thallium-201 spect for pulmonary tumors

this study was undertaken to examine the ability of spect in differentiation of a pulmonary lesion suspecions of lung cancr. a total of 170 patients with suspected lung cancer were studied. a dose of tl-201 chloride {148-296 mbq) was injected intravenously and tomographic early and delayed scans were obtained at 15 miniutes and 3 hours post injection, respectively. delayed tl-201 spect visulized all of the 147 malignant pulmonary lesions which were clearer than those obtained by the early spect. tl-201 spect seems to be a useful method for assessing pulmonary tumors and it offeres the retention index useful for differentiating malignant from benign lesions, and mediastinal involvement from lung cancer.