摘要
在X射线CT(Computed Tomography)成像尤其是锥束成像过程中,散射是不可忽略的影响因素。探测信号中散射信号的存在导致CT图像中的伪影。依据散射信号的特征属性,提出了一种散射的估计方法。该方法利用简单的解析公式估计散射,简单易操作。实际的实验数据验证了方法的有效性。
For X-ray CT imaging,especially for Cone-beam CT,scatter is an influence factor can not be ignored.The exist of scatter signal in the detection signal leads to the artifacts in the CTimages.According the feature of scatter signal,one estimation method of scatter is proposed.The method estimates scatter signal using simple analytical formula and can be easily implemented.The feasibility of the proposed algorithm is validated by the practical experiment data.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2010年第12期1579-1581,1606,共4页
Nuclear Electronics & Detection Technology
