Results 121 to 130 of about 4,329,903 (369)

Fast Parameter Estimation in Loss Tomography for Networks of General Topology [PDF]

arXiv, 2015
As a technique to investigate link-level loss rates of a computer network with low operational cost, loss tomography has received considerable attentions in recent years. A number of parameter estimation methods have been proposed for loss tomography of networks with a tree structure as well as a general topological structure.
arxiv  

Cranial computed tomography in diagnosis and management of acute head trauma [PDF]

, 1978
Zimmerman Ra, L T Bilaniuk, Thomas A. Gennarelli, D. Bruce, Carol A. Dolinskas, Barbara P. Uzzell   +5 more
openalex   +1 more source

Static and dynamic assessment of myocardial perfusion by computed tomography.

European Heart Journal-Cardiovascular Imaging, 2016
Recent developments in computed tomography (CT) technology have fulfilled the prerequisites for the clinical application of myocardial CT perfusion (CTP) imaging.
I. Danad, J. Szymonifka, Joshua Schulman-Marcus, J. Min   +3 more
semanticscholar   +1 more source

Optimal estimation of quantum processes using incomplete information: variational quantum process tomography [PDF]

Quantum Information and Computation, Vol. 12, No. 5&6 (2012) 0442-0447, 2010
We develop a quantum process tomography method, which variationally reconstruct the map of a process, using noisy and incomplete information about the dynamics. The new method encompasses the most common quantum process tomography schemes. It is based on the variational quantum tomography method (VQT) proposed by Maciel et al.
arxiv  

Myocardial infarct quantification in the dog by single photon emission computed tomography. [PDF]

, 1978
J.W. Keyes, P. F. Leonard, Steven L. Brody, D J Svetkoff, W.L. Rogers, Benedict R. Lucchesi   +5 more
openalex   +1 more source

Accuracy of lung ultrasound for the diagnosis of consolidations when compared to chest computed tomography

Critical Ultrasound Journal, 2015
OBJECTIVES Despite emerging evidences on the clinical usefulness of lung ultrasound (LUS), international guidelines still do not recommend the use of sonography for the diagnosis of pneumonia.
P. Nazerian, G. Volpicelli, S. Vanni, C. Gigli, Laura Betti, M. Bartolucci, M. Zanobetti, F. Ermini, Cristina Iannello, S. Grifoni   +9 more
semanticscholar   +1 more source

High Resolution Computed Tomography of Positron Emitters [PDF]

, 1977
Stephen E. Derenzo, Thomas F. Budinger, J.L. Cahoon, R.H. Huesman, H. Jackson   +4 more
openalex   +1 more source

Development and Validation of a Deep-Learning-Based Algorithm for Detecting and Classifying Metallic Implants in Abdominal and Spinal CT Topograms

Diagnostics
Purpose: To develop and validate a deep-learning-based algorithm (DLA) that is designed to segment and classify metallic objects in topograms of abdominal and spinal CT.
Moon-Hyung Choi, Joon-Yong Jung, Zhigang Peng, Stefan Grosskopf, Michael Suehling, Christian Hofmann, Seongyong Pak   +6 more
doaj   +1 more source

Supervised Reconstruction for Silhouette Tomography [PDF]

arXiv
In this paper, we introduce silhouette tomography, a novel formulation of X-ray computed tomography that relies only on the geometry of the imaging system. We formulate silhouette tomography mathematically and provide a simple method for obtaining a particular solution to the problem, assuming that any solution exists.
arxiv  

Omni-tomography/Multi-tomography -- Integrating Multiple Modalities for Simultaneous Imaging [PDF]

arXiv, 2011
Current tomographic imaging systems need major improvements, especially when multi-dimensional, multi-scale, multi-temporal and multi-parametric phenomena are under investigation. Both preclinical and clinical imaging now depend on in vivo tomography, often requiring separate evaluations by different imaging modalities to define morphologic details ...
arxiv