Analysis of residual coronary artery motion for breath hold and navigator approaches using real-time coronary MRI.
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| Title: | Analysis of residual coronary artery motion for breath hold and navigator approaches using real-time coronary MRI. |
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| Authors: | Fischer, R. W.1,2, Botnar, R. M.1,3, Nehrke, K.4, Boesiger, P.2, Manning, W. J.1, Peters, D. C.1 |
| Source: | Magnetic Resonance in Medicine. Mar2006, Vol. 55 Issue 3, p612-618. 7p. |
| Abstract: | Coronary artery MRI methods utilize breath holds, or diaphragmatic navigators, to compensate for respiratory motion. To increase image quality and navigator (NAV) gating efficiency, slice tracking is used, with more sophisticated affine motion models recently introduced. This study assesses the extent of remaining coronary artery motion in free breathing NAV and single and multi breath hold coronary artery MRI. Additionally, the effect of the NAV gating window size was examined. To visualize and measure the respiratory induced motion, an image containing a coronary artery cross section was acquired at each heartbeat. The amount of residual coronary artery displacement was used as a direct measure for the performance of the respiratory motion correction method. Free breathing studies with motion compensation (slice tracking with 5 mm gating window) had a similar amount of residual motion (0.76 ± 0.17 mm) as a single breath hold (0.52 ± 0.20 mm) and were superior to multiple breath holds (1.22 ± 0.60 mm). Affine NAV methods allowed for larger gating windows (∼10 mm windows) with similar residual motion (0.74 ± 0.17 mm). In this healthy adult cohort ( N = 10), free-breathing NAV methods offered respiratory motion suppression similar to a single breath hold. Magn Reson Med, 2006. © 2006 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: 63346573 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/mrm.20809 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 612 Titles: – TitleFull: Analysis of residual coronary artery motion for breath hold and navigator approaches using real-time coronary MRI. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fischer, R. W. – PersonEntity: Name: NameFull: Botnar, R. M. – PersonEntity: Name: NameFull: Nehrke, K. – PersonEntity: Name: NameFull: Boesiger, P. – PersonEntity: Name: NameFull: Manning, W. J. – PersonEntity: Name: NameFull: Peters, D. C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2006 Type: published Y: 2006 Identifiers: – Type: issn-print Value: 07403194 Numbering: – Type: volume Value: 55 – Type: issue Value: 3 Titles: – TitleFull: Magnetic Resonance in Medicine Type: main |
| ResultId | 1 |
