Increasing the signal-to-noise ratio in DENSE MRI by combining displacement-encoded echoes.
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| Title: | Increasing the signal-to-noise ratio in DENSE MRI by combining displacement-encoded echoes. |
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| Authors: | Kim, Daniel1, Epstein, Frederick H.2, Gilson, Wesley D.2, Axel, Leon1 |
| Source: | Magnetic Resonance in Medicine. Jul2004, Vol. 52 Issue 1, p188-192. 5p. |
| Abstract: | A new technique was developed to increase the signal-to-noise ratio (SNR) in displacement encoding with stimulated echoes (DENSE) MRI. This signal-averaged DENSE (sav-DENSE) technique is based on the SNR advantage of extracting a pair of DENSE images with uncorrelated noise from the complex complementary spatial modulation of the magnetization image, and combining them during image reconstruction. Eleven healthy volunteers were imaged at three short-axis locations with the use of sav-DENSE, cine DENSE, and myocardial tagging pulse sequences. In this study, sav-DENSE increased the SNR by 15-34% as compared to cine DENSE. Circumferential strain values measured by sav-DENSE and myocardial tagging were strongly correlated (slope = 0.95, intercept = -0.02, R = 0.92) and within the 95% limits of agreement. The breath-hold sav-DENSE technique yielded relatively accurate and precise quantification of 2D intramyocardial function, with a 40.2-ms temporal resolution and a 3.5 × 3.5 mm2 spatial resolution. Magn Reson Med 52:188-192, 2004. © 2004 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: 63334496 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Increasing the signal-to-noise ratio in DENSE MRI by combining displacement-encoded echoes. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kim%2C+Daniel%22">Kim, Daniel</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Epstein%2C+Frederick+H%2E%22">Epstein, Frederick H.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Gilson%2C+Wesley+D%2E%22">Gilson, Wesley D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Axel%2C+Leon%22">Axel, Leon</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Jul2004, Vol. 52 Issue 1, p188-192. 5p. – Name: Abstract Label: Abstract Group: Ab Data: A new technique was developed to increase the signal-to-noise ratio (SNR) in displacement encoding with stimulated echoes (DENSE) MRI. This signal-averaged DENSE (sav-DENSE) technique is based on the SNR advantage of extracting a pair of DENSE images with uncorrelated noise from the complex complementary spatial modulation of the magnetization image, and combining them during image reconstruction. Eleven healthy volunteers were imaged at three short-axis locations with the use of sav-DENSE, cine DENSE, and myocardial tagging pulse sequences. In this study, sav-DENSE increased the SNR by 15-34% as compared to cine DENSE. Circumferential strain values measured by sav-DENSE and myocardial tagging were strongly correlated (slope = 0.95, intercept = -0.02, R = 0.92) and within the 95% limits of agreement. The breath-hold sav-DENSE technique yielded relatively accurate and precise quantification of 2D intramyocardial function, with a 40.2-ms temporal resolution and a 3.5 × 3.5 mm2 spatial resolution. Magn Reson Med 52:188-192, 2004. © 2004 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.20109 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 188 Titles: – TitleFull: Increasing the signal-to-noise ratio in DENSE MRI by combining displacement-encoded echoes. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kim, Daniel – PersonEntity: Name: NameFull: Epstein, Frederick H. – PersonEntity: Name: NameFull: Gilson, Wesley D. – PersonEntity: Name: NameFull: Axel, Leon IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2004 Type: published Y: 2004 Identifiers: – Type: issn-print Value: 07403194 Numbering: – Type: volume Value: 52 – Type: issue Value: 1 Titles: – TitleFull: Magnetic Resonance in Medicine Type: main |
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