title: Dual-source RF transmission in cardiac SSFP imaging at 3 T: systematic spatial evaluation of image quality improvement compared to conventional RF transmission.
abstract: The purpose of this investigation was to systematically evaluate the spatial distribution of image quality improvement with dual-source radiofrequency (RF) transmission in cardiac steady-state free precession sequences at 3.0 T. Imaging with and without dual-source RF transmission was performed in 30 patients. Contrast-to-noise ratio for the left ventricular myocardium was significantly higher using dual-source RF transmission, but improvement was not uniformly distributed. The posterior myocardium showed significantly less contrast-to-noise ratio gain than all other cardiac regions. Signal-to-noise ratio increase was higher in the right than in the left ventricle. Subjective image quality was significantly enhanced by parallel RF transmission.
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: michael.rasper@tum.de.
authors.forename: Michael
authors.initials: M
authors.lastname: Rasper
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: bettina.gramer@tum.de.
authors.forename: Bettina M
authors.initials: BM
authors.lastname: Gramer
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: msettles@tum.de.
authors.forename: Marcus
authors.initials: M
authors.lastname: Settles
authors.affiliation: Department of Cardiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: klaugwitz@med1.med.tum.de.
authors.forename: Karl-Ludwig
authors.initials: KL
authors.lastname: Laugwitz
authors.affiliation: Department of Cardiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: t.ibrahim@lrz.tu-muenchen.de.
authors.forename: Tareq
authors.initials: T
authors.lastname: Ibrahim
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: ernst.rummeny@tum.de.
authors.forename: Ernst J
authors.initials: EJ
authors.lastname: Rummeny
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675 Munich, Germany. Electronic address: armin.huber@tum.de.
authors.forename: Armin
authors.initials: A
authors.lastname: Huber
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology*; D058996:Quality Improvement; D055815:Young Adult
chemical_list: D003287:Contrast Media
keywords: Cardiac MRI; Dual-source RF transmission; MultiTransmit; SSFP