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Philips demonstrates imaging based on magnetic traces

Posted: 01 Jul 2005 ?? ?Print Version ?Bookmark and Share

Keywords:magnetic particle imaging?

Scientists at Philips Research have demonstrated the feasibility of an imaging technique called magnetic particle imaging (MPI), a potentially valuable new imaging technique for medical and materials analysis.

Results of the work are due to be published in the June 30 edition of Nature.

The idea behind MPI is to produce spatial images by measuring the magnetic fields generated by magnetic particles in a tracer. The Philips' method generates high-resolution images at low dosages. This was achieved by combining the nonlinear magnetization curve of the small magnetic particles with an inhomogeneous magnetic field.

The researchers evaluated the new MPI technique using commercially-available magnetic tracers. Conducted on "phantom" objects, the investigations demonstrated the feasibility of MPI and showed that it has potential to be developed into an imaging method characterized by both high spatial resolution and high sensitivity, Philips said. The expected high sensitivity could mean the technique could become a valuable addition to other medical imaging.

Along with its potential in medical imaging, Philips said MPI also showed promise as an imaging technique for materials research, specifically in the investigation of cracks and cavities in insulating materials such as polymers or ceramics.

- Peter Clarke

EE Times

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