Journal article

MYOCARDIAL PERFUSION IMAGING WITH POSITRON EMISSION TOMOGRAPHY AND SINGLE PHOTON-EMISSION COMPUTED-TOMOGRAPHY - FREQUENCY AND CAUSES OF DISPARATE RESULTS

TH MARWICK, RT GO, WJ MACINTYRE, GB SAHA, DA UNDERWOOD

EUROPEAN HEART JOURNAL | OXFORD UNIV PRESS | Published : 1991

Abstract

The purpose of this study was to compare rubidium-82 PET with thallium-201 SPECT imaging in 150 patients. Both techniques followed a single dipyridamole-handgrip stress, and images were displayed using the same 3-dimensional format and quantitative colour scale. Coronary arteriography was employed to assign the correct diagnosis in situations of disparity. Results of PET and SPECT were at least partially concordant in 110 patients (73%), although 22 had more than one defect. A reversible perfusion defect was identified in 60 patients, but the scans were concordant in only 20 (33%). These disparities were chiefly due to false-negative SPECT imaging (22 patients, 55%), and probable delayed tha..

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