Parameters Calibration and Imaging of CT System

The CT system can obtain the structural information of the sample through the absorption characteristics of the ray energy. It plays an important role in the fields of medicine and industry. However, it is easy to make mistakes when CT system is installed, so the calibration of parameters becomes particularly important. Based on geometry knowledge and Hamming filter back projection, we establish a mathematical model of CT system parameter calibration. Also, the two-dimensional reconstruction of image is completed according to the received information. It has a certain significance in the imaging of CT system.