Promising New MRI Technique Provides Insight Into a Stroke

by User Not Found | Nov 13, 2014
Researchers from several institutions have used a 21-tesla preclinical MR spectroscopy scanner to develop a new technique for evaluating patients for stroke and possibly neurodegenerative diseases.

Researchers from several institutions have used a 21-tesla preclinical MR spectroscopy scanner to develop a new technique for evaluating patients for stroke and possibly neurodegenerative diseases. They now believe the protocol could be migrated to 3- and 7-tesla MRI scanners being used clinically.

The group from the National High Magnetic Field Laboratory at Florida State University (FSU), the Champalimaud Center in Portugal, and the Weizmann Institute of Science in Israel has crafted an imaging sequence that targets specific metabolites in certain regions of the brain to determine their concentration as well as other important pieces of information. The key piece of technology is FSU's 900-MHz, 21.1-tesla nuclear MR magnet system, which can visualize chemical signatures of metabolites in 125-microliter volumes. The technique details metabolites using a relaxation-enhanced MR spectroscopy (MRS) approach that accentuates the metabolites with the very high magnetic field. “The truly revolutionary part is that we can focus our attention and selectively excite certain regions of the brain by focusing on certain frequencies,” said Samuel Grant, PhD, associate professor of chemical and biomedical engineering and MRI user program director.

 
 
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