摘要
最常用于CT成象技术的重建是以卷积法为基础的。本文首先给出了用于产生模拟投影信号的图象模型,研究了不同滤波函数和内插方式对卷积法图象重建的影响。对内插法进行了有效地修正,提高了图象重建速度和质量,得到令人满意的结果。最后,成功地将这种改进方法用于重建非线性参量断层图象。
An improved convolution algorithm has been developed for rapid constructing CT image, and an ideal numerical method to produce analog projecting signal is presented. The effect of different filtering functions and interpolation algorithms is examined and the quality of reconstruction images is satisfactory. At last, ultrasonic nonlinear images are reconstructed successfully by using the algorithm.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1992年第4期543-550,共8页
Journal of Nanjing University（Natural Science）
关键词
卷积法
图象重建
非线性参量
成象
convolution algorithm
image reconstruction
nonlinear parameter imaging
