An Improved FBP Arithmetic Based on Detector’s Width

In the process of practical CT reconstruction,the detector has its size.We will get more accurate information for reconstruction if we take it into our account,when we design our reconstruction arithmetic.Based on the detector’s structure,this paper gives a new improved FBP-Arithmethm,and we take it into practical experiment.The outcome indicates that the improved FBP-Arithmethm will give a better result in the reconstructed image’s edge and detail information.Also has the effect of restrain the yawp,it will have some significance in the practical ICT system.