Enhanced spatial resolution in cone beam X-ray luminescence computed tomography using primal-dual Newton conjugate gradient method

Cone beam X-ray luminescence computed tomography (CB-XLCT) is a novel dual-model imaging technique which opens new possibilities to perform molecular imaging with X-ray. However, the spatial resolution of CB-XLCT is low due the ill-posedness of the inverse problem. Considering the sparse distribution characteristics of the nanophosphors in imaging object, in this paper we proposed a compressive sensing based reconstruction algorithm by using the...