Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society · 1994
Magnetic resonance characteristics of meningiomas arising from the falcotentorial junction.
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Asari S, Yabuno N, Ohmoto T
Аннотация
We report the magnetic resonance features of meningiomas at the falcotentorial junction in six patients. Three tumors showed several characteristics on magnetic resonance images. They demonstrated hypo- or isointensity on T1-weighted images and iso- or hyperintensity on T2-weighted images. The degree of contrast between tumor and brain parenchyma, however, was less marked. The tumors often had a mottled appearance on T2-weighted images owing to their hypervascularity. All of the tumors had a peritumoral rim, and no edema was seen in adjacent brain parenchyma. With the injection of gadolinium, the tumors in all patients markedly enhanced; the adjacent dura was enhanced in four patients.