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Automated ejection fraction determination from gated myocardial FDG-PET data.

A T Willemsen1, H J Siebelink, P K Blanksma

  • 1PET-Center, Groningen University Hospital, The Netherlands. a.t.m.willemsen@pet.azg.nl

Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology
|December 23, 1999
PubMed
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Automated calculation of left ventricular ejection fraction from gated myocardial positron emission tomography (PET) shows potential, correlating highly with equilibrium radionuclide angiography (ERNA). Further calibration is needed for clinical use.

Area of Science:

  • Cardiology
  • Nuclear Medicine
  • Medical Imaging

Background:

  • Assessing left ventricular ejection fraction (LVEF) is crucial for cardiac function evaluation.
  • Gated myocardial positron emission tomography (PET) offers a potential imaging modality for LVEF assessment.

Purpose of the Study:

  • To evaluate the potential of automated LVEF calculation using gated myocardial PET.
  • To compare automated LVEF results from PET with a gold standard method.

Main Methods:

  • Retrospective analysis of 20 patients with gated fluorine-18 deoxyglucose (FDG)-PET and equilibrium radionuclide angiography (ERNA) data.
  • Analysis of gated PET data using two software programs: quantitative gated single-photon emission computed tomography (QGS) and functional polarmap (FPM).
  • ERNA data served as the reference standard for comparison.

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Main Results:

  • Both QGS and FPM showed high correlation with ERNA for LVEF (r=0.86 and r=0.84, respectively).
  • The correlation between QGS and FPM LVEF results was very high (r=0.97).
  • Systematic differences were observed between methods, indicating potential influence of left ventricular volume errors.

Conclusions:

  • Automated LVEF determination from gated PET data demonstrates significant potential.
  • PET-derived LVEF results are highly correlated with ERNA.
  • Additional calibration is required to establish the accuracy and clinical applicability of these automated methods.