论文部分内容阅读
本文给出了用限定反卷积法消除在单光子发射计算机层析X射线摄影中Compton-散射数据的三个程序。第一个程序实现了对包含从单一重建断层图象发出的散射的二维点源响应函数(PSRF)的反卷积;第二个程序给出了对从先于重建的发射数据图象中测得的二维点源响应函数的反卷积,第三个程序实现了对从一叠重建断层图象中测出的三维点源响应函数的反卷积。本文同时也给出了用这些程序计算从静态柱状核型所获得的数据及从静态点分辩率模型所获得的数据的计算结果。比较这些结果可校正散射窗减法算得的散射。重建图象的三维
This paper presents three procedures for the deconvolution of Compton-scattering data in a single-photon emission computed tomography using a defined deconvolution method. The first program implements the deconvolution of the two-dimensional point source response function (PSRF) containing the scatter emanating from a single reconstructed tomographic image; the second procedure gives the deconvolution of the PSRF from the reconstructed transmitted data image The deconvolution of the measured two-dimensional point source response function, the third of which enables the deconvolution of the three-dimensional point source response function measured from a stack of reconstructed tomograms. This paper also gives the results of calculating the data obtained from static columnar karyotypes and the data obtained from the static point resolution model using these procedures. Comparing these results corrects the scatter calculated by the subtraction of scattering windows. Reconstruction of the image of three-dimensional