Azuma Minako, Hirai Toshinori, Shigematsu Yoshinori, Kitajima Mika, Kai Yutaka, Yano Shigetoshi, Nakamura Hideo, Makino Keishi, Iryo Yasuhiko, Yamashita Yasuyuki
Department of Diagnostic Radiology,Graduate School of Medical Sciences, Kumamoto University.
Magn Reson Med Sci. 2015;14(4):285-93. doi: 10.2463/mrms.2014-0120. Epub 2015 May 19.
We compared gross characterization of intracranial dural arteriovenous fistulas (DAVFs) between unenhanced 3-tesla 3-dimensional (3D) time-of-flight (TOF) magnetic resonance angiography (MRA) and digital subtraction angiography (DSA).
We subjected 26 consecutive patients with intracranial DAVF to unenhanced 3T 3D TOF MRA and to DSA. Two independent sets of observers inspected the main arterial feeders, fistula site, and venous drainage pattern on MRA and DSA images. Interobserver and intermodality agreements were assessed by k statistics.
Interobserver agreement was excellent for fistula site (κ = 0.919; 95% confidence interval [CI], 0.805 to 1.000), good for main arterial feeders (κ = 0.711; 95% CI, 0.483 to 0.984), and very good for venous drainage (κ = 0.900; 95% CI, 0.766 to 1.000). Intermodality agreement was excellent for fistula site (κ = 0.968; 95% CI, 0.906 to 1.000) and good for main arterial feeder (κ = 0.809; 95% CI, 0.598 to 1.000) and venous drainage (κ = 0.837; 95% CI, 0.660 to 1.000).
Gross characterization of intracranial DAVF was similar for both imaging modalities, but unenhanced 3T 3D TOF MRA cannot replace DSA.
我们比较了未增强的3特斯拉三维（3D）时间飞跃（TOF）磁共振血管造影（MRA）与数字减影血管造影（DSA）对颅内硬脑膜动静脉瘘（DAVF）的大体特征描述。
我们对26例连续的颅内DAVF患者进行了未增强的3T 3D TOF MRA和DSA检查。两组独立的观察者分别在MRA和DSA图像上检查主要动脉供血支、瘘口部位和静脉引流模式。观察者间和不同检查方法间的一致性通过κ统计量进行评估。
观察者间在瘘口部位的一致性极佳（κ = 0.919；95%置信区间[CI]，0.805至1.000），在主要动脉供血支方面良好（κ = 0.711；95% CI，0.483至0.984），在静脉引流方面非常好（κ = 0.900；95% CI，0.766至1.000）。不同检查方法间在瘘口部位的一致性极佳（κ = 0.968；95% CI，0.906至1.000），在主要动脉供血支方面良好（κ = 0.809；95% CI，0.598至1.000），在静脉引流方面良好（κ = 0.837；95% CI，0.660至1.000）。
两种成像方式对颅内DAVF的大体特征描述相似，但未增强的3T 3D TOF MRA不能替代DSA。
