Abstract
A novel, multipurpose device has been designed that allows thallium activity to be continuously studied from a given lung area at rest and at peak exercise. The information gained from this technique proves to be relevant and reliable because lung thallium activity is displayed in real time and the interpretation of thallium distribution is not based on qualitative or quantitative comparison with that in the myocardium or mediastinum. The time-activity curves obtained in our study group are reported and the relation of peak activity to plateau activity (peak/plateau ratio) is proposed as an index that is easy to obtain for identifying patients with normal and impaired left ventricular function.
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