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Biomedical Magnetic Resonance

Department 8.1

Tasks

 

The department engages in method development for magnetic resonance imaging (MRI) and spectroscopy (MRS).

Specific methodological aspects of MRI are covered by currently four research groups: physical basics and safety (8.11); quantitative MRI and MRS applications in neuroscience studies in cooperation with clinical research groups (8.12); data acquisition and image reconstruction algorithms for motion correction and multimodal imaging (8.13); excitation and acquisition techniques specifically designed to harvest the potential of 'ultrahigh' (7T) magnetic fields (8.14).
Central research tool is a whole-body 3-tesla MR scanner. Additionally, the department is engaged in the Berlin Ultrahigh Field Facility which is operating a 7-tesla whole body scanner.

News

A major challenge of cardiac ultrahigh field magnetic resonance imaging (MRI) is the impact of respiratory motion. Not only the image quality is limited by varying B1+-inhomogeneities, but also the spatial distribution of the specific absorption rate (SAR) and hence the safety relevant power limits are affected by respiratory motion. To quantify these effects, Natalie Schön (AG 8.14) and...

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Andreas Kofler (PTB) published together with Christian Wald (Charité–Universitätsmedizin Berlin), Markus Haltmeier (University of Innsbruck), Tobias Schäffter (PTB) and Christoph Kolbitsch (PTB) an article about a method for image reconstruction based on convolutional dictionary learning.

The method can be seen as a physics-informed and supervised method fo learnind a convolutional dictionary....

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Magnetic Resonance Spectroscopy (MRS) is a unique technique for measuring the concentrations of neurotransmitters and other metabolites non-invasively. Applied to confined pathologies in the brain, it is often desirable to compare spectra from both the affected and the unaffected, contra-lateral area. Ideally, both spectra are acquired simultaneously with minimal cost of extra scan time. To this...

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