Neurosonology:神経超音波医学
Print ISSN : 0917-074X
ISSN-L : 0917-074X
原著論文
頸部エコー検査による硬膜動静脈瘻の治療前後の評価
久枝 恵美子嶋田 裕史緒方 利安東 登志夫山下 孝明松永 彰井上 亨
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2017 年 30 巻 3 号 p. 129-132

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Dural arteriovenous fistula was examined by carotid ultrasonography (CUS) in five patients with cavernous sinus dural arteriovenous fistula (CS-dAVF) and 14 patients with transverse sigmoid sinus dural arteriovenous fistula (TS-dAVF). All 19 patients were diagnosed using digital subtraction angiography. CUS parameters, including the end-diastolic ratio of the common carotid artery (CCA-ED ratio), end-diastolic flow velocity of the external carotid artery (ECA EDV), and the resistance index of the external carotid artery (ECA RI), were examined before and after treatment of CS-dAVF and TS-dAVF. A comparison of the CUS parameters before treatment showed increases in the CCA-ED ratio and ECA EDV and a decrease in the ECA RI in TS-dAVF patients. After treatment, the difference in the changes in TS-dAVF vs. CS-dAVF patients was significant. Thus, compared with before treatment, the CCA-ED ratio (pre: 1.80 vs. post: 1.38, p = 0.005) and ECA EDV (cm/s) (54.4 vs. 29.9, p = 0.001) decreased significantly in TS-dAVF patients, whereas the ECA RI was significantly higher in both TS-dAVF (0.60 vs. 0.72, p = 0.005) and CS-dAVF (0.76 vs. 0.85, p = 0.043) patients. These results demonstrated the utility of CUS in estimating the therapeutic effect of dAVF, especially in patients with TS-dAVF.

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