摘要
CT系统除需要设备支持外,参数标定精度和成像模型对扫描效果具有显著影响.本文巧妙地利用模板与探测器的关系,寻找最佳标定位置,精确地对CT扫描系统进行参数标定,在此基础上,建立含有插值、滤波、局部搜索算法的CT介质成像优化模型,并列举实例进行图像重构模拟分析,最后利用逐差法设计更加精确的标定模板.
In the CT system,parameter calibration accuracy and imaging model had a significant impact on the scanning results besides equipment support. In this paper,the relationship between the template and the detector was used to find the best calibration position skillfully,and the CT scan system was calibrated accurately. Based on this,a CT medium imaging optimization model was established based on interpolation,filtering and local search algorithm,then we enumerated examples for image reconstruction simulation analysis. Finally,a more accurate calibration template was designed by using the successive difference method.
引文
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