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Augmented Likelihood Image Reconstruction
IEEE Transactions on Medical Imaging, 2016The presence of high-density objects remains an open problem in medical CT imaging. Data of projections passing through objects of high density, such as metal implants, are dominated by noise and are highly affected by beam hardening and scatter. Reconstructed images become less diagnostically conclusive because of pronounced artifacts that manifest as
Maik, Stille +4 more
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Kinematic reconstruction in cardiovascular imaging
Radiología (English Edition), 2018Advances in clinical applications of computed tomography have been accompanied by improvements in advanced post-processing tools. In addition to multiplanar reconstructions, curved planar reconstructions, maximum intensity projections, and volumetric reconstructions, very recently kinematic reconstruction has been developed.
G, Bastarrika +4 more
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Advances in PET Image Reconstruction
PET Clinics, 2007Until recently, the most widely used methods for image reconstruction were direct analytic techniques. Iterative techniques, although computationally much more intensive, produce improved images (principally arising from more accurate modeling of the acquired projection data), enabling these techniques to replace analytic techniques not only in ...
Reader, A. J., Zaidi, H.
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Fast reconstruction of resistance images
Clinical Physics and Physiological Measurement, 1987Resistance imaging involves the reconstruction of the distribution of electrical resistivity within a conducting object from measurements of the voltages or voltage gradients developed on the boundary of the object while current is flowing within the object.
D C, Barber, A D, Seagar
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Reconstruction Algorithms for Electromagnetic Imaging
IEEE Transactions on Instrumentation and Measurement, 2003Two algorithms for image reconstruction in electromagnetic imaging are proposed. The first approach concerns the application of a hybrid version of the genetic algorithm to tomographic imaging of dielectric configurations. In the second approach, buried inhomogeneities are schematized as multilayer infinite dielectric cylinders with elliptic cross ...
PASTORINO, MATTEO +3 more
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Reconstructed Dynamics of the Imaging Photoplethysmogram
2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2018Human photoplethysmogram (PPG) is one of the signals widely applied for health monitoring. Development of the new techniques made possible evolution of traditional contact PPG which was measured at red and near-infrared light (NIR) to the contactless, imaging PPG (iPPG) that can be recorded at various light wavelengths, including ambient visible light.
Nina, Sviridova +5 more
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Image Reconstruction by Multilabel Propagation
2017This work presents a non-convex variational approach to joint image reconstruction and labeling. Our regularization strategy, based on the KL-divergence, takes into account the smooth geometry on the space of discrete probability distributions. The proposed objective function is efficiently minimized via DC programming which amounts to solving a ...
Zisler, Matthias +3 more
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Abstract An image defines a probability distribution for where the next photon will land. This probability distribution can be estimated by counting the number of photons detected in each ‘pixel’’ of the image. On account of fluctuations in the density of air and defects in the camera, this probability distribution differs from the one ...
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