An independent international group of researchers from academics and national agencies formed a dedicated task group within the American Association of Physicists in Medicine to identify key image quality characteristics and objective test methods for macroscopic fluorescence-guided surgery (FGS). The minimum set of measurements considered important for basic device performance are image sharpness,...

The Bayesian approach to solving inverse problems strongly depends on the choice of a prior. Usually, a prior is constructed from expert knowledge or known physical constraints in a probabilistic fashion. A modern alternative to formulate such expert knowledge are generative models, a popular tool in machine learning to generate data whose properties closely resemble a given database by an...

Special, certified software is required for the reliable visualisation of consumption data on intelligent metering systems (smart meters).

As part of the digitalisation of the energy transition, such software must meet the requirements of the Metering Point Operation Act (MsbG) and the specifications of the Federal Office for Information Security (BSI) for the smart meter gateway.

This...

To accelerate the inherently slow acquisition process in magnetic resonance imaging (MRI) is one of the core tasks of MRI research since the very invention of this imaging modality. It was thus a huge mile-stone, therefore, when Prüssmann and coworkers recognized, 25 years ago, how the different spatial sensitivities of the various coil elements in modern MRI receivers could be utilized to speed...

On September 27, 2023, PTB Berlin hosted the kick-off meeting of the EU project GenomeMET. Cancer is a major challenge in Europe, causing more than 1.3 million deaths annually. EU-Mission Cancer prioritizes early diagnosis and precision medicine. Advances in gene sequencing, driven by technologies such as Next Generation Sequencing (NGS), are transforming cancer care. These techniques promise...

Conformity assessment processes for modified software should be made even more efficient and manufacturers of measuring instruments should be able to make changes to certified software during operation without having to have the entire software tested again.

For this purpose, PTB Working Group 8.51 "Metrological Software" proposed and analysed a new approach for monitoring the functional...

Magnetic resonance imaging (MRI) not only provides images from inside the human body, but the method also allows various functional physiological parameters to be measured directly. An important example of this is spatially and temporally resolved velocity profiling of flowing blood in large vessels, such as the aortic arch. However, the phase-contrast MRI commonly used for this purpose often...

An optical flow cytometer analyzes and counts cells and particles based on the measured intensity of their scattered light, among other things. In recent years, however, it has become increasingly popular to image the scattered light on a camera. This allows images of cells and particles to be taken and analyzed in the forward and sideward directions. If the scattered light of spherical particles...

In August 2023, the research paper Wirelessly interfacing sensor-equipped implants and MR scanners for improved safety and imaging, by Berk Silemek and coworkers from PTB 8.11 was first published online in Magnetic Resonance in Medicine (MRM, doi: 10.1002/mrm.29818). The paper demonstrates how signals from small and cheap sensors at the tip of a medical implant, e.g. the lead of a cardiac...

Layla Riemann, former PhD student in research group 8.12, was awarded a prize from the Helmholtz-Fonds e.V. for her outstanding dissertation "Towards Faster and More Precise MR Spectroscopy at 7 T". The Helmholtz-Fonds promotes progress in metrology and supports young scientists by awarding prizes for excellent work, among other things.

Contact:

Bernd Ittermann, E-Mail: 📧 bernd.itte...