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Issue 13, 2011
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Miniature magnetic resonance system for point-of-care diagnostics

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We have developed a next generation, miniaturized platform to diagnose disease at the point-of-care using diagnostic magnetic resonance (DMR-3). Utilizing a rapidly growing library of functionalized magnetic nanoparticles, DMR has previously been demonstrated as a versatile tool to quantitatively and rapidly detect disease biomarkers in unprocessed biological samples. A major hurdle for bringing DMR to the point-of-care has been its sensitivity to temperature variation. As an alternative to costly and bulky mechanisms to control temperature, we have implemented an automated feedback system to track and compensate for the temperature drift, which enables reliable and robust DMR measurements in realistic clinical environments (4–50 °C). Furthermore, the new system interfaces with a mobile device to facilitate system control and data sharing over wireless networks. With such features, the DMR-3 platform can function as a self-contained laboratory even in resource-limited, remote settings. The clinical potential of the new system is demonstrated by detecting trace amounts of proteins and as few as 10 bacteria (Staphylococcus aureus) in a short time frame (<30 min).

Graphical abstract: Miniature magnetic resonance system for point-of-care diagnostics

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Publication details

The article was received on 01 Mar 2011, accepted on 06 Apr 2011 and first published on 05 May 2011

Article type: Technical Note
DOI: 10.1039/C1LC20177H
Lab Chip, 2011,11, 2282-2287

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    Miniature magnetic resonance system for point-of-care diagnostics

    D. Issadore, C. Min, M. Liong, J. Chung, R. Weissleder and H. Lee, Lab Chip, 2011, 11, 2282
    DOI: 10.1039/C1LC20177H

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