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Picture this: FSU professor's research could lead to vastly improved medical imaging

TALLAHASSEE, Fla. -- Magnetic resonance imaging, or MRI, has revolutionized health care, providing doctors with a highly accurate, non-invasive tool for diagnosing cancer, injuries and other maladies within the human body. Now, a Florida State University researcher has collaborated in a research project that could lead to ways of producing even sharper medical images.

Naresh Dalal, the Dirac Professor of Chemistry and Biochemistry at FSU, recently conducted experiments with other researchers from FSU, the University of Colorado and the National Institute of Standards and Technology that uncovered unique properties in a molecular magnet properties that could significantly increase the resolution of MRIs. Their paper, "Efficacy of the Single-Molecule Magnet Fe8 for Magnetic Resonance Imaging Contrast Agent Over a Broad Range of Concentration," was published in the current issue of Polyhedron, a rigorously peer-reviewed science journal.

"There are continual efforts to enhance the level of image clarity found in today's MRI devices," Dalal said. "MRIs utilize injectable dyes, but those in current use, while easy to manufacture, offer a relatively low contrast. Our experiments show that a class of materials known as single-molecule magnets might produce greater contrast in medical imaging, meaning MRIs would be much more accurate."

Working at FSU and the National High Magnetic Field Laboratory, Dalal and another FSU researcher, chemistry graduate teaching assistant Vasanth Ramachandran, were able to synthesize a substance known as Fe8 that is one of the strongest magnets known.

"Fe8 is a molecule made up of eight iron ions that form a tight molecular bond," Dalal said. "It has a powerful magnetic field, which is obviously important in generating a very clear image with an MRI device. What's more, Fe8 is non-toxic and water-soluble, making it safe for injection into the body."

Molecular magnets such as Fe8
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Contact: Naresh Dalal
dalal@chem.fsu.edu
850-644-3398
Florida State University
13-Feb-2007


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