量子检测效率在数字化X射线摄影系统检定中的应用

The Application of Detective Quantum Efficient in Calibration of Digital Radiography

介绍了量子检测效率在数字化X射线系统检定中的应用。由于量子检测效率描述了探测到的X射线和最终通过平板探测器生成的医学图像的之间的效率，因此量子检测效率的检测可以把入射X射线剂量与平板探测器产生的图像联系起来。实验证明通过量子检测效率的检测，可以明确了解数字化X射线系统的平板探测器的基本性能。

The application of detective quantum efficient in calibration of digital radiography is described. Detective quantum efficient gives an indication of the system effectiveness in detecting X-ray beam and faithfully reproducing medical image by the flat panel detector, so the measurement of the detective quantum efficiency has been a link between X-ray beam and image reproduced by the flat panel detector. The experiment result has proved that some important performance about the flat panel detector of digital radiography can be found by the measurement of the detective quantum efficiency.