Metz滤波函数在SPECT图像重建中的参数选择  

Application of Metz filtering in SPECT imaging reconstruction

作　　者：赵周社[1] 周前[1] 

机构地区：[1]北京协和医院,北京100730

出　　处：《核技术》1993年第5期286-290,共5页Nuclear Techniques

摘　　要：采用使物-像间均方差最小的方法,选择Metz滤波函数的参数值。结果表明:参数X值和帧计数以及总计数间存在明显正相关。According to the minimum mean square error between the object and the image, the selection of an optimal parameter of the Metz filter is reported. The result indicate that (1) there is a significant correlation between the X parameter and the first projection counts and total counts; and (2) the Metz filter possesses the optimal filtering function and X parameter can be practically and accurately estimated from the first projection using a regression formula.

关 键 词：滤波函数 断层摄影术 影像恢复 

分 类 号：R811.1[医药卫生—放射医学]