J
Johannes M. Froehlich
Researcher at Guerbet
Publications - 95
Citations - 3071
Johannes M. Froehlich is an academic researcher from Guerbet. The author has contributed to research in topics: Magnetic resonance imaging & Prostate cancer. The author has an hindex of 29, co-authored 90 publications receiving 2739 citations. Previous affiliations of Johannes M. Froehlich include Winterthur Museum, Garden and Library & ETH Zurich.
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Journal ArticleDOI
Combined Ultrasmall Superparamagnetic Particles of Iron Oxide–Enhanced and Diffusion-Weighted Magnetic Resonance Imaging Reliably Detect Pelvic Lymph Node Metastases in Normal-Sized Nodes of Bladder and Prostate Cancer Patients
Harriet C. Thoeny,Maria Triantafyllou,Frederic D. Birkhaeuser,Johannes M. Froehlich,Dechen W. Tshering,Tobias Binser,Achim Fleischmann,Peter Vermathen,Urs E. Studer +8 more
TL;DR: USPIO-DW-MRI is a fast and accurate method for detecting pelvic lymph node metastases, even in normal-sized nodes of bladder or prostate cancer patients.
Journal ArticleDOI
Metastases in Normal-sized Pelvic Lymph Nodes: Detection with Diffusion-weighted MR Imaging
Harriet C. Thoeny,Johannes M. Froehlich,Maria Triantafyllou,Juerg Huesler,Lauren J. Bains,Peter Vermathen,Achim Fleischmann,Urs E. Studer +7 more
TL;DR: DW MR imaging enables noninvasive detection of small lymph node metastases in normal-sized nodes in a substantial percentage of patients with prostate and bladder cancer diagnosed as N0 with conventional cross-sectional imaging techniques.
Journal ArticleDOI
Small bowel motility assessment with magnetic resonance imaging
Johannes M. Froehlich,Michael A. Patak,Constantin von Weymarn,Christoph F. Juli,Christoph L. Zollikofer,Klaus-Ulrich Wentz +5 more
TL;DR: To assess primarily the feasibility of magnetic resonance imaging as a tool to monitor small bowel peristaltic motion and secondarily to validate this technique by demonstrating drug‐induced motility changes.
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Bone Metastases from Prostate Cancer: Assessing Treatment Response by Using Diffusion-weighted Imaging and Functional Diffusion Maps—Initial Observations
Carolin Reischauer,Johannes M. Froehlich,Dow-Mu Koh,Nicole Graf,Christian Padevit,Hubert John,Christoph A. Binkert,Peter Boesiger,Andreas Gutzeit +8 more
TL;DR: DW MR imaging allows monitoring of antiandrogen therapy in bone metastases by using diffusion-weighted magnetic resonance (MR) imaging with the apparent diffusion coefficient (ADC) and functional diffusion maps (DMs).
Journal ArticleDOI
Diffusion-weighted MR Imaging of Upper Abdominal Organs: Field Strength and Intervendor Variability of Apparent Diffusion Coefficients
Olivio F. Donati,Daniel G. Q. Chong,Daniel Nanz,Andreas Boss,Johannes M. Froehlich,Erik Andres,Burkhardt Seifert,Harriet C. Thoeny +7 more
TL;DR: Despite significant intervendor differences in ADC values of various anatomic regions of the upper abdomen, ADCvalues of the gallbladder, pancreas, spleen, and kidney may be comparable between MR systems from different vendors and between different field strengths.