Toro V E, Geyer C A, Sherman J L, Parisi J E, Brantley M J
Department of Radiology, Walter Reed Army Medical Center, Washington, DC.
J Comput Assist Tomogr. 1988 Nov-Dec;12(6):935-40. doi: 10.1097/00004728-198811000-00005.
Seven patients with suspected cerebral venous angioma studied by either CT or angiography were imaged with magnetic resonance. Six of seven cases demonstrated a stellate appearance on contrast enhanced CT. In two patients this finding was verified by angiography. Flow void was identified on both T1- and T2-weighted pulse sequences. In one patient a field echo sequence demonstrated high intensity signal within the venous angioma. Magnetic resonance proved superior to CT in the identification of these lesions. A stellate configuration with an emanating transcortical vein and centrifugal drainage (transcortical venous flow) from the angioma into a sinus was present in all cases. Centripetal drainage via thalamostriate and internal cerebral veins was not seen. There was no evidence of mass effect, scar, or hemorrhage. Four of the angiomas were located in a frontal lobe and three in a cerebellar hemisphere. This distribution of the lesions is similar to that reported in the literature in which the frontal lobe is the most common location followed by the cerebellar hemisphere. An embryological explanation is cited and supported by a review of the literature.
对7例疑似脑静脉血管瘤的患者进行了CT或血管造影检查，并采用磁共振成像。7例中有6例在增强CT上表现为星状外观。其中2例经血管造影证实了这一发现。在T1加权和T2加权脉冲序列上均发现了流空现象。1例患者的场回波序列显示静脉血管瘤内有高强度信号。磁共振成像在识别这些病变方面优于CT。所有病例均呈现星状结构，有一条发出的经皮质静脉，以及从血管瘤向静脉窦的离心引流（经皮质静脉血流）。未见到通过丘脑纹状体静脉和大脑内静脉的向心性引流。没有占位效应、瘢痕或出血的证据。4例血管瘤位于额叶，3例位于小脑半球。这种病变分布与文献报道相似，其中额叶是最常见的部位，其次是小脑半球。文中引用了胚胎学解释并通过文献综述予以支持。
