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Triple-quantum-coherence-filtered imaging of sodium ions in vivo at 4.7 tesla
R H Griffey1, B V Griffey, N A Matwiyoff
1Center for Non-invasive Diagnosis, University of New Mexico School of Medicine, Albuquerque 87131.
Magnetic Resonance in Medicine
|February 1, 1990
Abstract:
The tissue distribution of sodium ions which generate triple-quantum coherence (TQC) in vivo is determined from images. A technique for filtering conventional sodium images, so that signal is obtained only from sodium ions which have a correlation time appropriate for producing TQC, is described. The utility of TQC-filtered sodium images is demonstrated in a study of tumors implanted in a nude rat model, where the intensity of the TQC signal from sodium ions in the growing margin of the tumor is observed to be 200-250% greater than that from surrounding tissue.