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European Heart Journal 1988 9(1):68-72;
Copyright © 1988 by the European Society of Cardiology.
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© 1988 The European Society of Cardiology

Diagnostic value of stress radionuclide angiography in coronary artery disease: a comparison of differentinterpretation criteria

J. OUZAN, J. C. LIEHN, E. BERUBEN, J. ELAERTS, J. VALEYRE and A. BAJOLET

Service de Cardiologie, CHU and Institut Jean Godinot Reims, France

Received 9 April 1987; revised 26 June 1987; .

address for correspondence: Dr James Ouzan, Service de Cardiologie, CHR. F 51092 Reims Cedex. France

Abstract

In order to compare different criteria in the interpretation of stress radionuclide angiography (SRNA) 96 patients with suspected coronary artery disease (CAD) were investigated by both SRNA and coronary arteriography. The result of coronary arteriography was taken as the gold standard for the diagnosis of CA D. Left ventricular ejection fraction (LVEF) was measured at each step of the stress study using the equilibrium radionuclide technique. The diagnostic value of eight interpretation criteria based on the evolution of global LVEF during stress were compared with each other, using the ROC technique. The best diagnostic criterion proved to be the normalized increase of LVEF proposed by Goris. The most commonly used criteria, L VEF increase and LVEF measured at maximal exercise, were not optimal. In the whole population of patients, the best criterion had a sensitivity of85% for a specificity of80% and a specificity of 83% for a sensitivity of 80%. In the population. following exclusion of patients with preceding myocardial infarction, the specificity was 74% for a sensitivity of 80% and a sensitivity of 74% for a specificity of 80%. Thus, the choice of interpretation criteria is very important in order to optimize the sensitivity and specificity of this diagnostic test.

Key Words: Stress radionuclide angiography • receiver operating characteristic curves


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