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dc.contributor.authorReischauer, Carolin-
dc.contributor.authorVorburger, Robert S.-
dc.contributor.authorWilm, Bertram J.-
dc.contributor.authorJärmann, Thomas-
dc.contributor.authorBoesiger, Peter-
dc.date.accessioned2018-04-10T14:46:12Z-
dc.date.available2018-04-10T14:46:12Z-
dc.date.issued2012-06-
dc.identifier.issn0740-3194de_CH
dc.identifier.issn1522-2594de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/5019-
dc.description.abstractThe potential signal-to-noise ratio (SNR) gain at ultrahigh field strengths offers the promise of higher image resolution in single-shot diffusion-weighted echo-planar imaging the challenge being reduced T(2) and T(2) * relaxation times and increased B(0) inhomogeneity which lead to geometric distortions and image blurring. These can be addressed using parallel imaging (PI) methods for which a greater range of feasible reduction factors has been predicted at ultrahigh field strengths-the tradeoff being an associated SNR loss. Using comprehensive simulations, the SNR of high-resolution diffusion-weighted echo-planar imaging in combination with spin-echo and stimulated-echo acquisition is explored at 7 T and compared to 3 T. To this end, PI performance is simulated for coil arrays with a variable number of circular coil elements. Beyond that, simulations of the point spread function are performed to investigate the actual image resolution. When higher PI reduction factors are applied at 7 T to address increased image distortions, high-resolution imaging benefits SNR-wise only at relatively low PI reduction factors. On the contrary, it features generally higher image resolutions than at 3 T due to smaller point spread functions. The SNR simulations are confirmed by phantom experiments. Finally, high-resolution in vivo images of a healthy volunteer are presented which demonstrate the feasibility of higher PI reduction factors at 7 T in practice.de_CH
dc.language.isoende_CH
dc.publisherWileyde_CH
dc.relation.ispartofMagnetic Resonance in Medicinede_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectAdultde_CH
dc.subjectBrain mappingde_CH
dc.subjectComputer simulationde_CH
dc.subjectDiffusion Magnetic Resonance Imagingde_CH
dc.subjectEcho-Planar Imagingde_CH
dc.subjectFemalede_CH
dc.subjectHumansde_CH
dc.subjectImage processing, computer-assistedde_CH
dc.subjectMalede_CH
dc.subjectModels, theoreticalde_CH
dc.subjectPhantoms, imagingde_CH
dc.subjectSignal-to-noise ratiode_CH
dc.subject.ddc616: Innere Medizin und Krankheitende_CH
dc.titleOptimizing signal-to-noise ratio of high-resolution parallel single-shot diffusion-weighted echo-planar imaging at ultrahigh field strengthsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
dc.identifier.doi10.1002/mrm.23057de_CH
dc.identifier.pmid21702067de_CH
zhaw.funding.euNode_CH
zhaw.issue3de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end690de_CH
zhaw.pages.start679de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume67de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Reischauer, C., Vorburger, R. S., Wilm, B. J., Järmann, T., & Boesiger, P. (2012). Optimizing signal-to-noise ratio of high-resolution parallel single-shot diffusion-weighted echo-planar imaging at ultrahigh field strengths. Magnetic Resonance in Medicine, 67(3), 679–690. https://doi.org/10.1002/mrm.23057
Reischauer, C. et al. (2012) ‘Optimizing signal-to-noise ratio of high-resolution parallel single-shot diffusion-weighted echo-planar imaging at ultrahigh field strengths’, Magnetic Resonance in Medicine, 67(3), pp. 679–690. Available at: https://doi.org/10.1002/mrm.23057.
C. Reischauer, R. S. Vorburger, B. J. Wilm, T. Järmann, and P. Boesiger, “Optimizing signal-to-noise ratio of high-resolution parallel single-shot diffusion-weighted echo-planar imaging at ultrahigh field strengths,” Magnetic Resonance in Medicine, vol. 67, no. 3, pp. 679–690, Jun. 2012, doi: 10.1002/mrm.23057.
REISCHAUER, Carolin, Robert S. VORBURGER, Bertram J. WILM, Thomas JÄRMANN und Peter BOESIGER, 2012. Optimizing signal-to-noise ratio of high-resolution parallel single-shot diffusion-weighted echo-planar imaging at ultrahigh field strengths. Magnetic Resonance in Medicine. Juni 2012. Bd. 67, Nr. 3, S. 679–690. DOI 10.1002/mrm.23057
Reischauer, Carolin, Robert S. Vorburger, Bertram J. Wilm, Thomas Järmann, and Peter Boesiger. 2012. “Optimizing Signal-to-Noise Ratio of High-Resolution Parallel Single-Shot Diffusion-Weighted Echo-Planar Imaging at Ultrahigh Field Strengths.” Magnetic Resonance in Medicine 67 (3): 679–90. https://doi.org/10.1002/mrm.23057.
Reischauer, Carolin, et al. “Optimizing Signal-to-Noise Ratio of High-Resolution Parallel Single-Shot Diffusion-Weighted Echo-Planar Imaging at Ultrahigh Field Strengths.” Magnetic Resonance in Medicine, vol. 67, no. 3, June 2012, pp. 679–90, https://doi.org/10.1002/mrm.23057.


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