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A CMOS NMR needle for probing brain physiology with high spatial and temporal resolution
Jonas Handwerker1,2, Marlon Pérez-Rodas3,4, Michael Beyerlein5
1Institute of Smart Sensors, University of Stuttgart, Stuttgart, Germany. jonas.handwerker@iis.uni-stuttgart.de.
Nature Methods
|November 27, 2019
Summary
Researchers developed a novel NMR-on-a-chip needle for enhanced brain imaging. This technology improves in vivo measurements of blood oxygenation and flow with high sensitivity and speed.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Medical Physics
Background:
- Magnetic resonance imaging (MRI) and spectroscopy (MRS) are crucial for studying brain physiology.
- Current MRI/MRS methods face limitations in spatial and temporal resolution due to low sensitivity.
Purpose of the Study:
- To develop a highly sensitive, integrated NMR system for in vivo brain measurements.
- To overcome the resolution limitations of conventional MRI/MRS.
Main Methods:
- Development of a monolithically integrated NMR-on-a-chip needle.
- Incorporation of an ultra-sensitive 300 µm NMR coil and a complete NMR transceiver.
- In vivo measurements of blood oxygenation and flow in nanoliter volumes.
Main Results:
- Achieved high-sensitivity measurements in nanoliter volumes.
- Enabled in vivo assessment of blood oxygenation and flow.
- Demonstrated a sampling rate of 200 Hz for rapid physiological monitoring.
Conclusions:
- The NMR-on-a-chip needle significantly enhances sensitivity for in vivo brain studies.
- This technology offers improved spatial and temporal resolution for physiological measurements.
- Potential for advanced diagnostics and research in neuroscience.
