Comparison of three multichannel transmit/receive radiofrequency coil configurations for anatomic and functional cardiac MRI at 7.0T: implications for clinical imaging.
Objectives: To implement, examine, and compare three multichannel transmit/receive coil configurations for cardiovascular MR (CMR) at 7T.Methods: Three radiofrequency transmit-receive (TX/RX) coils with 4-, 8-, and 16-coil elements were used. Ten healthy volunteers (seven males, age 28 ± 4 years) un...
| Publicado en: | European Radiology Vol. 22; no. 10; pp. 2211 - 2221 |
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| Autores principales: | , , , , , , , , , , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Oct2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104364727&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104364727 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Oct2012 vid: 22 iid: 10 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104364727 79471655 NLM22653280 2011669609 10.1007/s00330-012-2487-1 NLM22653280 104364727 ppf: 2211 ppct: 10 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Comparison of three multichannel transmit/receive radiofrequency coil configurations for anatomic and functional cardiac MRI at 7.0T: implications for clinical imaging. aug: au: Winter L Kellman P Renz W Gräßl A Hezel F Thalhammer C von Knobelsdorff-Brenkenhoff F Tkachenko V Schulz-Menger J Niendorf T Winter, Lukas Kellman, Peter Renz, Wolfgang Gräßl, Andreas Hezel, Fabian Thalhammer, Christof von Knobelsdorff-Brenkenhoff, Florian Tkachenko, Valeriy Schulz-Menger, Jeanette Niendorf, Thoralf affil: Berlin Ultrahigh Field Facility, Max-Delbrück Center for Molecular Medicine, Robert-Roessle-Strasse 10, 13125, Berlin, Germany sug: subj: Diagnostic Imaging Magnetic Resonance Imaging Equipment and Supplies Magnetic Resonance Imaging Methods Adult Female Male Young Adult Adult: 19-44 years Female Male ab: Objectives: To implement, examine, and compare three multichannel transmit/receive coil configurations for cardiovascular MR (CMR) at 7T.Methods: Three radiofrequency transmit-receive (TX/RX) coils with 4-, 8-, and 16-coil elements were used. Ten healthy volunteers (seven males, age 28 ± 4 years) underwent CMR at 7T. For all three RX/TX coils, 2D CINE FLASH images of the heart were acquired. Cardiac chamber quantification, signal-to-noise ratio (SNR) analysis, parallel imaging performance assessment, and image quality scoring were performed.Results: Mean total examination time was 29 ± 5 min. All images obtained with the 8- and 16-channel coils were diagnostic. No significant difference in ejection fraction (EF) (P > 0.09) or left ventricular mass (LVM) (P > 0.31) was observed between the coils. The 8- and 16-channel arrays yielded a higher mean SNR in the septum versus the 4-channel coil. The lowest geometry factors were found for the 16-channel coil (mean ± SD 2.3 ± 0.5 for R = 4). Image quality was rated significantly higher (P < 0.04) for the 16-channel coil versus the 8- and 4-channel coils.Conclusions: All three coil configurations are suitable for CMR at 7.0T under routine circumstances. A larger number of coil elements enhances image quality and parallel imaging performance but does not impact the accuracy of cardiac chamber quantification.Key Points: • Cardiac chamber quantification using 7.0T magnetic resonance imaging is feasible. • Examination times for cardiac chamber quantification at 7.0T match current clinical practice. • Multichannel transceiver RF technology facilitates improved image quality and parallel imaging performance. • Increasing the number of RF channels does not influence cardiac chamber quantification. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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