Dural Venous Sinus Variations Observed in Magnetic Resonance Venography at a Tertiary Care Hospital: An Observational Study.

JNMA; journal of the Nepal Medical Association Pub Date : 2024-11-01 Epub Date: 2024-11-30 DOI:10.31729/jnma.8795

Sharma Paudel, Ramswarth Sah, Rakesh Kumar Singh, Prakash Kayastha, Shailendra Katwal

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Abstract

Introduction: The dural venous system, composed of various sinuses, plays a crucial role in draining deoxygenated blood from the central nervous system. Understanding its anatomical variations is essential to differentiate it from pathological conditions like cerebral venous sinus thrombosis. This study aims to evaluate the anatomical variations of the dural venous sinuses using Magnetic Resonance Venography.

Methods: An observational, cross-sectional study was performed in the Department of Radiology from September 2023 to March 2024 after the approval by the Institutional Review Committee (Reference number: 149/080/081(6-11)E2). Magnetic Resonance Venography of 109 adult patients was performed using a 1.5 Tesla MRI scanner. Diameters of the superior sagittal sinus, straight sinus, and transverse sinuses were measured. Variations in transverse sinuses, straight sinus, and confluence were categorized and analyzed.

Results: The study included 52 (47.70%) male and 57 (52.30%) female, with median age of 42 (IQR: 30.5 - 56) years. The superior sagittal sinus had the diameter of 6.4 ± 1 mm. Symmetric transverse sinus variant seen was in 80 (73.39%) patients, and left transverse sinus hypoplasia was seen in 20 (18.35%) patients. Variations in the straight sinus and confluence were also documented with a true confluence (type III) was seen in 71 (65.10%) patients.

Conclusions: Anatomical variations of the dural venous sinuses as observed in 1.5 Tesla MRI was quite common.

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在三级保健医院磁共振静脉造影中观察到的硬脑膜静脉窦变化：一项观察性研究。

硬脑膜静脉系统由各种窦组成，在从中枢神经系统排出缺氧血中起着至关重要的作用。了解其解剖学变异是必要的，以区分其病理条件，如脑静脉窦血栓形成。本研究的目的是评估硬脑膜静脉窦的解剖变化，利用磁共振静脉造影。方法：经机构审查委员会批准（参考编号：149/080/081(6-11)E2），于2023年9月至2024年3月在放射科进行了一项观察性横断面研究。对109例成人患者进行1.5特斯拉MRI扫描。测量上矢状窦、直窦和横窦的直径。对横窦、直窦和汇合处的变化进行分类和分析。结果：男性52例（47.70%），女性57例（52.30%），中位年龄42岁（IQR: 30.5 ~ 56）岁。上矢状窦直径6.4±1mm。对称横窦变异80例（73.39%），左横窦发育不全20例（18.35%）。直窦和汇合处的变化也有记录，71例（65.10%）患者出现真正的汇合处（III型）。结论：硬脑膜静脉窦在1.5特斯拉MRI上的解剖变异是很常见的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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JNMA; journal of the Nepal Medical Association

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