Kuriyama Takumi, Sakai Nobuyuki, Furukawa Hajime, Oonishi Kumiko, Okumachi Hideyo, Imamura Hirotoshi, Sakai Chiaki
Radiation Technology Department, Institute of Biomedical Research and Innovation.
Nihon Hoshasen Gijutsu Gakkai Zasshi. 2013 Nov;69(11):1232-40. doi: 10.6009/jjrt.2013_jsrt_69.11.1232.
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.
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.
NVvol and NVapp were correlated (y=0.87x). 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.
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.
在神经血管动脉瘤的弹簧圈栓塞治疗中，我们注意到很少有宽颈未破裂动脉瘤能成功栓塞。这促使我们寻找有助于选择弹簧圈栓塞方法的有用因素。
我们首先使用自动测量（NVvol）和VER（NVver）测量动脉瘤大小和体积。其次，我们使用近似表达式计算体积（NVapp）和VER（NVapp）。第三，我们使用三维数字减影血管造影（3D-DSA）图像测量颈端视图角度。
NVvol和NVapp相关（y = 0.87x）。在41例临床病例中，NVvol VER和NVapp VER接近24%。瘤顶/颈比值平均为1.15。支架辅助组和球囊辅助组之间的颈长度和颈端视图角度有显著差异。在41例临床病例中，NVvol和NVapp与基本检查结果显示出良好的相关性。
颈端视图角度有显著差异。两组的这个边界颈角度为100°。因此，颈端视图角度是决定治疗策略的一个有用因素。
