Phosphorus-31 NMR spectra by the linear prediction z-transform method.

T. Uchiyama, H. Minamitani, K. Ichimori, H. Nakazawa, H. Oki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The linear prediction z-transform method (LPZAR) was applied to estimate 31P NMR spectra of perfused rat hearts. The spectra obtained by the LPZAR method showed sharper peaks with less noise for phosphate concentrations than those obtained by conventional fast Fourier transform. The LPZAR method provided a better estimation of intracellular phosphate concentrations in short acquisition time experiments in which condition Fourier transform spectra are not suitable for the quantification due to the poor resolution of FFT spectra. Utilizing the LPZAR method, rapid changes in phosphoric metabolites of the heart can be monitored during ischemia followed by reperfusion.

Original languageEnglish
Pages (from-to)231-238
Number of pages8
JournalThe Tokai journal of experimental and clinical medicine
Issue number5-6
Publication statusPublished - 1991 Dec

ASJC Scopus subject areas

  • Medicine(all)


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