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Gated fluorine 18 fluorodeoxyglucose positron emission tomography: determination of global and regional left
George Saab1, Robert A Dekemp, Heikki Ukkonen
1Cardiac PET Center, Division of Cardiology, University of Ottawa Heart Institute, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
Background:
Our objectives were to investigate the accuracy of global and regional left ventricular (LV) function parameters determined from gated fluorine 18 deoxyglucose (FDG) positron emission tomography (PET) and to determine whether this approach complements viability imaging data for tissue characterization. Nongated FDG-PET is a clinical standard for viability imaging, but LV function is often determined with other techniques, which increases patient burden, expenditure, and co-registration errors. Better tissue characterization may be achieved if data were acquired with one test. Methods and results Forty-eight patients with LV dysfunction (including 35 with ejection fraction [EF]
Conclusion:
Gated FDG-PET accurately measures global LV function. Regional function can also be determined with reasonable accuracy. This approach also provides precise co-registration of function with metabolic information and thus improved tissue characterization of the myocardium. Gated FDG-PET has the potential to assist in optimizing management of this patient population.