B
Berthold Kiefer
Researcher at Siemens
Publications - 163
Citations - 11644
Berthold Kiefer is an academic researcher from Siemens. The author has contributed to research in topics: Magnetic resonance imaging & Intravoxel incoherent motion. The author has an hindex of 37, co-authored 163 publications receiving 10486 citations. Previous affiliations of Berthold Kiefer include New York University & University of Erlangen-Nuremberg.
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Journal ArticleDOI
Generalized autocalibrating partially parallel acquisitions (GRAPPA).
Mark A. Griswold,Peter M. Jakob,Robin M. Heidemann,Mathias Nittka,Vladimir Jellus,Jianmin Wang,Berthold Kiefer,Axel Haase +7 more
TL;DR: This technique, GeneRalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) is an extension of both the PILS and VD‐AUTO‐SMASH reconstruction techniques and provides unaliased images from each component coil prior to image combination.
Journal ArticleDOI
The Virtual Family—development of surface-based anatomical models of two adults and two children for dosimetric simulations
Andreas Christ,Wolfgang Kainz,Eckhart G. Hahn,Katharina Honegger,Marcel Zefferer,Esra Neufeld,Esra Neufeld,Wolfgang Rascher,Rolf Janka,Werner Bautz,Ji Chen,Berthold Kiefer,Peter Schmitt,Hans Peter Hollenbach,Jianxiang Shen,M. Oberle,Dominik Szczerba,Anthony Kam,Joshua Guag,Niels Kuster,Niels Kuster +20 more
TL;DR: All tissues and organs were reconstructed as three-dimensional unstructured triangulated surface objects, yielding high precision images of individual features of the body, which greatly enhances the meshing flexibility and the accuracy in comparison with the traditional voxel-based representation of anatomical models.
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Characterization of focal liver lesions by ADC measurements using a respiratory triggered diffusion-weighted single-shot echo-planar MR imaging technique.
Melanie Bruegel,Konstantin Holzapfel,Jochen Gaa,Klaus Woertler,Simone Waldt,Berthold Kiefer,Alto Stemmer,Carl Ganter,Ernst J. Rummeny +8 more
TL;DR: Measurements of the ADCs of focal liver lesions on the basis of a respiratory triggered DW-SS-EPI sequence may constitute a useful supplementary method for lesion characterization.
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Double echo steady state magnetic resonance imaging of knee articular cartilage at 3 Tesla: a pilot study for the Osteoarthritis Initiative
Felix Eckstein,Martin Hudelmaier,Wolfgang Wirth,Berthold Kiefer,Rebecca D. Jackson,Joseph S. Yu,Charles B. Eaton,Erika Schneider +7 more
TL;DR: Testing the accuracy and precision of knee cartilage qMRI with a fast double echo, steady state (DESS) sequence with water excitation at 3 T permits accurate and precise analysis of cartilage morphology in the femorotibial joint.
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Free-breathing radial 3D fat-suppressed T1-weighted gradient echo sequence: a viable alternative for contrast-enhanced liver imaging in patients unable to suspend respiration.
Hersh Chandarana,Tobias K. Block,Andrew B. Rosenkrantz,Ruth P. Lim,Daniel Kim,David J. Mossa,James S. Babb,Berthold Kiefer,Vivian S. Lee +8 more
TL;DR: Free-breathing radially sampled 3D fat suppressed T1-weighted gradient-echo acquisitions with breath-hold and conventional VIBE acquisitions for postcontrast imaging of the liver can be performed during free breathing for contrast-enhanced imaging ofThe liver with comparable image quality to BH V IBE.