Journal article
IDENTIFICATION OF RECURRENT ISCHEMIA AFTER CORONARY-ARTERY BYPASS-SURGERY - A COMPARISON OF POSITRON EMISSION TOMOGRAPHY AND SINGLE PHOTON-EMISSION COMPUTED-TOMOGRAPHY
TH MARWICK, A LAFONT, RT GO, DA UNDERWOOD, GB SAHA, WJ MACINTYRE
INTERNATIONAL JOURNAL OF CARDIOLOGY | ELSEVIER SCI IRELAND LTD | Published : 1992
Abstract
Current techniques for the detection of recurrent coronary stenoses following bypass grafting have shown disappointing diagnostic accuracy. This study used the same dipyridamole-handgrip stress to compare the accuracy of rubidium-82 positron emission tomography and thallium-201 single photon emission computed tomography, in 50 consecutive post-bypass patients undergoing coronary arteriography at a mean interval of 6.5 years after surgery. Significant stenoses in native coronary vessels (greater than 50% diameter) or grafts (greater than 70% diameter) were defined by quantitative angiography. Forty-six patients had recurrent or residual stenoses, 43 (93%) had a perfusion defect identified by ..
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