Selective intra-arterial 3-dimensional computed tomography angiography for preoperative evaluation of nephron-sparing surgery
Selective intra-arterial 3-dimensional computed tomography angiography for preoperative evaluation of nephron-sparing surgery
复制标题
DOI：
10.1097/00004728-200407000-00010
复制
发表时间：
2004-07-01
影响因子：
1.3
通讯作者：
Ito, H
中科院分区：
文献类型：
--
作者：
Ueda, T;Tobe, T;Ito, H
目的：评价选择性动脉内三维CT血管成像(3D-CT)对保留肾单位手术(NSS)的术前评估价值。方法：对23例肾细胞癌患者行选择性肾内3D-CT血管成像。采用延时双时相技术同时进行血管成像和尿路造影。三维图像的生成采用了明暗处理的体绘制方法。测量靶结构的CT衰减，以进行定量评估。使用分级系统对3D图像的肾动、静脉和收集系统进行视觉评估。结果：3D-CT血管成像显示了大部分患者的肾动、静脉肾内分支及整个收集系统。肾动脉的显影与其CT密度显著相关。肾静脉的显示与其CT密度受周围肾实质的调节有关。结论：选择性动脉内3D-CT血管成像可显示肾内结构的详细情况。
Objective: To evaluate selective intra-arterial 3-dimensional computed tomography (3D-CT) angiography as a tool for the preoperative evaluation of nephron-sparing surgery (NSS).Methods: Twenty-three patients with renal cell carcinoma indicating NSS underwent selective intrarenal 3D-CT angiography. The time-lapse dual-phase technique was used for simultaneous vascular and urographic visualization. The 3D images were created by the shaded volume-rendering method. The CT attenuation of target structures was measured for quantitative evaluation. The 3D images were visually evaluated for the renal artery, vein, and collecting system using a grading system. Results were statistically analyzed.Results: The 3D-CT angiography depicted the intrarenal branches of the renal artery and vein and the whole collecting system in most patients. Visualization of the renal artery was significantly correlated to its CT attenuation. Visualization of the renal vein was correlated to its CT attenuation adjusted by the surrounding renal parenchyma.Conclusion: Selective intra-arterial 3D-CT angiography allows the detailed visualization of intrarenal structures.