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Proof of SARS-CoV-2 infection is based on detection of genetic markers - e.g. using PCR. The infection can also be proved by detection of characteristic proteins. Antigen tests make use of this approach. We tested the correlation between genetic markers and proteins of SARS-CoV-2. Two quantitative methods were used. The gene concentration was measured using digital PCR. This method provides most...

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Simone Hufnagel was awarded the prize for the best oral presentation at this year's meeting of the German chapter of the "International Society for Magnetic Resonance in Medicine (ISMRM)". In her talk Simone Hufnagel presented a method for the determination of 3D quantitative parameter maps of the heart. This method provides important diagnostic information about the myocardium not only...

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On September 6 and 7, 2023, PTB hosted the 25th Annual Meeting of the German Chapter of the International Society for Magnetic Resonance in Medicine (ISMRM, www.ismrm-ds.org) in Berlin. The meeting committee, Sebastian Schmitter (PTB), Susanne Schnell (Universität Greifswald) und Ingolf Sack (Charité Berlin), enjoyed not only the fantastic weather but even more so a record attendance of more...

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Artificial intelligence and machine learning tools hold promise to assist or drive high-stakes decisions in areas such as finance, medicine, or autonomous driving. The upcoming AI Act will require that the principles by which such algorithms arrive at their predictions should be transparent. However, the field of XAI is lacking formal problem specifications and theoretical results. In a new study,...

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Active implantable medical devices (AIMDs), such as cardiac pacemakers, have already been implanted in millions of patients worldwide. However, individuals with AIMDs still face limitations in accessing state-of-the-art MRI technology due to the potential risks involved. This restriction is due to the fact that MR scanners employ powerful radiofrequency fields which can result in tissue burns...

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Abbildung WELMEC Guide 7.2 Version 2023

Der WELMEC Guide 7.2 „Software“ ist der am meisten genutzte Leitfaden der WELMEC und liegt jetzt in einer aktualisierten und überarbeiteten Version 2023 vor. Dieser Guide bietet europäischen Notified Bodies, Herstellern von Messgeräten und den Überwachungsbehörden abgestimmte technische Interpretationen der grundlegenden Anforderungen der europäischen Messgeräterichtline (MID und der...

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Andreas Kofler (PTB) published together with Fabian Altekrüger (TU Berlin), Fatima Antarou Ba (TU Berlin), Christoph Kolbitsch(PTB), Evangelos Papoutsellis (Finden Ltd), David Schote (PTB), Clemens Sirotenko (WIAS), Felix Frederik Zimmermann (PTB) and Kostas Papafitsoros (QMUL) an article in SIAM Imaging Sciences.

The article describes a new method for learning regularization parameter-maps...

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Andreas Kofler (PTB) published together with Kirsten Kerkering (PTB), Laura Göschel (Charité-Unviersitätsmedizin Berlin), Ariane Fillmer (PTB) and Christoph Kolbitsch (PTB) an article in IEEE Transactions on Biomedical Engineering.

The article describes a new method for obtaining quantitative MR parameters using adaptive dictionary learning and sparse coding. Instead of applying dictionary...

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SARS-CoV-2 positiv TestIn response to the high demand for rapid SARS-CoV-2 diagnostic tests, lateral flow tests have been widely used as a diagnostic tool to detect SARS-CoV-2 antigens. Compared to PCR tests, these tests are inexpensive to produce and easy to use. They provide a rapid visual result and are ideal for point-of-care settings.

We investigated the interlaboratory performance of SARS-CoV-2 antigen testing...

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When a real measurement procedure is reproduced by simulations, it may be referred to as a “virtual measurement”. From a metrological point of view, the question is how to ensure confidence in such virtual measurements. While methods to estimate diverse sources of error in simulations have been developed over the past decades, there has to date been no accepted strategy for meeting the...

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