title: A modified equally sloped algorithm based on the total variation algorithm in computed tomography for insufficient data.
abstract: Computed tomography (CT) has become an important technique for analyzing the inner structures of material, biological and energy fields. However, there are often challenges in the practical application of CT due to insufficient data. For example, the maximum rotation angle of the sample stage is limited by sample space or image reconstruction from the limited number of views required to reduce the X-ray dose delivered to the sample. Therefore, it is difficult to acquire CT images with complete data. In this work, an iterative reconstruction algorithm based on the minimization of the image total variation (TV) has been utilized to develop equally sloped tomography (EST), and the reconstruction was carried out from limited-angle, few-view and noisy data. A synchrotron CT experiment on hydroxyapatite was also carried out to demonstrate the ability of the TV-EST algorithm. The results indicated that the new TV-EST algorithm was capable of achieving high-quality reconstructions from projections with insufficient data.
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Guan
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Zhiting
authors.initials: Z
authors.lastname: Liang
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Guo
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Wei
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Ronghui
authors.initials: R
authors.lastname: Luo
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.affiliation: National Synchrotion Radiation Laboratory, University of Science and Technology of China, 3#222, 42 Hezuohua South Road, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Yangchao
authors.initials: Y
authors.lastname: Tian
keywords: computed tomography; equally sloped tomography; few-view; limited-angle; noisy data; total variation minimization