the clinical value of myocardial scintigraphy with 99mtc-pyrophosphate in conjunction with bicycle ergometry was assessed through the correlation of the latter 's results with the clinical course of coronary heart disease over 1 year in 21 patients with first myocardial infarction during its early healing stage and 17 anginal patients without a history of myocardial infarction .
C0018787
heart
C0155668
history of myocardial infarction