Results 11 to 20 of about 875,814 (348)

Learning Diffractive Optical Communication Around Arbitrary Opaque Occlusions [PDF]

Nature Communications (2023), 2023
Free-space optical systems are emerging for high data rate communication and transfer of information in indoor and outdoor settings. However, free-space optical communication becomes challenging when an occlusion blocks the light path. Here, we demonstrate, for the first time, a direct communication scheme, passing optical information around a fully ...
Rahman MSS, Gan T, Deger EA, Işıl Ç, Jarrahi M, Ozcan A.   +5 more
arxiv   +2 more sources

COMP Report: CPQR technical quality control guidelines for use of positron emission tomography/computed tomography in radiation treatment planning

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Ran Klein, Mike Oliver, Dan La Russa, John Agapito, Stewart Gaede, JeanPierre Bissonnette, Arman Rahmim, Carlos Uribe   +7 more
wiley   +1 more source

Clinical commissioning of an adaptive radiotherapy platform: Results and recommendations

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Online adaptive radiotherapy platforms present a unique challenge for commissioning as guidance is lacking and specialized adaptive equipment, such as deformable phantoms, are rare. We designed a novel adaptive commissioning process consisting of end‐to‐end tests using standard clinical resources.
Kelly Kisling, Timothy D. Keiper, Daniela Branco, Grace Gwe‐Ya Kim, Kevin L Moore, Xenia Ray   +5 more
wiley   +1 more source

Statistical process control to monitor use of a web‐based autoplanning tool

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the use of statistical process control (SPC) for quality assurance of an integrated web‐based autoplanning tool, Radiation Planning Assistant (RPA). Methods Automatically generated plans were downloaded and imported into two treatment planning systems (TPSs), RayStation and Eclipse, in which they were recalculated using ...
Hunter Mehrens, Raphael Douglas, Mary Gronberg, Kelly Nealon, Joy Zhang, Laurence Court   +5 more
wiley   +1 more source

Multiple sclerosis clinical decision support system based on projection to reference datasets

Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1863-1873, December 2022., 2022
Abstract Objective Multiple sclerosis (MS) is a multifactorial disease with increasingly complicated management. Our objective is to use on‐demand computational power to address the challenges of dynamically managing MS. Methods A phase 3 clinical trial data (NCT00906399) were used to contextualize the medication efficacy of peg‐interferon beta‐1a vs ...
Chadia Ed‐driouch, Florent Chéneau, Françoise Simon, Guillaume Pasquier, Benoit Combès, Anne Kerbrat, Emmanuelle Le Page, Sophie Limou, Nicolas Vince, David‐Axel Laplaud, Franck Mars, Cédric Dumas, Gilles Edan, Pierre‐Antoine Gourraud   +13 more
wiley   +1 more source

Concrete Multi-Type Defect Classification Algorithm Based on MSSMA-SVM

Sensors, 2022
In order to realize the automatic classification of internal defects for non-contact nondestructive testing of concrete, a concrete multi-type defect classification algorithm based on the mixed strategy slime mold algorithm support vector machine (MSSMA ...
Xu Tian, Jun Ao, Zizhu Ma, Bijian Jian, Chunbo Ma   +4 more
doaj   +1 more source

On atmospheric optical communications [PDF]

Revue de Physique Appliquée, 1984
This paper investigates, more rigorously, the diffraction of a powerful optical carrier propagating in an unguided communication channel (dry atmosphere). Four main relevant topics are considered i) the radial temperature distribution, ii) the average beamwidth parameter, iii) a dimensionless optical distortion figure of merit, and iv) the irradiance ...
El-Badawy, El-S. A., El-Halafawy, F.Z.
openaire   +3 more sources

An Internal Defect Detection Algorithm for Concrete Blocks Based on Local Mean Decomposition-Singular Value Decomposition and Weighted Spatial-Spectral Entropy

Entropy, 2023
Within the scope of concrete internal defect detection via laser Doppler vibrometry (LDV), the acquired signals frequently suffer from low signal-to-noise ratios (SNR) due to the heterogeneity of the concrete’s material properties and its rough surface ...
Xu Tian, Jun Ao, Zizhu Ma, Chunbo Ma, Junjie Shi   +4 more
doaj   +1 more source

Optical quantum communication complexity in the simultaneous message passing model [PDF]

Phys. Rev. A 102, 062608 (2020), 2020
The communication cost of a classical protocol is typically measured in terms of the number of bits communicated for this determines the time required for communication during the protocol. Similarly, for quantum communication protocols, which use finite-dimensional quantum states, the communication cost is measured in terms of the number of qubits ...
arxiv   +1 more source

Optically Enabled ADCs and Application to Optical Communications [PDF]

IEEE Open Journal of the Solid-State Circuits Society, 2021
Published by IEEE, New York ...
Andrea Zazzi, Juliana Muller, Maxim Weizel, Jonas Koch, Dengyang Fang, Alvaro Moscoso-Martir, Ali Tabatabaei Mashayekh, Arka D. Das, Daniel Drays, Florian Merget, Franz X. Kartner, Stephan Pachnicke, Christian Koos, J. Christoph Scheytt, Jeremy Witzens   +14 more
openaire   +5 more sources