Sparse-view Cone-Beam Computed Tomography (CBCT) reconstruction is essential for reducing radiation dose and scan effort, but remains underconstrained due to limited projection information. Recent 3D Gaussian Splatting (3DGS)-based CBCT reconstruction methods rely on gradient-driven densification, which becomes unstabl...
Zong-Lin Li, Ke-Xian Xie, Fei-Ran Li et al.· 0 citations
ONAR is proposed, a Structure-Consistent Neural Operator for Null-Space-Aware Reconstruction that predicts a low-dimensional null-space-aware representation from the acquired projections as pseudo-measurements, demonstrating accurate, structurally reliable, and discretization-robust sparse-view CT reconstruction.
Song Ni, Hai-Jun Yu, Hao-Dong Li et al.· 0 citations
SCL-SB addresses the posterior-mean regression that blurs high-frequency anatomical detail in ill-posed FOV extrapolation, produces spatially continuous Hounsfield unit reconstructions free of the patch-boundary discontinuities introduced by Vision-transformer-based architectures, and avoids the spectral hallucination...
Xi-Hao Wu, Jia-Cheng Liu, Hai-Jun Yu et al.· Physics in Medicine and Biol...· 0 citations
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