Diamond quantum sensors can detect heart magnetism at room temperature without skin contact
Physicists at Johannes Gutenberg University Mainz (JGU) have developed a technology that uses quantum sensors to measure biomagnetic signals, such as heart activity. Researchers from the DIAQNOS (DIAmond-based Quantum Sensing for NeurOSurgery) flagship project, coordinated by Dr. Arne Wickenbrock in Mainz, have demonstrated the potential of quantum technology for future medical applications.
Physicists from Johannes Gutenberg University Mainz have created a quantum sensor using diamond technology to detect heart magnetism without skin contact at room temperature. The journal Science Advances published the findings. The sensor relies on nitrogen vacancies (NV) in diamonds, discovered by doctoral student Muhib Omar during his research.
The compact, room-temperature sensor opens up possibilities for improved biomagnetic signal measurement, potentially aiding in early detection of conditions like myocarditis or epilepsy. Over a decade of development work went into creating this technology. The sensor's small size and room-temperature operation make it suitable for direct use on patients' skin, enabling precise mapping of biomagnetic signals and 3D reconstruction of the heart's electrical conduction system.
However, the sensor still lags behind SQUIDs and OPMs in sensitivity and signal-to-noise ratio. Nonetheless, ongoing development could enable the addition of flux concentrators that amplify magnetic signals, bringing these quantum technologies closer to practical medical applications.
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