Yueh N, Halvorsen R A, Letourneau J G, Crass J R
Department of Radiology, University of Minnesota Hospital and Clinic, Minneapolis 55455.
J Comput Assist Tomogr. 1989 Jan-Feb;13(1):182-4. doi: 10.1097/00004728-198901000-00047.
An angled approach to percutaneous biopsy or drainage using CT guidance is often required to avoid transgressing vital intervening structures. We describe a simple technique for CT-guided angled biopsy. By tilting the CT gantry off the axial plane, CT scans can be obtained that directly demonstrate the appropriate angle of approach while avoiding intervening structures. The gantry tilt technique provides direct visualization of the pathway of the needle tract; direct visualization is not possible with previously described techniques such as stereotactic biopsy or the triangulation technique. The gantry tilt technique is a practical, simple means for performing angled CT biopsy or aspiration in many cases.
经皮活检或引流通常需要在CT引导下采用倾斜进针路径，以避免穿过重要的中间结构。我们描述了一种CT引导下倾斜活检的简单技术。通过将CT扫描机架倾斜至与轴平面成一定角度，可以获得直接显示合适进针角度且避开中间结构的CT扫描图像。机架倾斜技术能直接观察针道路径；而立体定向活检或三角测量技术等先前描述的技术则无法直接观察。在许多情况下，机架倾斜技术是进行倾斜CT活检或抽吸的实用、简单方法。
