著者

栗山 巧 坂井 信幸 古川 宗 大西 久美子 奥町 英世 今村 博敏 坂井 千秋

出版者

Japanese Society of Radiological Technology

雑誌

日本放射線技術學會雜誌 (ISSN:03694305)

巻号頁・発行日

vol.69, no.11, pp.1232-1240, 2013-11-20

参考文献数

15

被引用文献数

1

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<i>Background</i>: In coil embolization of neurovascular aneurysms, we have noted that few wide-necked unruptured aneurysms are successfully embolized. This prompted us to search for useful factors to assist the choice of methods of coil embolization. <i>Method</i>: We first measured aneurysm size and volume using auto measurement (NVvol) and VER (NVver). Second, we calculated the volume (NVapp) and VER (NVapp) using approximation expressions. Third, we measured the end-on view neck angle using a 3 dimensional digital subtraction angiography (3D-DSA) image. <i>Results</i>: NVvol and NVapp were correlated (<i>y</i>=0.87<i>x</i>). NVvol VER and NVapp VER approached 24% in 41 clinical cases. The dome/neck ratio averaged 1.15. Length of neck and the end-on view neck angle were significantly different between the stent-assisted group and the balloon-assisted group. NVvol and NVapp showed a good correlation with basic examination results in 41 clinical cases. <i>Conclusion</i>: The end-on view neck angle is significantly different. This boundary neck angle was 100° for the two groups. The end on-view neck angle is thus a useful factor for deciding medical treatment strategy.