小波取样定理在断层CT的ART方法中的应用

Application of Wavelet Sampling Theorem in ART Method about the Cross-Sectional CT

小波分析技术在工程技术领域发挥着越来越重要的作用.CT技术是医学影家诊断领域的一个划时代的贡献.本文通过将一维小波取样定理推广到二维,对现有的断层CT的ART方法进行了改进、计算机模拟结果也表明,本文提出的图象重建的小波分析方法有着十分优越的特性.

The technology of wavelet analysis has been playing an important role in the field of engineering technology. CT (Computed Tomography) technique is one of the miracles in the field of medical imaging diagnose. In this paper, Wavelet sampling theorem has been extended from 1D to 2D, with which the ART method in Cross-sectional CT has been improved. Computer simulation results show that the wavelet analysis method in image reconstruction which has been put forward in this paper has an advantageous character.