cone-beam projections reconstruction
Reconstruction from Truncated Projections in Cone-beam CT using an Efficient 1D Filtering
... Although CT technology reached its maturation in the past decade, some novel technology trends still have evolved and revitalized this field. Amongst these major tendencies, reduction in radiation dose without ...
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FAST AND ACCURATE THREE-DIMENSIONAL RECONSTRUCTION FROM CONE-BEAM PROJECTION DATA USING ALGEBRAIC METHODS DISSERTATION
... main reconstruction techniques emerged, which still exist up to this day: On one side there is the domain of direct methods that capitalize on the Fourier Slice Theorem [4], while on the other side lies the domain ...
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GPU accelerated voxel-driven forward projection for iterative reconstruction of cone-beam CT
... computational load becomes a major issue. Thanks to the advent of graphic process- ing units (GPUs), massive computation power has been unleashed [8, 9]. In principles, forward and back projections can be ...
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REVIEW OF RECENT DEVELOPMENTS IN CONE-BEAM CT RECONSTRUCTION ALGORITHMS FOR LONG-OBJECT PROBLEM
... with reconstruction problems with truncated cone- beam CT projections acquired with a helical ...exact cone-beam CT reconstruction algorithms which the ...
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Fan-beam and cone-beam image reconstruction via filtering the backprojection image of differentiated projection data
... or cone-beam projections acquired from a general source ...Tuy’s cone-beam inversion formula (Tuy 1983), and its fan-beam counterpart (Chen ...the cone-beam ...the ...
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Advanced 4-dimensional cone-beam computed tomography reconstruction by combining motion estimation, motion-compensated reconstruction, biomechanical modeling and deep learning
... phase-binned cone-beam projections from the 4D- CT images and reconstructed 4D-CBCT images and the inter-phase DVFs from the projections using the original SMEIR ...
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Analysis of 3D Cone-Beam CT Image Reconstruction Performance on a FPGA
... CT scans use x-ray images to generate the tomographic slice images. X-rays are a type of electromagnetic radiation with higher energy than visible light and therefore have the ability to travel through various types ...
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An alternative derivation of Katsevich s cone-beam reconstruction formula
... Katsevich’s cone-beam image reconstruction algorithm is ...backprojection reconstruction formula from cone beam projections is ...the cone beam case is in ...
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Reduction of artifacts in dental cone beam CT images to improve the three dimensional image reconstruction
... In the case that the X-ray passes through two or more metallic objects, the above two conditions are applicable and the strong shade artifacts appear in a reconstructed CBCT image [7,8]. Little studies have been ...
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Fast quantitative reconstruction with focusing collimators for liver SPECT
... generate projections compared to a full Monte Carlo simulation, providing projections in several seconds instead of several ...the cone beam collimator (50 cm), the region inside the field of ...
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CUDA accelerated cone‐beam reconstruction
... Algebraic Reconstruction Technique) also has been implemented in CUDA [2], although it is less ...228 projections of 256 x 128 pixels and a 512 x 512 x 350 ...
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Reconstruction of Semantic Relationships from Their Projections in Biomolecular Domain
... from projections, where each node and edge is mapped to the representative of its equivalence class, by determining the relationship argument combinations that represent real relation- ...
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Dose Distributions in Simulated Electron Radiotherapy with Intraoral Cones Using Treatment Planning System
... the beam data in order to calculate the dose distribu- tion using a ...special cone, such as an intraoral cone, is employed ...pencil beam (GGPB) electron algorithm installed in a commercial ...
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Tomographic Image Reconstruction of Fan-Beam Projections with Equidistant Detectors using Partially Connected Neural Networks
... image reconstruction using multilayer perceptron with backpropagation training methods ...of projections is available ...divergent beam and several detectors receive the radiation after attenuation ...
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Cone beam CT in occlusal caries research
... Sirona cone beam ...that Cone beam CT has been studied by different groups in caries ...of cone beam CT, exclusively to look for caries does not seem ...
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Diagnostic value of cone beam computed tomography for recognition of oblique root fractures: An in vitro study
... the cone beam CT appeared to be the most efficient modality for detecting the discussed ...radiation beam to the plane of fracture occurred, the better the fracture fissure was ...
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Image Guided Radiotherapy (IGRT) Comparison between Cone Beam CT and Ultrasound System for Prostate Cancer
... Position differences between ultrasound system and Cone Beam CT system could consist of time difference between two systems scanning period. Also, we evaluated one patient when we are more familiar to ...
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Evaluation of the accuracy of Cone Beam Computerized Tomography (CBCT): medical imaging technology in head and neck reconstruction
... concern regarding proper use, adequate understanding, optimal quality and patient safety [1]. It is important for users of this technology to be well informed and trained in all the technical implications of creating a ...
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Cone beam computed tomography imaging of periodontal bone
... Primary reconstruction is done by a 3-D filtered back projection method proposed by Feldkamp ...Primary reconstruction from the raw data result in the formation of all axial slices from the region selected ...
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Cone Beam CT Study of Ponticulus Posticus: Prevalence, Characterictics
... Assessment of 233 3D CBCT images revealed the presence of ponticulus posticus in 48 patients, including 20.6% of cases, of which 6.4% demonstrated unilateral ponticulus posticus, and the[r] ...
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