Influence of magnetic nanoparticles interactions on their magnetic particle imaging performance. - In: International journal on magnetic particle imaging, ISSN 2365-9033, Bd. 8 (2022), 1, 2203083, S. 1-3
Abstract: The here presented study investigated the influence of magnetic particle-particle interactions within the MPI tracer MNP on the imaging performance of the tracers. To realize a proper separation and to increase the distances between the individual tracer MNP (which results in reduced particle-particle interactions), the MNP were diluted by non-magnetic SiO2 spacers in the nanometer range. The obtained MNP/SiO2 mixtures were characterized and used to build up measurement phantoms by embedding the mixture into a long-term stable polymer matrix. In MPS and MPI measurements it was found that reduction of the magnetic interactions encompassed by increasing the MNP distances leads for the tested tracer system to a weaker decrease of higher harmonics in the MPS spectra after immobilization of the particles and thereby, a higher spatial MPI resolution can be achieved.
https://doi.org/10.18416/IJMPI.2022.2203083
Applying novel EMBRACE technological solutions to measure and optimize brain response to exercise.. - In: Alzheimer's and dementia, ISSN 1552-5279, Bd. 18 (2022), e069057, insges. 1 S.
Background: Extensive evidence supports the notion that physical activity (PA) promotes healthy aging and contributes to the prevention of brain damage and dementia. However, there are relevant differences in individual response to exercise that could mediate the extent of the PA-induced benefits. Here, we propose the application of the novel technology that is currently being developed by the EMBRACE project researchers to the characterization of the individual physiological response to exercise in older adults. Method: EMBRACE is an intersectoral and international consortium that brings together experts in biomedical engineering, material science, signal processing, neuroscience and social psychology from 3 academic and 3 industrial partners across 3 EU countries to develop: 1) a new mobile and wireless dry electrode EEG system suitable for monitoring brain activity during full body movements; 2) novel body network sensors and a multimodal alignment system for simultaneously recording of neural, physiological and kinematic signals from two interacting subjects; 3) novel analytical solutions for motion artefact removal and multi-level analysis of multimodal data; and 4) a new research dyadic paradigm to exploit the technological advances. Result: The novel technological solutions that are being currently developed by the EMBRACE consortium will enable the study of joint action at the neural, cognitive, behavioral and social levels while the participant engages in PA (individually or in social interaction), wearing a comfortable and long-lasting acquisition system. Conclusion: A detailed characterization of the individual response to exercise will help in the optimization of exercise routines with the aim to elicit the desired physiological response to enhance brain health and prevent dementia.
https://doi.org/10.1002/alz.069057
Bad channel detection in EEG recordings. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 576
https://doi.org/10.1515/bmt-2022-2001
Novel replaceable EEG electrode system. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 575
https://doi.org/10.1515/bmt-2022-2001
Operator experience and applicability aspects of dry EEG. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 526
https://doi.org/10.1515/bmt-2022-2001
Estimation of technical confounding of the tonographic effect using a pneumatic pressure modulator. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 520
https://doi.org/10.1515/bmt-2022-2001
Feature-based differentiation of malignant melanomas, lesions and healthy skin in multiphoton tomography skin images. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 379
https://doi.org/10.1515/bmt-2022-2001
Evaluation of spatio-temporal electrocutaneous warning signals. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 328
https://doi.org/10.1515/bmt-2022-2001
Simultaneous measurement of DC-EEG and transcutaneous pCO2. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 295
https://doi.org/10.1515/bmt-2022-2001
A validation study for a consumer-grade auditory-visual stimulation device. - In: Biomedical engineering, ISSN 1862-278X, Bd. 67 (2022), S. 293
https://doi.org/10.1515/bmt-2022-2001