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A Comparison Between Conventional Scintigraphy and Emission Tomography with Thallium-201 in the Detection of Myocardial Infarction: Concise Communication

Centre Jean Perrin and Hôtel-Dieu, Clermont-Ferrand, France

Correspondence: For reprints contact: J. Maublant, MD, Nuclear Medicine Div., UCLA Medical Center, Torrance, CA 90509.

ABSTRACT

We have compared emission tomography and conventional scintigraphy with thallium-201 in a series including 15 normal subjects and 64 patients showing transmural myocardial necrosis in various locations, fully documented by clinical, electrocardiographic, and enzymatic evidence. The reconstruction was derived from 32 projection images collected around the left side of the patient's chest by a rotating scintillation camera. The conventional views and the transverse, frontal, and sagittal sections were interpreted independently by two observers. The final calculated sensitivity was 89% with conventional scintigraphy and 98% with emission tomography, and the specificity was 93% in the two cases. Thus, emission tomography provides a better sensitivity and also a better interobserver agreement than conventional scintigraphy in the detection of transmural myocardial necrosis with thallium-201.