The image quality of respiratory sorted four-dimensional (4D) cone-beam (CB) computed tomography (CT) is often limited by streak artifacts due to insufficient projections. A motion weighted reconstruction (MWR) method is proposed to decrease streak artifacts and improve image quality. Firstly, respiratory correlated CBCT projections were interpolated by directional sinogram interpolation (DSI) to generate additional CB projections for each phase and subsequently reconstructed. Secondly, local motion was estimated by deformable image registration of the interpolated 4D CBCT. Thirdly, a regular 3D FDK CBCT was reconstructed from the non-interpolated projections. Finally, weights were assigned to each voxel, based on the local motion, and then were used to combine the 3D FDK CBCT and interpolated 4D CBCT to generate the final 4D image. MWR method was compared with regular 4D CBCT scans as well as McKinnon and Bates (MKB) based reconstructions. Comparisons were made in terms of (1) ...
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Publication date: October 2017 Source: International Journal of Biological Macromolecules, Volume 103 Author(s): Mingan Yu, Duqiang Liu, ...
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Abstract Endurance exercise generates CO 2 via aerobic metabolism; however, its role remains unclear. Exogenous CO 2 by transcutaneous d...
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FS Teni, AS Surur, A Hailemariam, A Aye, G Mitiku, AE Gurmu, B Tessema Annals of Medical and Health Sciences Research 2015 5(6):454-460 ...
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The NO(X(2)Π) + N((4)S) reaction which occurs entirely in the triplet manifold of N2O is investigated using quasiclassical trajectories and ...
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One third of adult patients with orthognathic surgery of a prognathic or retrognathic mandible show relapse. The sagittal split osteotomy of...
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Medicine by Alexandros G. Sfakianakis BioMed Research International BioMed Research InternationalTanshinone IIA Alleviates CCL2-Induced Le...
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We present a small-scale fading analysis of the vehicular-to-vehicular (V2V) propagation channel at 5.9 GHz when both the transmitter (Tx) a...
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The nanoanalytical high resolution TEM/STEM investigation of the intergranular grain boundary phase of anisotropic sintered and rapidly quen...
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