Schaefer-Prokop C, Uffmann M, Sailer J, Kabalan N, Herold C, Prokop M
Universitätsklinik für Radiodiagnostik, AKH Vienna, Austria.
Radiologe. 2003 May;43(5):351-61. doi: 10.1007/s00117-003-0893-8.
Flat panel detectors are characterized by improved handling and increased dose efficiency. This allows for increasing of work flow efficiency and for reducing the exposure dose by about 50% compared to current systems with a sensitivity of 400. Whether the increased dose efficiency should be used to reduce acquisition dose or to increase image quality in the chest, will be shown by further clinical experience and will be also determined by the subjective preference of the radiologists. The decreased level of image noise opens new perspectives for image processing that way that elaborated multifrequency processing allows for optimizing the display of very small and low contrast structures that was so far limited by overlying image noise. Specialized applications of dual energy subtraction and temporal subtraction will also profit by the new detector technology and will be further driven forward in context with applications such as computed assisted diagnosis even though this is currently not yet broadly applied. Storage phosphor radiography still represents an important alternative technique based on its larger flexibility with respect to equipment configuration, its broader application options in intensive care and emergency radiology and due to economic reasons. These facts are further underlined by the fact that image quality also in storage phosphor radiography could be constantly increased by improving detector technology and image processing and consequently has a high standard.
平板探测器的特点是操作更便捷，剂量效率更高。与目前灵敏度为400的系统相比，这使得工作流程效率得以提高，曝光剂量降低约50%。增加的剂量效率是用于降低采集剂量还是提高胸部图像质量，将由进一步的临床经验来证明，也将由放射科医生的主观偏好决定。图像噪声水平的降低为图像处理开辟了新的前景，通过精细的多频率处理，可以优化非常小的低对比度结构的显示，而这些结构此前一直受到叠加图像噪声的限制。双能减影和时间减影的专业应用也将受益于新的探测器技术，并将在计算机辅助诊断等应用的背景下进一步向前发展，尽管目前尚未广泛应用。存储荧光体射线照相术仍然是一种重要的替代技术，这基于其在设备配置方面更大的灵活性、在重症监护和急诊放射学中更广泛的应用选择以及经济原因。存储荧光体射线照相术中的图像质量也可以通过改进探测器技术和图像处理不断提高，因此具有很高的标准，这一事实进一步强调了上述情况。
