagy, Ph.D., from the University of Alabama at Birmingham for recognizing the potential of IDEAL with brown adipose tissue. References  ... 
doi:10.5772/20602 fatcat:wmb5ojb52rapzh4tqgiyrgdfbm

Robust multipoint water-fat separation using fat likelihood analysis

Huanzhou Yu, Scott B. Reeder, Ann Shimakawa, Charles A. McKenzie, Jean H. Brittain
2011 Magnetic Resonance in Medicine  
Fat suppression is an essential part of routine MRI scanning. Multiecho chemical-shift based water-fat separation methods estimate and correct for Bo field inhomogeneity.  ...  Keywords water-fat separation; fat spectral peaks; fitting residual; multiecho; water-fat swap Robust fat suppression is critical for many clinical applications of MRI.  ...  All fat likelihood maps are in excellent agreement with the water-fat distribution. Performing the FLAME algorithm with any of these spectra leads to successful decomposition of water and fat.  ... 
doi:10.1002/mrm.23087 pmid:21842498 pmcid:PMC4785024 fatcat:wxvf4mrwwvdkva3l3fsdplqo7m

Improved fat-water reconstruction algorithm with graphics hardware acceleration

David H. Johnson, Sreenath Narayan, Chris A. Flask, David L. Wilson
2010 Journal of Magnetic Resonance Imaging  
Purpose-To develop a fast and robust Iterative Decomposition of water and fat with Echo Asymmetry and Least-squares (IDEAL) reconstruction algorithm utilizing graphics processor unit (GPU) computation.  ...  The algorithm was made more robust to fat-water ambiguities using a modified planar extrapolation (MPE) of ψ algorithm.  ...  Institutes of Health.  ... 
doi:10.1002/jmri.22051 pmid:20099358 pmcid:PMC2866013 fatcat:imd6mudqz5evhixx3dczfcm23e

Diffusional kurtosis imaging using a fast heuristic constrained linear least squares algorithm: A plugin for OsiriX

Nuno Mesquita, Joao Santinha, Jose Fonseca
2015 2015 IEEE 4th Portuguese Meeting on Bioengineering (ENBENG)  
resonance imaging (MRI) technique that tackles the non-gaussian motion of water in biological tissues by taking into account the restrictions imposed by tissue microstructure, which are not considered  ...  Thus, as OsiriX runs under Mac OS X, the program is written in Objective-C and also makes use of Apple's Cocoa framework.  ...  The DWI's were acquired, After identifying the region corresponding to water, fat and both fat and water, regions of interest (ROIs) were drawn in those regions and, after computing the maps for both  ... 
doi:10.1109/enbeng.2015.7088874 fatcat:x5gbkhlnfrgylb4tj3iovemg4e

Compressed sensing for chemical shift-based water-fat separation

Mariya Doneva, Peter Börnert, Holger Eggers, Alfred Mertins, John Pauly, Michael Lustig
2010 Magnetic Resonance in Medicine  
In 3D MRI, reduction factors of above three can be achieved, thus fully compensating the additional time needed in three-echo water-fat imaging.  ...  Multi echo chemical shift-based water-fat separation methods allow for uniform fat suppression in the presence of main field inhomogeneities.  ...  Water-Fat Separation Methods In the case of full sampling, the water-fat decomposition problem is separable and can be solved voxel-by-voxel.  ... 
doi:10.1002/mrm.22563 pmid:20859998 fatcat:2i5mp5g7gngkvk4brbuo67obue

Impact of prior information on material decomposition in dual- and multienergy computed tomography

Liqiang Ren, Shengzhen Tao, Kishore Rajendran, Cynthia H. McCollough, Lifeng Yu
2019 Journal of Medical Imaging  
The material decomposition tasks we used in this study are to quantify water/iodine, water/iodine/gadolinium, and water/ iodine/calcium in two- and three-material decompositions, under the assumption that  ...  This study aims to evaluate the impact of the prior information on noise and quantification bias in both DECT and MECT.  ...  Bernhard Schmidt, and Dr. Steffen Kappler in Siemens Healthcare, for providing help on the DRASIM and the PCD-CT simulation tool.  ... 
doi:10.1117/1.jmi.6.1.013503 pmid:30891466 pmcid:PMC6416528 fatcat:jbvfqoi7zrdu7gddteso64oru4

Breast density quantification using magnetic resonance imaging (MRI) with bias field correction: A postmortem study

Huanjun Ding, Travis Johnson, Muqing Lin, Huy Q. Le, Justin L. Ducote, Min-Ying Su, Sabee Molloi
2013 Medical Physics (Lancaster)  
In left-right comparisons, the CLIC method significantly improved the slope and the correlation coefficient of the linear fitting for the glandular volume estimation.  ...  Conclusions: The investigated CLIC method significantly increased the precision and accuracy of breast density quantification using breast MRI images by effectively correcting the bias field.  ...  The change in sample mass was assigned to water loss, and added into the final water fraction.  ... 
doi:10.1118/1.4831967 pmid:24320536 pmcid:PMC3862600 fatcat:d7fwwybtnfajlozlwfl3xj4it4
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