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Annals of Nuclear Medicine

, Volume 16, Issue 2, pp 109–115 | Cite as

Prognostic values of perfusion-metabolic mismatch in Tl-201 and BMIPP scintigraphic imaging in patients with chronic coronary artery disease and left ventricular dysfunction undergoing revascularization

  • Shigeru Furuzawa
  • Shun Ozawa
  • Kazuhiro Shimada
  • Juji Sugioka
  • Masayuki Inagaki
Original Articles

Abstract

Objectives: The aim of this study was to assess the prognostic value of the amount of perfusion-metabolic mismatch in revascularized patients with left ventricular (LV) dysfunction by means of Thallium (Tl)-201 and BMIPP imaging.Methods: Seventy-six patients with LV dysfunction and coronary artery disease underwent Tl-201 and BMIPP imaging. They were revascularized with either coronary artery bypass graft or balloon angioplasty and were entered into this study. To quantify the amount of perfusion-metabolic mismatch, SPECT images were displayed as polar maps and analyzed semiquantitatively. The patients were followed up for a mean period of 32 months for cardiac mortality and non-fatal cardiac events. Standard follow-up left ventriculography was performed 6 to 12 months after revascularization.Results: Thirty-two patients exhibited a large amount of perfusion-metabolic mismatch (≥7 segments, group A), 28 patients had a small amount of perfusion-metabolic mismatch (2 to 6 segments, group B), and 16 patients were found to have no perfusion-metabolic mismatch (group C). Similar pre-revascularization LVEF of 35±5%, 34±8% and 36±6% increased to 45±8% (p<0.0001), to 38±8% (p<0.05), and to 36±3% (n.s.), respectively, after revascularization. The functional improvement after revascularization in group A was accompanied by a low rate of cardiac events during follow-up and better cardiac event free survival as judged by the Kaplan-Meier method (p<0.05, vs. group B and C).Conclusion: In revascularized patients with severe LV dysfunction, the presence of a large amount of perfusion-metabolic mismatch evaluated by Tl-201 and BMIPP imaging identifies patients with the best prognosis.

Key words

fatty acid metabolism left ventricular dysfunction viability revascularization long-term prognosis 

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Copyright information

© Springer 2002

Authors and Affiliations

  • Shigeru Furuzawa
    • 1
  • Shun Ozawa
    • 1
  • Kazuhiro Shimada
    • 1
  • Juji Sugioka
    • 1
  • Masayuki Inagaki
    • 1
  1. 1.Division of CardiologyFunabashi Municipal Medical CenterFunabashi, ChibaJapan

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