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Home > Press > Pocket-sized magnetic resonance imaging

A portable magnetic resonance spectrometer (back right) allows investigations to be performed in the field. The magnet is housed in the circular base (in the foreground).
© Fraunhofer IBMT
A portable magnetic resonance spectrometer (back right) allows investigations to be performed in the field. The magnet is housed in the circular base (in the foreground). © Fraunhofer IBMT

Abstract:
The term "MRI scan" brings to mind the gigantic, expensive machines that are installed in hospitals. But research scientists have now developed small portable MRI scanners that perform their services in the field: for instance to examine ice cores.

Pocket-sized magnetic resonance imaging

Germany | Posted on July 2nd, 2008

Magnetic resonance imaging yields deep insights - into the atomic structure of a biomolecule, for instance, or into the tissues of a patient's body. Magnetic resonance imaging is one of the most important imaging methods used in medicine. However, MRI scanning has one major disadvantage: The machines are huge and extremely expensive, and almost impossible to transport.

The Magnetic Resonance working group at the Fraunhofer Institute for Biomedical Technology Engineering IBMT in Sankt Ingbert has made magnetic resonance imaging mobile. They collaborated with the New Zealand company Magritek to develop small portable devices. Dr. Frank Volke, head of the Magnetic Resonance working group, explains the core technology: "Instead of the large superconducting magnets that have to be cooled with liquid helium and nitrogen, extra-strong permanent magnets are installed in our devices. There is no need for cooling anymore." To make this possible, several permanent magnets are so arranged that the magnetic field lines overlap to form a homogeneous field. In this way, the developers have succeeded in developing small, less expensive, and above all portable magnetic resonance spectrometers that can even be powered by batteries.

Physicians and researchers alike can benefit from the mobile pocketsized nuclear magnetic resonance (NMR) devices: The first "Kea NMR moles" are already in use in the Antarctic, helping researchers to study the effects of environmental change by analyzing the structure of ice masses or drilled ice cores. Nevertheless, they cannot replace clinical MRI scanners for whole human body studies. There are many more potential applications for such devices, including delivering important data - directly and online - during production processes. Industrial manufacturers of sausages, cheese or candies, for instance, can use them to analyze the fat or water content of their food products. The spectrometers can also be employed to measure the humidity of materials, characterize the molecular structure of polymers, or determine the quality of trees for wood production. Together with Magritek, the Fraunhofer researchers provide technical instruction for users in Germany and Europe and support them with device maintenance.

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About Fraunhofer-Gesellschaft
The Fraunhofer-Gesellschaft undertakes applied research of direct utility to private and public enterprise and of wide benefit to society.

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* Industry
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Facts and Figures at a Glance:

* More than 80 research units, including 56 Fraunhofer Institutes, at 40 different locations in Germany

* The majority of the 13, 000 staff are qualified scientists and engineers

* € 1.3 billion annual research budget totaling.
Of this sum, more than 1 billion euros is generated through contract research. Two thirds of the research revenue is derived from contracts with industry and from publicly financed research projects. Only one third is contributed by the German federal and Länder governments in the form of institutional funding

* Research centers and representative offices in Europe, USA, Asia and in the Middle East

For more information, please click here

Contacts:
Dr. Frank Volke
Phone: +49 6894 980-405
Fax: +49 6894 980-400
Fraunhofer-Institut für Biomedizinische Technik
IBMT
Ensheimer Straße 48
66386 St. Ingbert

Copyright © Fraunhofer-Gesellschaft

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