Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  A 31-channel integrated “AC/DC” B0 shim and radiofrequency receive array coil for improved 7T MRI

Stockmann, J., Arango, N., Witzel, T., Mareyam, A., Sappo, C., Zhou, J., et al. (2022). A 31-channel integrated “AC/DC” B0 shim and radiofrequency receive array coil for improved 7T MRI. Magnetic Resonance in Medicine, 87(2), 1074-1092. doi:10.1002/mrm.29022.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:
ausblenden:
Beschreibung:
-
OA-Status:

Urheber

einblenden:
ausblenden:
 Urheber:
Stockmann, JP, Autor
Arango, NS, Autor
Witzel, T, Autor
Mareyam, A, Autor
Sappo, C, Autor
Zhou, J1, 2, Autor           
Jenkins, L, Autor
Craven-Brightman, L, Autor
Milshteyn, E, Autor
Davids, M, Autor
Hoge, WS, Autor
Sliwiak, M, Autor
Nasr, S, Autor
Keil, B, Autor
Adalsteinsson, E, Autor
Guerin, B, Autor
White, JK, Autor
Setsompop, K, Autor
Polimeni, JR, Autor
Wald, LL, Autor
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Purpose: To test an integrated "AC/DC" array approach at 7T, where B0 inhomogeneity poses an obstacle for functional imaging, diffusion-weighted MRI, MR spectroscopy, and other applications.

Methods: A close-fitting 7T 31-channel (31-ch) brain array was constructed and tested using combined Rx and ΔB0 shim channels driven by a set of rapidly switchable current amplifiers. The coil was compared to a shape-matched 31-ch reference receive-only array for RF safety, signal-to-noise ratio (SNR), and inter-element noise correlation. We characterize the coil array's ability to provide global and dynamic (slice-optimized) shimming using ΔB0 field maps and echo planar imaging (EPI) acquisitions.

Results: The SNR and average noise correlation were similar to the 31-ch reference array. Global and slice-optimized shimming provide 11% and 40% improvements respectively compared to baseline second-order spherical harmonic shimming. Birdcage transmit coil efficiency was similar for the reference and AC/DC array setups.

Conclusion: Adding ΔB0 shim capability to a 31-ch 7T receive array can significantly boost 7T brain B0 homogeneity without sacrificing the array's rdiofrequency performance, potentially improving ultra-high field neuroimaging applications that are vulnerable to off-resonance effects.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2021-102022-02
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1002/mrm.29022
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Magnetic Resonance in Medicine
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: New York : Wiley-Liss
Seiten: - Band / Heft: 87 (2) Artikelnummer: - Start- / Endseite: 1074 - 1092 Identifikator: ISSN: 0740-3194
CoNE: https://pure.mpg.de/cone/journals/resource/954925538149