Altered phosphate metabolism in myocardial infarction: P-31 MR spectroscopy.

Published

Journal Article

The high-energy myocardial phosphate metabolism of four patients with acute anterior myocardial infarction after coronary angioplasty and drug therapy was evaluated with cardiac-gated phosphorus magnetic resonance (MR) depth-resolved surface coil spectroscopy (DRESS) 5-9 days after the onset of symptoms. Significant reductions (about threefold) in the phosphocreatine (PCr) to inorganic phosphate (Pi) ratio and elevations in the Pi to adenosine triphosphate (ATP) ratio were observed in endocardially or transmurally derived MR spectra when compared with values from epicardially displaced spectra and values from seven healthy volunteers (P less than .05). High-energy phosphate metabolites and Pi ratios did not vary significantly during the cardiac cycle in healthy volunteers. However, contamination of Pi resonances by phosphomonoester components, including blood 2,3-diphosphoglycerate, precluded accurate spectral quantification of Pi and pH. The results indicate that localized P-31 MR spectroscopy may be used to directly assess cellular energy reserve in clinical myocardial infarction and to evaluate metabolic response to interventions.

Full Text

Duke Authors

Cited Authors

  • Bottomley, PA; Herfkens, RJ; Smith, LS; Bashore, TM

Published Date

  • December 1987

Published In

Volume / Issue

  • 165 / 3

Start / End Page

  • 703 - 707

PubMed ID

  • 2961004

Pubmed Central ID

  • 2961004

International Standard Serial Number (ISSN)

  • 0033-8419

Digital Object Identifier (DOI)

  • 10.1148/radiology.165.3.2961004

Language

  • eng

Conference Location

  • United States