Goda Toshiaki, Kobayashi Junya, Ohara Nobuyuki, Ikegami Takeshi, Watanabe Kotaro, Takahashi Daisuke
Department of Vascular Neurology, National Hospital Organization Osaka Minami Medical Center, 2-1 Kidohigashi-machi, Kawachinagano, Osaka, Japan.
J Med Ultrason (2001). 2018 Jan;45(1):155-159. doi: 10.1007/s10396-017-0782-9. Epub 2017 Mar 14.
We report three cases in which carotid ultrasonography was useful for the diagnosis of dural arteriovenous fistula (dAVF). In all cases, dAVFs were fed by branches of the external carotid artery (ECA) and had retrograde leptomeningeal venous drainage. Carotid ultrasonography revealed high end-diastolic ratio (ED ratio) of the common carotid artery (CCA) (1.49-2.16) and low resistance index (RI) of the ECA (0.59-0.66). They were normalized after endovascular treatment (ED ratio of CCA 1.02-1.06, RI of ECA 0.75-0.87). In conclusion, high ED ratio of the CCA and low RI of the ECA might be a useful indicator for both screening and follow-up of dAVF.
我们报告了3例颈动脉超声检查对硬脑膜动静脉瘘（dAVF）诊断有用的病例。在所有病例中，dAVF均由颈外动脉（ECA）分支供血，并伴有软脑膜静脉逆流。颈动脉超声检查显示颈总动脉（CCA）舒张期末比值（ED比值）较高（1.49 - 2.16），而ECA阻力指数（RI）较低（0.59 - 0.66）。血管内治疗后这些指标恢复正常（CCA的ED比值为1.02 - 1.06，ECA的RI为0.75 - 0.87）。总之，CCA的高ED比值和ECA的低RI可能是dAVF筛查和随访的有用指标。
