Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Medicine (Baltimore). 2021 Jan 15;100(2):e24133. doi: 10.1097/MD.0000000000024133.
To analyze the correlation between aneurysm wall enhancement (AWE) values and early and late sac shrinkage after endovascular aneurysm repair (EVAR).We retrospectively analyzed 28 patients who underwent EVAR for abdominal aortic aneurysms (AAA) using a bifurcated main body stent graft. The value of AWE in the slice of the maximum AAA diameter was measured using a volumetric analysis of computed tomography images. Sac measurements before EVAR and more than 10 months after EVAR were compared, and the maximum sac shrinkage rate was calculated.The AWE value immediately after (4 to 7 days) EVAR correlated positively with the sac shrinkage rate (R2 = 0.0139). The AWE value at 6 months after EVAR was also strongly correlated with the sac shrinkage rate (R2 = 0.4982).Higher AWE values at 6 months after EVAR were strongly associated with the sac volume shrinkage rate. High AWE values may be a predictive factor for sac shrinkage and may aid in the selection of the appropriate clinical strategy after EVAR.
分析血管内动脉瘤修复（EVAR）后动脉瘤壁增强（AWE）值与早期和晚期瘤腔缩小之间的相关性。我们回顾性分析了 28 例接受分叉主体支架移植物治疗腹主动脉瘤（AAA）的患者。使用 CT 图像容积分析测量最大 AAA 直径切片中的 AWE 值。比较 EVAR 前和 EVAR 后 10 个月以上的瘤腔测量值，并计算最大瘤腔缩小率。EVAR 后即刻（4-7 天）的 AWE 值与瘤腔缩小率呈正相关（R2=0.0139）。EVAR 后 6 个月的 AWE 值也与瘤腔缩小率呈强相关（R2=0.4982）。EVAR 后 6 个月的 AWE 值越高，与瘤腔体积缩小率的相关性越强。高 AWE 值可能是瘤腔缩小的预测因素，并有助于在 EVAR 后选择合适的临床策略。
