Logo of the Physikalisch-Technische Bundesanstalt

Latest scientific news

Successful day for PhD students Johannes Petzold (left) and Berk Silemek (right). At the meeting of the study group on MRI Safety at this year's annual meeting of the International Society for Magnetic Resonance in Medicine (ISMRM) in Toronto, ON, Canada, both were awarded a study group award for their excellent contributions to the field. Johannes received the third prize for his work on "Exper...

[ more ]

In an international collaboration led by University College London, a reference phantom for quantitative MRI imaging of the heart, called T2MES, was developed and tested over twelve months. Spatially resolved measurements of the transverse relaxation time T2 provide clues to edema, inflammation, and other diseases of the myocardium, but in clinical practice measurement results are often...

[ more ]

In a collaboration of PTB departments 1.6 and 8.1 with the Simone Kühne's group at the Max Planck Institute for Human Development in Berlin investigate, it was investigated on a group of volunteers whether and, if so, how the human brain reacts to ultrasound stimuli when these are offered at sound levels below the individual hearing threshold. By functional MRI measurements it was found that a...

[ more ]

The predecessor had served us well for more than 13 years, but eventually it was time to replace it. On May 09, 2023, PTB's new 3T MRI arrived on our premises and was lowered into the historic "Quarzuhrenkeller". Distinguishing feature of the new Cima.X model from Siemens Healthineers, first installation of its kind in Europe, are the powerful gradients. Rated at 200 mT/m they outperform the...

[ more ]

Layla Riemann and Ariane Fillmer were the lead authors of a research paper entitled "Fourier-based decomposition for simultaneous 2-voxel MRS acquisition with 2SPECIAL published in Magnetic Resonance in Medicine (MRM), last summer. Their article was later chosen as an MRM Highlights Pick "… because it demonstrated exemplary reproducible research practices; specifically, they shared example data,...

[ more ]

Since its invention 50 years ago, the development of magnetic resonance imaging (MRI) has been characterized by the pursuit of higher magnetic field strengths. MR scanners with magnets up to 7 T are now a familiar sight in research facilities worldwide, but initiatives to build even more powerful systems have already emerged in many countries. In (and around) Germany, all "ultrahigh field" sites...

[ more ]

Layla Riemann successfully defended her PhD thesis "Towards Faster and More Precise MR Spectroscopy at 7 T" at the Faculty of Electrical Engineering and Information Technology of the Otto-von-Guericke University Magdeburg. Her work at PTB was supervised by Ariane Fillmer, head of the In Vivo MRI group 8.12. Doctoral supervisors at OVGU Magdeburg were the professors Georg Rose from the Electrical...

[ more ]

In cooperation with the group of Thoralf Niendorf at the Max Delbrück Center (MDC) for Molecular Medicine, Christoph S. Aigner and Sebastian Schmitter from research group 8.14 have investigated questions regarding the feasibility of cardio-MRI at a 14 T magnetic field. Electromagnetic field simulations were used to model various designs of radiofrequency(RF) coils and to evaluate them with...

[ more ]

Atembewegung während MRT-Messungen kann zu Bildartefakten führen und die diagnostische Qualität der Bilder beeinträchtigen. Um eine hohe Bildqualität für MRT-Untersuchungen der Leber auch unter freier Atmung zu ermöglichen, wurde eine radarbasierte Methode der Bewegungskorrektur entwickelt. Die Atemposition des Patienten wird in Echtzeit mit dem Radar erfasst und die Datenaufnahme angepasst. Dies...

[ more ]

Alice Carré was awarded the Excellence Price 2023 for her master thesis “Accuracy and reproducibility of MR Fingerprinting for different sampling schemes” for the best graduate student supported by the French-German doctoral college (DFH). She studied at Karlsruhe Institute of Technology and carried out the project for her master thesis in the working group 8.13.

The image shows Alice Carré...

[ more ]