title: Single breath-hold real-time cine MR imaging: improved temporal resolution using generalized autocalibrating partially parallel acquisition (GRAPPA) algorithm.
abstract: The purpose of this study was to test parallel imaging techniques for improvement of temporal resolution in multislice single breath-hold real-time cine steady-state free precession (SSFP) in comparison with standard segmented single-slice SSFP techniques. Eighteen subjects were examined on a 1.5-T scanner using a multislice real-time cine SSFP technique using the GRAPPA algorithm. Global left ventricular parameters (EDV, ESV, SV, EF) were evaluated and results compared with a standard segmented single-slice SSFP technique. Results for EDV ( r=0.93), ESV ( r=0.99), SV ( r=0.83), and EF ( r=0.99) of real-time multislice SSFP imaging showed a high correlation with results of segmented SSFP acquisitions. Systematic differences between both techniques were statistically non-significant. Single breath-hold multislice techniques using GRAPPA allow for improvement of temporal resolution and for accurate assessment of global left ventricular functional parameters.
authors.affiliation: Department of Clinical Radiology, University of Munich, Klinikum Grosshadern, Marchioninistrasse 15, 81377 Munich, Germany. wintersperger@ikra.med.uni-muenchen.de
authors.forename: Bernd J
authors.initials: BJ
authors.lastname: Wintersperger
authors.forename: Konstantin
authors.initials: K
authors.lastname: Nikolaou
authors.forename: Olaf
authors.initials: O
authors.lastname: Dietrich
authors.forename: Johannes
authors.initials: J
authors.lastname: Rieber
authors.forename: Matthias
authors.initials: M
authors.lastname: Nittka
authors.forename: Maximilian F
authors.initials: MF
authors.lastname: Reiser
authors.forename: Stefan O
authors.initials: SO
authors.lastname: Schoenberg
mesh_terms: D000465:Algorithms; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods; D016277:Ventricular Function, Left