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Design and application of a four-channel transmit/receive surface coil for functional cardiac imaging at 7T
Journal of magnetic resonance imaging, 2011-03, Vol.33 (3), p.736-741
Dieringer, Matthias A.
Renz, Wolfgang
Lindel, Tomasz
Seifert, Frank
Frauenrath, Tobias
von Knobelsdorff-Brenkenhoff, Florian
Waiczies, Helmar
Hoffmann, Werner
Rieger, Jan
Pfeiffer, Harald
Ittermann, Bernd
Schulz-Menger, Jeanette
Niendorf, Thoralf
2011
Details
Autor(en) / Beteiligte
Dieringer, Matthias A.
Renz, Wolfgang
Lindel, Tomasz
Seifert, Frank
Frauenrath, Tobias
von Knobelsdorff-Brenkenhoff, Florian
Waiczies, Helmar
Hoffmann, Werner
Rieger, Jan
Pfeiffer, Harald
Ittermann, Bernd
Schulz-Menger, Jeanette
Niendorf, Thoralf
Titel
Design and application of a four-channel transmit/receive surface coil for functional cardiac imaging at 7T
Ist Teil von
Journal of magnetic resonance imaging, 2011-03, Vol.33 (3), p.736-741
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2011
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Purpose To design and evaluate a four‐channel cardiac transceiver coil array for functional cardiac imaging at 7T. Materials and Methods A four‐element cardiac transceiver surface coil array was developed with two rectangular loops mounted on an anterior former and two rectangular loops on a posterior former. specific absorption rate (SAR) simulations were performed and a B 1+ calibration method was applied prior to obtain 2D FLASH CINE (mSENSE, R = 2) images from nine healthy volunteers with a spatial resolution of up to 1 × 1 × 2.5 mm3. Results Tuning and matching was found to be better than 10 dB for all subjects. The decoupling (S21) was measured to be >18 dB between neighboring loops, >20 dB for opposite loops, and >30 dB for other loop combinations. SAR values were well within the limits provided by the IEC. Imaging provided clinically acceptable signal homogeneity with an excellent blood‐myocardium contrast applying the B 1+ calibration approach. Conclusion A four‐channel cardiac transceiver coil array for 7T was built, allowing for cardiac imaging with clinically acceptable signal homogeneity and an excellent blood‐myocardium contrast. Minor anatomic structures, such as pericardium, mitral, and tricuspid valves and their apparatus, as well as trabeculae, were accurately delineated. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 1053-1807
eISSN: 1522-2586
DOI: 10.1002/jmri.22451
Titel-ID: cdi_proquest_miscellaneous_858781890
Format
–
Schlagworte
7.0 Tesla
,
7T cardiac imaging
,
Absorption
,
Adult
,
Calibration
,
Contrast Media - pharmacology
,
Diagnostic Imaging - instrumentation
,
Diagnostic Imaging - methods
,
Equipment Design
,
Female
,
Heart - physiology
,
Humans
,
left ventricular function
,
Magnetic Resonance Imaging - instrumentation
,
Magnetic Resonance Imaging - methods
,
Male
,
Middle Aged
,
Myocardium - pathology
,
Reproducibility of Results
,
RF coil design
,
ultrahigh field cardiovascular MRI
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