Anisotropic total variation minimization approach in in-line phase-contrast tomography and its application to correction of ring artifacts
Ji Dong-Jiang1, 2, Qu Gang-Rong1, 3, †, Hu Chun-Hong4, Liu Bao-Dong5, 6, 7, Jian Jian-Bo8, Guo Xiao-Kun9
       

(a) Sinogram of the projection data from the liver section:projections used in this sinogram were collected from 180° angle of view (1024 projections with 0.176° projection interval), (b) magnified region of interest (ROI) in the sinogram.