Angiographic classification of the inferior sagittal sinus based on the venous drainage patterns
Angiographic classification of the inferior sagittal sinus based on the venous drainage patterns
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DOI：
10.1007/s11604-021-01198-2
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发表时间：
2021-09
影响因子：
2.1
通讯作者：
Bikei Ryu;Shinsuke Sato;Tatsuki Mochizuki;S. Shima;Tatsuya Inoue;Y. Okada;Y. Niimi
中科院分区：
文献类型：
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作者：
Bikei Ryu;Shinsuke Sato;Tatsuki Mochizuki;S. Shima;Tatsuya Inoue;Y. Okada;Y. Niimi
目的下矢状窦（ISS）及其支流因其外观不显眼而很少受到关注，其解剖变异也未知。本研究旨在评估 ISS 的形态变化。材料和方法我们回顾性分析了 518 例临床上需要进行脑血管造影的患者。评估了脑静脉系统的详细血管结构，包括 ISS 及其支流，以及 ISS 的形态变化。还评估了第三上矢状窦头端 (SSS) 的异常。结果 270 名 (52.1%) 患者中可见 ISS。我们根据静脉引流模式提出了血管造影ISS分类：0型，未可视化； 1型，小型国际空间站，支流微弱； 2型，中等国际空间站，支流发达； 3型：具有发达支流的大型ISS，负责前额叶的静脉引流。每种 ISS 类型的频率如下： 0 型，248 个（47.9%）； 1型，211（40.7%）； 2型，44个（8.5%）；以及 3、15 型（2.9%）。随着 ISS 类型的增加，平均 ISS 大小显着增大 (p< 0.0001)。所有3型病例均观察到头侧第三SSS发育不全。头侧第三SSS发育不全与ISS的发育密切相关且互补。结论本研究提供了血管造影ISS分类，我们提出的血管造影ISS分类有助于更好地了解ISS解剖结构及其静脉引流模式。
PurposeThe inferior sagittal sinus (ISS) and its tributaries have received little attention because of its inconspicuous appearance, and its anatomical variations are also unknown. This study aimed to evaluate the morphological variations of the ISS.Materials and methodsWe retrospectively reviewed 518 patients in whom cerebral angiography was clinically indicated. The detailed angioarchitecture of the cerebral venous system, including the ISS and their tributaries, and the morphological variations of the ISS were evaluated. Abnormalities of the rostral third superior sagittal sinus (SSS) were also evaluated.ResultsThe ISS was visualized in 270 (52.1%) patients. We proposed an angiographic ISS classification according to the venous drainage patterns: Type 0, not visualized; Type 1, small ISS with faint tributaries; Type 2, moderate ISS with developed tributaries; and Type 3: large ISS with well-developed tributaries, which are responsible for the venous drainage of the anterior frontal lobe. The frequency of each ISS type was as follows: Type 0, 248 (47.9%); Type 1, 211 (40.7%); Type 2, 44 (8.5%); and Type 3, 15 (2.9%). The mean ISS size was significantly larger with an increase in the type of ISS (p< 0.0001). The rostral third SSS hypoplasia was observed in all cases of Type 3. The hypoplasia of the rostral third SSS and development of the ISS were strongly correlated and complementary to each other.ConclusionThis study provided the angiographic ISS classification, and our proposed angiographic ISS classification could be helpful in better understanding of the ISS anatomy and its venous drainage pattern.