@article{BeckerFrauenrathHezeletal.2010, author = {Becker, Meike and Frauenrath, Tobias and Hezel, Fabian and Krombach, Gabriele A. and Kremer, Ute and Koppers, Benedikt and Butenweg, Christoph and Goemmel, Andreas and Utting, Jane F. and Schulz-Menger, Jeanette and Niendorf, Thoralf}, title = {Comparison of left ventricular function assessment using phonocardiogram- and electrocardiogram-triggered 2D SSFP CINE MR imaging at 1.5 T and 3.0 T}, series = {European Radiology}, volume = {20}, journal = {European Radiology}, publisher = {Springer}, address = {Berlin}, issn = {1432-1084 (Onlineausgabe)}, doi = {10.1007/s00330-009-1676-z}, pages = {1344 -- 1355}, year = {2010}, abstract = {Objective: As high-field cardiac MRI (CMR) becomes more widespread the propensity of ECG to interference from electromagnetic fields (EMF) and to magneto-hydrodynamic (MHD) effects increases and with it the motivation for a CMR triggering alternative. This study explores the suitability of acoustic cardiac triggering (ACT) for left ventricular (LV) function assessment in healthy subjects (n=14). Methods: Quantitative analysis of 2D CINE steady-state free precession (SSFP) images was conducted to compare ACT's performance with vector ECG (VCG). Endocardial border sharpness (EBS) was examined paralleled by quantitative LV function assessment. Results: Unlike VCG, ACT provided signal traces free of interference from EMF or MHD effects. In the case of correct Rwave recognition, VCG-triggered 2D CINE SSFP was immune to cardiac motion effects—even at 3.0 T. However, VCG-triggered 2D SSFP CINE imaging was prone to cardiac motion and EBS degradation if R-wave misregistration occurred. ACT-triggered acquisitions yielded LV parameters (end-diastolic volume (EDV), endsystolic volume (ESV), stroke volume (SV), ejection fraction (EF) and left ventricular mass (LVM)) comparable with those derived fromVCG-triggered acquisitions (1.5 T: ESVVCG=(56± 17) ml, EDVVCG=(151±32)ml, LVMVCG=(97±27) g, SVVCG=(94± 19)ml, EFVCG=(63±5)\% cf. ESVACT= (56±18) ml, EDVACT=(147±36) ml, LVMACT=(102±29) g, SVACT=(91± 22) ml, EFACT=(62±6)\%; 3.0 T: ESVVCG=(55±21) ml, EDVVCG=(151±32) ml, LVMVCG=(101±27) g, SVVCG=(96±15) ml, EFVCG=(65±7)\% cf. ESVACT=(54±20) ml, EDVACT=(146±35) ml, LVMACT= (101±30) g, SVACT=(92±17) ml, EFACT=(64±6)\%). Conclusions: ACT's intrinsic insensitivity to interference from electromagnetic fields renders}, language = {en} } @inproceedings{FrauenrathGoemmelButenwegetal.2010, author = {Frauenrath, Tobias and G{\"o}mmel, Andreas and Butenweg, Christoph and Otten, Mario and Niendorf, Thoralf}, title = {3D mapping of vocal fold geometry during articulatory maneuvers using ultrashort echo time imaging at 3.0 T}, series = {ISMRM-ESMRMB joint annual meeting 2010 : Stockholm, Sweden, 1 - 7 May 2010. Band 4}, booktitle = {ISMRM-ESMRMB joint annual meeting 2010 : Stockholm, Sweden, 1 - 7 May 2010. Band 4}, publisher = {Curran}, address = {Red Hook, NY}, organization = {International Society of Magnetic Resonance in Medicine}, isbn = {978-1-617-82008-3}, pages = {3087}, year = {2010}, language = {en} } @inproceedings{GoemmelFrauenrathOttenetal.2010, author = {G{\"o}mmel, Andreas and Frauenrath, Tobias and Otten, Mario and Niendorf, Thoralf and Butenweg, Christoph}, title = {In-vivo measurements of vocal fold geometry using Magnetic Resonance Imaging}, series = {Fortschritte der Akustik - DAGA 2010 36. Jahrestagung f{\"u}r Akustik, 15. bis 18. M{\"a}rz 2010 in Berlin}, booktitle = {Fortschritte der Akustik - DAGA 2010 36. Jahrestagung f{\"u}r Akustik, 15. bis 18. M{\"a}rz 2010 in Berlin}, editor = {M{\"o}ser, Michael and Schulte-Fortkamp, Brgitte and Ochmann, Martin}, publisher = {Deutsche Gesellschaft f{\"u}r Akustik}, address = {Berlin}, isbn = {978-3-9808659-8-2}, year = {2010}, language = {de} } @inproceedings{GoemmelNiendorfFrauenrathetal.2010, author = {G{\"o}mmel, Andreas and Niendorf, Thoralf and Frauenrath, Tobias and Otten, Mario and Butenweg, Christoph and Kob, Malte}, title = {3D vocal fold geometry mapping using Magnetic Resonance Imaging}, series = {Fortschritte der Akustik : 36. Deutsche Jahrestagung f{\"u}r Akustik ; 15.-18. M{\"a}rz 2010, [Berlin ; DAGA 2010] / DEGA ... Wiss. Ed. Michael M{\"o}ser ... Band 1}, booktitle = {Fortschritte der Akustik : 36. Deutsche Jahrestagung f{\"u}r Akustik ; 15.-18. M{\"a}rz 2010, [Berlin ; DAGA 2010] / DEGA ... Wiss. Ed. Michael M{\"o}ser ... Band 1}, publisher = {Deutsche Gesellschaft f{\"u}r Akustik}, address = {Berlin}, organization = {Deutsche Jahrestagung f{\"u}r Akustik <36, 2010, Berlin>}, isbn = {978-3-9808659-8-2}, pages = {271 -- 272}, year = {2010}, language = {en} }