A Novel Scanning Mode and Image Reconstruction Method on Super-Resolution CT
Peng Zhang · Chinese Journal of Stereology and Image Analysis · 2005
In this paper, we design a novel scanning mode based on fan beam equidistant sampling and propose a corresponding image reconstruction method for super-resolution CT, according to the common industrial CT scanning geometry. From the two sets of overlapped low resolution fan beam projection data acquired by switching the rotation center of CT system near a quarter of the detector width to left and right sides respectively, we can demodulate a virtual high resolution projection data by solving linear equations with bidiagonal coefficient matrix, and then reconstruct high resolution CT image by the fan beam FBP algorithm. The simulation results verify the validity of our method.