Prediction of aortoiliac stent-graft length: comparison of measurement methods.
Prediction of aortoiliac stent-graft length: comparison of measurement methods.
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DOI：
10.1148/radiology.220.2.r01au21475
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发表时间：
2001-08
期刊：
影响因子：
19.7
通讯作者：
Manfred Tillich;Bradley B. Hill;David S. Paik;Kerstin Petz;Sandy Napel;Christopher K. Zarins;Geoffrey D. Rubin
中科院分区：
文献类型：
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作者：
Manfred Tillich;Bradley B. Hill;David S. Paik;Kerstin Petz;Sandy Napel;Christopher K. Zarins;Geoffrey D. Rubin
目的确定螺旋计算机断层扫描（CT）、CT血管造影的投影血管造影和血管内超声撤回（IUW）长度测量用于预测适当髂动脉覆膜支架长度的准确性。材料与方法分析了33例患者腹主动脉瘤腔内修复术前后的螺旋CT数据（Aneuryx覆膜支架，n = 31; Excluder覆膜支架，n = 2）。计算髂总动脉中线长度（MLC）和髂总动脉距离血管壁至少一个半径的最短路径（SP）。根据CT数据模拟常规血管造影测量，将三维MLC的长度投影到四个标准观察平面上。将24例患者的这些展开前长度和IUW长度与覆膜支架展开后的髂动脉长度进行比较。结果SP、MLC、最大投影MLC和IUW的平均误差值分别为-2.1 mm +/- 4.6（SD）（P = 0.013）、9.8 mm +/- 6.8（P <0.001）、-5.2 mm +/- 7.8（P <0.001）和-14.1 mm +/- 9.3（P <0.001）。SP对术后髂髂动脉长度的术前预测比MLC（P <.001）、最大投影MLC（P <.001）和IUW（P <.001）更准确。结论：最短髂动脉路径长度与血管壁保持至少一个半径距离最准确，能够预测31枚AneuRx和2枚Excluder覆膜支架的覆膜支架长度。
PURPOSE To determine the accuracy of helical computed tomography (CT), projectional angiography derived from CT angiography, and intravascular ultrasonographic withdrawal (IUW) length measurements for predicting appropriate aortoiliac stent-graft length. MATERIALS AND METHODS Helical CT data from 33 patients were analyzed before and after endovascular repair of abdominal aortic aneurysm (Aneuryx graft, n = 31; Excluder graft, n = 2). The aortoiliac length of the median luminal centerline (MLC) and the shortest path (SP) that remained at least one common iliac arterial radius away from the vessel wall were calculated. Conventional angiographic measurements were simulated from CT data as the length of the three-dimensional MLC projected onto four standard viewing planes. These predeployment lengths and IUW length, available in 24 patients, were compared with the aortoiliac arterial length after stent-graft deployment. RESULTS The mean error values of SP, MLC, the maximum projected MLC, and IUW were -2.1 mm +/- 4.6 (SD) (P =.013), 9.8 mm +/- 6.8 (P <.001), -5.2 mm +/- 7.8 (P <.001), and -14.1 mm +/- 9.3 (P <.001), respectively. The preprocedural prediction of the postprocedural aortoiliac length with the SP was significantly more accurate than that with the MLC (P <.001), maximum projected MLC (P <.001), and IUW (P <.001). CONCLUSION The shortest aortoiliac path length maintaining at least one radius distance from the vessel wall most accurately enabled stent-graft length prediction for 31 AneuRx and two Excluder stent-grafts.