filtered back-projection method
Cardiac PET/CT with Rb-82: optimization of image acquisition and reconstruction parameters
... this method seems less sensitive to mismatched attenuation correction, erroneous normalization, and poorly estimated scatter correction, but such robustness also depends on the time resolution of the TOF-PET ...
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Comparison of image quality between filtered back-projection and the adaptive statistical and novel model-based iterative reconstruction techniques in abdominal CT for renal calculi
... Quantitative data such as objective image noise and mean attenuation were analysed by comparing standard deviations, the 95 % confidence interval and statistical differences analysed using repeated analysis of variance ...
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Emphysema quantification using chest CT: influence of radiation dose reduction and reconstruction technique
... FBP filtered back projection, HIR hybrid iterative reconstruction; MIR model-based iterative ...FBP filtered back projection; HIR hybrid iterative reconstruction; MIR model-based ...
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Iterative Reconstruction in Head CT: Image Quality of Routine and Low Dose Protocols in Comparison with Standard Filtered Back Projection
... Due to the computational complexity, time for reconstruc- tion was substantially increased with use of the iterative algo- rithm. However, with a median reconstruction interval of 68 seconds, clinical efficiency was not ...
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Effect of Signal Filtering on Image Quality of Projection Based Magnetic Particle Imaging
... in projection-based MPI using ...the filtered back- projection (FBP) method with a ramp filter for image reconstruction, the RMS granularity and correlation coefficient decreased in the ...
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Feasibility of three-dimensional density tomography using dozens of muon radiographies and filtered back projection for volcanos
... case; i.e., the value is more precise when a new method of approximation of path length normalization is used. In addition, we studied the propagation of muon statistics to the final reconstruction results. By ...
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Rapid mapping of visual receptive fields by filtered back projection: application to multi-neuronal electrophysiology and imaging
... The principle behind this method is reverse correlation of the spikes to the white noise stimulus, and it has been described in detail (Chichilnisky, 2001). For the white noise stimulus, a 60,000-frame movie of a ...
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Review on Analytical and Iterative Reconstruction Algorithms for Computerized Tomography
... is filtered back ...the projection data are first filtered then the filtered data is linearly smeared back along ray paths to form image ...The filtered back ...
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FPGA Based Online Data Acquisition System (DAS) for Optical Tomography Application
... The data acquisition system for OT was successfully developed by using FPGA. The UART communication protocol used to connect the FPGA and the computer. The transfer rate of the data is 115200 baud rates. The complete ...
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The Object’s Reconstruction of CT Detection Based on Filtered Back Projection Algorithm
... radiographic projection from the finite object space evenly to the infinite space where the ray is, so it will include a point where the original pixel value is ...filter back projection ...
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Analytical image reconstruction methods in emission tomography
... and back-projection steps as discussed in next ...The Filtered Back-Projection (FBP) Method A practical reconstruction method is derived from the ...
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Filtered Back Projection Algorithm on Computed Tomography (Ct) Scan
... beam projection data have been used where all the rays for a single rotation angle maintains equal angle difference among ...using projection data results into blur image due to ...effect projection ...
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Gaia Data Release 2. Observational Hertzsprung-Russell diagrams
... further filtered on their agreement between the observed proper motion and the predicted projection of the assumed space motion at the 3D position of the star, using the measured stellar parallax, and ...
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Accurate Short-Term Yield Curve Forecasting using Functional Gradient Descent
... formal back-testing analysis not reported here the realized number of exceedances of confidence intervals produced by the FA–based approach was most of the times significantly lower than the one expected under the ...
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Projection Convolutional Neural Networks for 1-bit CNNs via Discrete Back Propagation
... Parameter: As mentioned above, the proposed projection loss has the ability to control the process of quantization, similar to clustering. We compute the distributions of the full-precision kernels and visualize ...
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A weighted denoising method based on Bregman iterative regularization and gradient projection algorithms
... of [] and [], we see that the bent parts of the curve do not get restored perfectly by the BIR method, while the straight edges are not be kept well by Chambolle’s dual denoising method. So we plan to ...
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Analysis of Transient and Steady-State Behavior of a Multichannel Filtered-x Partial-Error Affine Projection Algorithm
... the filtered- x LMS ...with filtered- x affine projection (AP) ...of filtered- x , affine projection or partial-update ...for filtered- x LMS [11] and AP algorithms [12], dif- ferent ...
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Accurate Yield Curve Scenarios Generation using Functional Gradient Descent
... structure dynamics estimated by FGD are directly interpretable in terms of observable interest rate variables and can be naturally related to the prices of further interest rates derivatives, as for instance forward ...
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Filtered X Affine Projection Algorithms for Active Noise Control Using Volterra Filters
... Based on these premises, we present in this paper a cou- ple of novel filtered-X AP (F-X AP) algorithms for non- linear active noise control. The derivation of these algo- rithms is given according to the SVF ...
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Rupture process of the 2007 Notohanto earthquake by using an isochrones back projection method and K NET/KiK net data
... new method for source imaging based on an “isochrones-backprojection” of observed seismograms in the source region ...directly back-project amplitudes of seismogram envelopes around the source into a space ...
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