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Article: Combo acquisitions: Balancing scan time reduction and image quality

TitleCombo acquisitions: Balancing scan time reduction and image quality
Authors
Issue Date2006
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/
Citation
Magnetic Resonance In Medicine, 2006, v. 55 n. 5, p. 1093-1105 How to Cite?
AbstractRecently a new technique for the combined acquisition of multicontrast images, termed "combo acquisition," was introduced. In combo acquisitions, the three concepts of 1) variable acquisition parameters, 2) k-space data sharing, and 3) multicontrast imaging are systematically integrated to reduce MRI scan time and improve data utilization in a clinical setting. In this study, two-contrast and three-contrast spin-echo (SE) and turbo spin-echo (TSE) combo acquisition protocols that were designed and optimized in simulation experiments were implemented on a 1.5 T clinical scanner. Phantom and human brain data from volunteers and patients were acquired. Scan time reductions of 25-52% were achieved compared to standard acquisitions, largely confirming the simulation results. We evaluated the resulting images by quantitatively analyzing the preservation of contrast and the signal-to-noise ratio (SNR). In addition, data sets for 10 clinical cases obtained with TSE combo and corresponding standard acquisitions were graded by two experienced neuroradiologists in terms of the level of artifacts and image quality for comparison. Only minor image degradation with the combo scans was observed, indicating an inherent trade-off between scan time reduction and image quality. The specific aspects of combo acquisitions with respect to motion, flow, and κ-space data weighting are discussed. © 2006 Wiley-Liss, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/155324
ISSN
2015 Impact Factor: 3.782
2015 SCImago Journal Rankings: 2.197
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMekle, Ren_US
dc.contributor.authorWu, EXen_US
dc.contributor.authorMeckel, Sen_US
dc.contributor.authorWetzel, SGen_US
dc.contributor.authorScheffler, Ken_US
dc.date.accessioned2012-08-08T08:32:54Z-
dc.date.available2012-08-08T08:32:54Z-
dc.date.issued2006en_US
dc.identifier.citationMagnetic Resonance In Medicine, 2006, v. 55 n. 5, p. 1093-1105en_US
dc.identifier.issn0740-3194en_US
dc.identifier.urihttp://hdl.handle.net/10722/155324-
dc.description.abstractRecently a new technique for the combined acquisition of multicontrast images, termed "combo acquisition," was introduced. In combo acquisitions, the three concepts of 1) variable acquisition parameters, 2) k-space data sharing, and 3) multicontrast imaging are systematically integrated to reduce MRI scan time and improve data utilization in a clinical setting. In this study, two-contrast and three-contrast spin-echo (SE) and turbo spin-echo (TSE) combo acquisition protocols that were designed and optimized in simulation experiments were implemented on a 1.5 T clinical scanner. Phantom and human brain data from volunteers and patients were acquired. Scan time reductions of 25-52% were achieved compared to standard acquisitions, largely confirming the simulation results. We evaluated the resulting images by quantitatively analyzing the preservation of contrast and the signal-to-noise ratio (SNR). In addition, data sets for 10 clinical cases obtained with TSE combo and corresponding standard acquisitions were graded by two experienced neuroradiologists in terms of the level of artifacts and image quality for comparison. Only minor image degradation with the combo scans was observed, indicating an inherent trade-off between scan time reduction and image quality. The specific aspects of combo acquisitions with respect to motion, flow, and κ-space data weighting are discussed. © 2006 Wiley-Liss, Inc.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/en_US
dc.relation.ispartofMagnetic Resonance in Medicineen_US
dc.subject.meshAlgorithmsen_US
dc.subject.meshBrain - Anatomy & Histologyen_US
dc.subject.meshHumansen_US
dc.subject.meshImage Enhancement - Methodsen_US
dc.subject.meshImage Interpretation, Computer-Assisted - Methodsen_US
dc.subject.meshInformation Storage And Retrieval - Methodsen_US
dc.subject.meshMagnetic Resonance Imaging - Instrumentation - Methodsen_US
dc.subject.meshPhantoms, Imagingen_US
dc.subject.meshQuality Assurance, Health Care - Methodsen_US
dc.subject.meshReproducibility Of Resultsen_US
dc.subject.meshSensitivity And Specificityen_US
dc.subject.meshSubtraction Techniqueen_US
dc.subject.meshTime Factorsen_US
dc.titleCombo acquisitions: Balancing scan time reduction and image qualityen_US
dc.typeArticleen_US
dc.identifier.emailWu, EX:ewu1@hkucc.hku.hken_US
dc.identifier.authorityWu, EX=rp00193en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/mrm.20882en_US
dc.identifier.pmid16598731-
dc.identifier.scopuseid_2-s2.0-33646486548en_US
dc.identifier.hkuros119802-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646486548&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume55en_US
dc.identifier.issue5en_US
dc.identifier.spage1093en_US
dc.identifier.epage1105en_US
dc.identifier.isiWOS:000237151600016-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridMekle, R=6506702350en_US
dc.identifier.scopusauthoridWu, EX=7202128034en_US
dc.identifier.scopusauthoridMeckel, S=13604933300en_US
dc.identifier.scopusauthoridWetzel, SG=7004846703en_US
dc.identifier.scopusauthoridScheffler, K=7005227889en_US

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