摘要
本文介绍了换能器处于远场、旁轴近似、近场以及换能器沿平面扫描时的超声反射CT(URCT)成像方法、最大似然估计方法、时域解卷积算法和小波变换方法、合成显示三维图像方法在URCT中的应用,在自行研制的超声成像系统上开展了相应的实验研究,取得了较好的结果。
In this paper, ultrasonic reflection mode computer tomographic (URCT) methods are presented when the transducer is located in far field, paraxial approximation, near field respectively or scanning along a straight line. Maximum likelihood estimation method, timedomain deconvolution algorithm, wavelet transform method and three-dimensional composite display method are used to URCT. An ultrasonic imaging system is established and some very nice experiment results are shown.
出处
《物理学进展》
CSCD
北大核心
1996年第3期624-636,共13页
Progress In Physics
基金
中国科学院"八五"重点项目
国家自然科学基金
声场声信息国家重点实验室的支持
