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DTS reconstruction of Shepp–Logan phantom using prior based and FBP based methods with 60°–90° scan angles. (The three tumors simulated are indicated by the arrows.) (a) The prior CBCT image CBCTprior, (b) the new CBCT image CBCTnew, (c) prior based 60° DTSnew, (d) prior based 90° DTSnew, (e) FBP based 90° DTSnew.
