VALUE OF ANTIMYOSIN MONOCLONAL-ANTIBODY SCINTIGRAPHY IN THE DIAGNOSISOF NON-Q-WAVE MYOCARDIAL-INFARCTION

A 53 year old woman developed chest pain with transient anterior subep icardial ischaemic ECG changes and a mild increase in serum myocardial enzyme concentrations. She was admitted to hospital some time later b ut there were no electrocardiographic signs of infarction. Echocardiog raphy was considered to be normal. Coronary angiography showed no sign ificant stenosis and there were no segmental wall motion abnormalities on left ventriculography. The diagnosis of a non-Q wave infarct was c onfirmed by myocardial scintigraphy using antimyosin monoclonal antibo dies labelled with Indium 111. The site and size of the necrosis were also determined by this non-invasive investigation.