Divergent-beam backprojection-filtration formula with applications to region-of-interest imaging
Résumé
We propose a new backprojection-filtration (BPF) method for cone-beam computed tomography (CBCT) with flat-panel detectors over circular orbits. The method is exact in the fan-beam geometry and provides an approximate CBCT reconstruction that is different from the standard Feldkamp-Davis-Kress (FDK) method. More interestingly, it can be used for region-of-interest (ROI) reconstruction by complementing a truncated low-noise acquisition with dense angular sampling by additional non-truncated views that are either high-noise or angularly undersampled.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|
Loading...