Apaydin F Demir, Yalçinoğlu Orhan, Yildiz Altan, Arpaci Taner, Duce Meltem Nass, Ozer Caner, Bagdatoglu Celal
Department of Radiology, Faculty of Medicine, Mersin University, Mersin, Turkey.
J Clin Neurosci. 2003 Jan;10(1):132-4. doi: 10.1016/s0967-5868(02)00112-1.
Arachnoid granulations show typical imaging features that allow their distinction from dural sinus thrombosis and intrasinus tumor. These features include a mid-lateral transverse sinus location, focality, common adjacent entering superficial veins, origin of attachment, low density on computed tomography (CT), isointensity-hypointensity on T1-weighted magnetic resonance imaging (MRI) and hyperintensity on T2-weighted MRI. We report the CT and MRI findings of incidentally detected bilateral arachnoid granulations in the transverse sinuses of a patient with ocular melanoma.
蛛网膜颗粒具有典型的影像学特征，使其能够与硬脑膜窦血栓形成和窦内肿瘤相鉴别。这些特征包括位于横窦中外侧、局灶性、常见相邻的浅表静脉汇入、附着起源、计算机断层扫描（CT）上的低密度、T1加权磁共振成像（MRI）上的等信号-低信号以及T2加权MRI上的高信号。我们报告了1例眼黑色素瘤患者横窦内偶然发现的双侧蛛网膜颗粒的CT和MRI表现。
