Joint estimation of water/fat images and field inhomogeneity map.
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| Title: | Joint estimation of water/fat images and field inhomogeneity map. |
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| Authors: | Hernando, D.1,2, Haldar, J. P.1,2, Sutton, B. P.2,3, Ma, J.4, Kellman, P.5, Liang, Z.-P.1,2 |
| Source: | Magnetic Resonance in Medicine. Mar2008, Vol. 59 Issue 3, p571-580. 10p. |
| Abstract: | Water/fat separation in the presence of B0 field inhomogeneity is a problem of considerable practical importance in MRI. This article describes two complementary methods for estimating the water/fat images and the field inhomogeneity map from Dixon-type acquisitions. One is based on variable projection (VARPRO) and the other on linear prediction (LP). The VARPRO method is very robust and can be used in low signal-to-noise ratio conditions because of its ability to achieve the maximum-likelihood solution. The LP method is computationally more efficient, and is shown to perform well under moderate levels of noise and field inhomogeneity. These methods have been extended to handle multicoil acquisitions by jointly solving the estimation problem for all the coils. Both methods are analyzed and compared and results from several experiments are included to demonstrate their performance. Magn Reson Med 59:571-580, 2008. © 2008 Wiley-Liss, Inc. [ABSTRACT FROM AUTHOR] |
| Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 63336581 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Joint estimation of water/fat images and field inhomogeneity map. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hernando%2C+D%2E%22">Hernando, D.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Haldar%2C+J%2E+P%2E%22">Haldar, J. P.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sutton%2C+B%2E+P%2E%22">Sutton, B. P.</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ma%2C+J%2E%22">Ma, J.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Kellman%2C+P%2E%22">Kellman, P.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Liang%2C+Z%2E-P%2E%22">Liang, Z.-P.</searchLink><relatesTo>1,2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Mar2008, Vol. 59 Issue 3, p571-580. 10p. – Name: Abstract Label: Abstract Group: Ab Data: Water/fat separation in the presence of B0 field inhomogeneity is a problem of considerable practical importance in MRI. This article describes two complementary methods for estimating the water/fat images and the field inhomogeneity map from Dixon-type acquisitions. One is based on variable projection (VARPRO) and the other on linear prediction (LP). The VARPRO method is very robust and can be used in low signal-to-noise ratio conditions because of its ability to achieve the maximum-likelihood solution. The LP method is computationally more efficient, and is shown to perform well under moderate levels of noise and field inhomogeneity. These methods have been extended to handle multicoil acquisitions by jointly solving the estimation problem for all the coils. Both methods are analyzed and compared and results from several experiments are included to demonstrate their performance. Magn Reson Med 59:571-580, 2008. © 2008 Wiley-Liss, Inc. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/mrm.21522 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 571 Titles: – TitleFull: Joint estimation of water/fat images and field inhomogeneity map. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hernando, D. – PersonEntity: Name: NameFull: Haldar, J. P. – PersonEntity: Name: NameFull: Sutton, B. P. – PersonEntity: Name: NameFull: Ma, J. – PersonEntity: Name: NameFull: Kellman, P. – PersonEntity: Name: NameFull: Liang, Z.-P. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 07403194 Numbering: – Type: volume Value: 59 – Type: issue Value: 3 Titles: – TitleFull: Magnetic Resonance in Medicine Type: main |
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