A Novel Method for MTF Measurement of Digital Radiographic Systems

摘要：

The exact determination of the modulation transfer function (MTF) of X-ray digital imaging system is a persistent problem. We present a practical method for measuring the MTF curve of X-ray linear flat panel detector. The method is based on the noise transfer theory of cascaded linear system. The scale factor between noise power spectrum (NPS) and MTF should be obtained firstly. Accurate NPS estimation of system noise (quantum noise and additive noise) by background trends removal and MTF values measurement by standard bar pattern method were required in this method.

关键词： Modulation transfer function noise power spectrum cascased linear system standard bar pattern

作者: Zhongxing Zhou Feng Gao Huijuan Zhao Lixin Zhang GuoHui Li

作者单位: School of Precision Instrument and Optoelectronics Engineering,Tianjin University,Tianjin, China TEDA Orking Hi-Tech Co. LTD The Tianjin University Science and Technology Park Tianjin, China

会议类型: 国际会议

会议名称: 2011 4th International Conference on Biomedical Engineering and Informatics(第四届生物医学工程与信息学国际会议 BMEI 2011)

会议地点: 上海

会议语种:英文

页码: 62-65

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）