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Journal of Child Neurology
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Correlation Between Gadolinium-Diethylenetriaminepentaacetic Acid Contrast Enhancement and Thallium-201 Chloride Uptake in Pediatric Brainstem Glioma

Bernard L. Maria, MD, MBA

Neuro-Oncology Program and the Department of Pediatrics University of Florida College of Medicine, Gainesville, FL

Walter B. Drane, MD

Department of Nuclear Medicine University of Florida College of Medicine, Gainesville, FL, Department of Radiology University of Florida College of Medicine, Gainesville, FL

Ronald J. Quisling, MD

Department of Radiology University of Florida College of Medicine, Gainesville, FL

Karin B. N. Hoang, AB

Neuro-Oncology Program and the Department of Pediatrics University of Florida College of Medicine, Gainesville, FL

We previously showed that thallium-201 (201Tl) chloride is accumulated in over 75% of brain tumors, including brainstem gliomas. The imaging of 201Tl with single photon emission computed tomography (SPECT) may require an abnormal increase in permeability of tumor vessels to allow penetration of the blood-brain barrier. To test this hypothesis, we evaluated the correlation between gadolinium enhancement and the degree of 201T1 uptake on SPECT and the contributions of either gadolinium enhancement or 201Tl uptake to the prognosis in children with brainstem gliomas. Forty-two sets of paired SPECT scans and magnetic resonance imaging (MRI) scans were obtained longitudinally in 13 cases. Altogether, 31 of 42 pairs (74%) of scans showed concordance between the presence of gadolinium enhancement and 201Tl uptake. There were no cases that demonstrated 201Tl uptake but lacked gadolinium enhancement. The results indicate that 201Tl SPECT is of value primarily when brainstem tumors have vessels that are demonstrably permeable to gadolinium, prior to or as a result of radiotherapy. (J Child Neurol 1997; 12:341-348).

Journal of Child Neurology, Vol. 12, No. 6, 341-348 (1997)
DOI: 10.1177/088307389701200601
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 Arch. Dis. Child.Home page
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