Radionuclide Sinography: Diagnosis of Lateral Sinus Thrombosis By Dynamic and Static Brain Imaging

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Abstract
Patients (4) with lateral sinus thrombosis were studied by radionuclide (RN) dynamic studies and RN static brain scans. There was abrupt termination of RN activity in the midportion of a lateral sinus (stump sign); nonvisualization on dynamic, increased visualization on static images ipsilateral to a prominent sinus groove on a plain skull radiograph; and increased activity on static images with nonfilling on angiography. RN demonstration of the stump sign is pathognomonic of lateral sinus occlusion; the latter 2 patterns require radiographic demonstration of an ipsilateral sinus groove or angiography for significance.