摘要
本文介绍了L—频段ESR图像重建的原理和数据处理方法。通过概述L—频段ESR成像系统,讨论了扫描场和梯度场在成像中的作用及其和投影数据的关系,给出了整个图像重建数据处理的步骤框图,着重地讨论了卷积差分的原理和方法,并介绍了本系统中所采用的滤波反投影图像重建方法。最后给出了用DPPH和煤作样品所成的像,并对实验结果进行了讨论。
This paper presents the principle and data processing method for L-band ESR imaging reconstruction. Through outlining the whole system, the function of scanning field and gradient field and their relation with projection data are discussed. The flow diagram of reconstruction data processing emphasizing on convolution difference principle and method is given. The filtered back-projection method applied in our system is also described. Finally, some images reconstructed from ESR signals of DPPH and coal are given, and the results of experiments are also analysed and discussed.
出处
《波谱学杂志》
CAS
CSCD
1990年第4期471-476,共6页
Chinese Journal of Magnetic Resonance
基金
国家自然科学基金
关键词
电子自旋共振
图像
重建
成像系统
L-band ESR
Image reconstruction: Convolution difference method
filtered back-projection.
