Maiuri F, Iaconetta G, de Divitiis O, Cirillo S, Di Salle F, De Caro M L
Institute of Neurosurgery, School of Medicine, Clinica Neurochirurgica, Facoltá di Medina e Chiruriga, Universita degli Studi Federico II, Naples, Italy.
Eur J Radiol. 1999 Jul;31(1):69-75. doi: 10.1016/s0720-048x(98)00083-7.
The authors have examined the relationship between magnetic resonance imaging (MRI) and histopathological features in 35 surgically verified intracranial meningiomas. Tumor signals on T1-weighted images were rather similar regardless of the histologic subtype of the tumors. On T2-weighted images, hypointense meningiomas were mainly fibroblastic and hyperintense tumors were mainly syncytial and angioblastic, and partly transitional. Isointense tumors were mainly transitional and partly fibroblastic and syncytial. The authors conclude that the signal intensity of the MRI may be useful in the preoperative characterization of intracranial meningiomas. T1-weighted images may predict the presence of cysts and intratumoral blood vessels; whereas T2-weighted images can give information about histological subtype, vascularity and consistency. Meningiomas hyperintense to the cortex on T2 are usually soft, more vascular and more frequently of syncytial or angioblastic subtype; tumors hypointense or hypo-isointense on T2 tend to have a more hard consistency and are more often of fibroblastic or transitional subtype.
作者研究了35例经手术证实的颅内脑膜瘤的磁共振成像（MRI）与组织病理学特征之间的关系。无论肿瘤的组织学亚型如何，T1加权图像上的肿瘤信号相当相似。在T2加权图像上，低信号脑膜瘤主要为纤维母细胞型，高信号肿瘤主要为合体细胞型和血管母细胞型，部分为过渡型。等信号肿瘤主要为过渡型，部分为纤维母细胞型和合体细胞型。作者得出结论，MRI的信号强度可能有助于颅内脑膜瘤的术前特征性诊断。T1加权图像可预测囊肿和肿瘤内血管的存在；而T2加权图像可提供有关组织学亚型、血管分布和质地的信息。T2上相对于皮质呈高信号的脑膜瘤通常质地柔软、血管更丰富，且更常见为合体细胞型或血管母细胞型亚型；T2上呈低信号或低等信号的肿瘤往往质地更硬，且更常为纤维母细胞型或过渡型亚型。
