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Water-Fat Imaging with Automatic Field Inhomogeneity Correction Using Joint Phase Magnitude Density Function at Low Field MRI  

Kim, Pan-Ki (Department af Electrical Engineering, Kwangwaan University)
Ahn, Chang-Beom (Department af Electrical Engineering, Kwangwaan University)
Publication Information
Investigative Magnetic Resonance Imaging / v.15, no.1, 2011 , pp. 57-66 More about this Journal
Abstract
Purpose : A new inhomogeneity correction method based on two-point Dixon sequence is proposed to obtain water and fat images at 0.35T, low field magnetic resonance imaging (MRI) system. Materials and Methods : Joint phase-magnitude density function (JPMF) is obtained from the in-phase and out-of-phase images by the two-point Dixon method. The range of the water signal is adjusted from the JPMF, and 3D inhomogeneity map is obtained from the phase of corresponding water volume. The 3D inhomogeneity map is used to correct the inhomogeneity field iteratively. Results : The proposed water-fat imaging method was successfully applied to various organs. The proposed 3D inhomogeneity correction algorithm provides good performances in overall multi-slice images. Conclusion : The proposed water-fat separation method using JPMF is robust to field inhomogeneity. Three dimensional inhomogeneity map and the iterative inhomogeneity correction algorithm improve water and fat imaging substantially.
Keywords
Water-fat imaging; Inhomogeneity correction; Low-field MRI; Joint phase-magnitude density function;
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1 Irarrazabal P, Meyer CH, Nishimura DG, Macovski A. Inhomogeneity correction using an estimated linear field map. Magn Reson Med 1996;35:278-282   DOI   ScienceOn
2 Bernstein MA, King KF, Zhou XJ. Handbook of MRI Pulse Sequence. New York: Elsevier; 2004
3 Reeder SB, Wen Z, Yu H, et al. Multicoil Dixon chemical species separation with an iterative least-squares estimation method. Magn Reson Med 2004;51:35-45   DOI   ScienceOn
4 Kellman P, Hernando D, Shah S, et al. Multiecho dixon fat and water separation method for detecting fibrofatty infiltration in the myocardium. Magn Reson Med 2009;61:215-221   DOI   ScienceOn
5 Hu HH, Kim HW, Nayak KS, et al. Comparison of fat-water MRI and single-voxel MRS in the assessment of hepatic and pancreatic fat fractions in humans. Obesity 2010;18:841-847.   DOI   ScienceOn
6 Keller PJ, Hunter WW Jr, Schmalbrock P. Multisection fat-water imaging with ehemical shift selection presaturation. Radiology 1987; 164:539-541   DOI
7 Bydder GM, Young IR. MR imaging: clinical use of the inversion-recovery sequence. J Comput Assist Tomogr 1985;9:659-675.   DOI   ScienceOn
8 Dixon WT. Simple proton spectroscopic imaging. Radiology 1984;153:189-194
9 Glover GH, Schneider E. Three-point Dixon Technique for true water/fat decomposition with B0 inhomogeneity correction. Magn Reson Med 1991;18:371-383   DOI   ScienceOn
10 Glover GH. Multipoint dixon technique for true water and fat proton and susceptibility imaging. Magn Reson Med 1991;5:512-530
11 Skinner TE, Glover GH. An extended two-point Dixon algorithm for calculating separate water, fat, and B0 images. Magn Reson Med 1997;37:628-630   DOI   ScienceOn
12 Coombs BD, Szumowski J, Coshow W. Two-points Dixon technique for water-fat signal decomposition with B0 inhomogeneity correction. Magn Reson Med 1997;38:884-889.   DOI   ScienceOn
13 Ghiglia DC, Pritt MD. Two-dimensional phase unwrapping: theory, algorithm, and software. New York: John Wiley & Sons; 1998
14 Ma J. Breath-hold water and fat imaging using a dual-echo two-point Dixon technique with an efficient and robust phase-correction algorithm. Magn Reson Med 2005;52:425-419
15 Schmidt MA, Fraser KM. Two-point Dixon fat-water separation: improving reliability and accuracy in phase correction algorithm. JMRI 2008;27: 1122-1129.   DOI   ScienceOn
16 O' Regan DP, Callaghan MF, Wylezinska-Arridge M, et al. Liver fat content and $T2^{ast}$: simultaneous measurement by using breath-hold multiecho MR imaging at 3T-feasibility. Radiology 2008;247:550-557   DOI   ScienceOn
17 Emmanuelle M, Javier B, Glyn J, Jean R, Xavier M, Anne C. Fat suppression in MR imaging: teehniques and pitfalls. Radiographics 1999;19:373-382   DOI
18 Hussain HK, Chenevert TL, Londy FJ, et al. Hepatic fat fraction: MR imaging for quantitative measurement and display - early experience. Radiology 2005;236:1048-1055
19 Guiu B, Petit JM, Loffroy R, et al. Quantification of liver fat content: comparison of triple-echo chemical shift gardient-echo imaging and in vivo proton MR spectroscopy. Radiology 2009;250:95-102   DOI   ScienceOn
20 Pruessmann KP, et al. SENSE: sensitivity encoding for fast MRI. Magn Reson Med 1999;42:952-962   DOI   ScienceOn
21 Ahn CB, Jo JM, Cho ZH. Magnetic field homogeneity correction algorithm using pseudoinversion formula for NMR imaging. Rev Sc. Instrum 1986;57(4):683-688   DOI