Kyriakou Y, Struffert T, Dörfler A, Kalender W A
Institut für Medizinische Physik, Universität Erlangen-Nürnberg, Henkestrasse 91, Erlangen, Germany.
Radiologe. 2009 Sep;49(9):811-9. doi: 10.1007/s00117-009-1860-9.
Flat detectors (FDs) have been developed for use in radiography and fluoroscopy to replace standard X-ray film, film-screen combinations and image intensifiers (II). In comparison to X-ray film and II, FD technology offers higher dynamic range, dose reduction, fast digital readout and the possibility for dynamic acquisitions of image series, yet keeping to a compact design. It appeared logical to employ FD designs also for computed tomography (CT) imaging. FDCT has meanwhile become widely accepted for interventional and intra-operative imaging using C-arm systems. Additionally, the introduction of FD technology was a milestone for soft-tissue CT imaging in the interventional suite which was not possible with II systems in the past. This review focuses on technical and performance issues of FD technology and its wide range of applications for CT imaging. FDCT is not aimed at challenging standard clinical CT as regards to the typical diagnostic examinations, but it has already proven unique for a number of dedicated CT applications offering distinct practical advantages, above all the availability of immediate CT imaging during an intervention.
平板探测器（FDs）已被开发用于放射摄影和荧光透视，以取代标准X射线胶片、胶片-增感屏组合和影像增强器（II）。与X射线胶片和影像增强器相比，FD技术具有更高的动态范围、剂量降低、快速数字读出以及动态采集图像序列的可能性，同时保持紧凑的设计。将FD设计用于计算机断层扫描（CT）成像似乎是合乎逻辑的。与此同时，FDCT已被广泛应用于使用C形臂系统的介入和术中成像。此外，FD技术的引入是介入手术室软组织CT成像的一个里程碑，而这在过去使用影像增强器系统是不可能实现的。本综述重点关注FD技术的技术和性能问题及其在CT成像中的广泛应用。在典型的诊断检查方面，FDCT并非旨在挑战标准临床CT，但它已被证明在一些专用CT应用中具有独特性，具有明显的实际优势，尤其是在介入过程中可立即进行CT成像。
