Abstract
In order to assess the effect of steroid on thallium-201 uptake by glioma,201TI single-photon emission tomography was performed before and after steroid administration in four patients with recurrent malignant glioma. After steroid administration the201Tl index, expressed as the ratio of201Tl uptake in the tumour to that in the contralateral cerebral hemisphere, was 0.77±0.11 of the value before steroid (mean±SD:P<0.05 by pairedt test). The201Tl index has been used as a possible indicator for the differentiation of malignant gliomas from relatively benign tumours or radiation necrosis. The present results indicate that the effect of steroid has to be taken into account when semi-quantitative analysis, e.g. by means of the201Tl index, is used in patients with brain tumours.
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Namba, H., Togawa, T., Yui, N. et al. The effect of steroid on thallium-201 uptake by malignant gliomas. Eur J Nucl Med 23, 991–992 (1996). https://doi.org/10.1007/BF01084377
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DOI: https://doi.org/10.1007/BF01084377