نتایج جستجو برای: iterative reconstruction
تعداد نتایج: 181226 فیلتر نتایج به سال:
Reading a book is also kind of better solution when you have no enough money or time to get your own adventure. This is one of the reasons we show the fundamentals of computerized tomography image reconstruction from projections as your friend in spending the time. For more representative collections, this book not only offers it's strategically book resource. It can be a good friend, really go...
PURPOSE To prospectively compare traditional filtered back projection (FBP) and iterative image reconstruction for the evaluation of heavily calcified arteries with coronary computed tomography (CT) angiography. MATERIALS AND METHODS The study had institutional review board approval and was HIPAA compliant. Written informed consent was obtained from all patients. Fifty-five consecutive patien...
1 Acknowledgements 3 Dedication 5 List of Tables 9 List of Figures 10 List of Acronyms 16
Abstract Traditional space-invariant regularization schemes in tomographic image reconstruction using penalizedlikelihood estimators produce images with nonuniform resolution properties. The local point spread functions that quantify the local smoothing properties of such estimators are not only space-variant and asymmetric, but are also object-dependent even for space-invariant systems. We pro...
A priority-based method for pixel reconstruction and incremental hole filling in incomplete images and 3D surface data is presented. The method is primarily intended for reconstruction of occluded areas in 3D surfaces and makes use of a novel prioritizing scheme, based on a pixelwise defined confidence measure, that determines the order in which pixels are iteratively reconstructed. The actual ...
A weighted Bregman-Gradient Projection denoising method, based on the Bregman iterative regularization (BIR) method and Chambolle's Gradient Projection method (or dual denoising method) is established. Some applications to image denoising on a 1-dimensional curve, 2-dimensional gray image and 3-dimensional color image are presented. Compared with the main results of the literatures, the present...
A general method for solving surface structures in three dimensions using surface x-ray-diffraction data coupled with direct methods is outlined. The method exploits the existence of a support constraint normal to the surface, and couples the concepts of projections, operators, and sets used in the image reconstruction literature with statistical operators used in direct methods. The approach p...
This text summarizes the main technical problems related to 3D image reconstruction in PET, SPECT and CT, and provides references to a selection of key papers and to review papers. q 2001 Elsevier Science Ltd. All rights reserved.
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
Statistical Image Reconstruction Algorithms Using Paraboloidal Surrogates for PET Transmission Scans
Statistical Image Reconstruction Algorithms Using Paraboloidal Surrogates for PET Transmission Scans
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