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AbstractAbstract
[en] In IGRT of deformable head-and-neck anatomy, patient setup corrections are derived by rigid registration methods. In practice, experienced radiation therapists often correct the resulting vectors, thus indicating a different prioritization of alignment of local structures. Purpose of this study is to transfer the knowledge experts apply when correcting the automatically generated result (pre-match) to automated registration. Datasets of 25 head-and-neck-cancer patients with daily CBCTs and corresponding approved setup correction vectors were analyzed. Local similarity measures were evaluated to identify the criteria for human corrections with regard to alignment quality, analogous to the radiomics approach. Clustering of similarity improvement patterns is applied to reveal priorities in the alignment quality. The radiation therapists prioritized to align the spinal cord closest to the high-dose area. Both target volumes followed with second and third highest priority. The bony pre-match influenced the human correction along the crania-caudal axis. Based on the extracted priorities, a new rigid registration procedure is constructed which is capable of reproducing the corrections of experts. The proposed approach extracts knowledge of experts performing IGRT corrections to enable new rigid registration methods that are capable of mimicking human decisions. In the future, the deduction of knowledge-based corrections for different cohorts can be established automating such supervised learning approaches.
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Available from http://dx.doi.org/10.1186/s13014-017-0842-8; Available from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5480194; PMCID: PMC5480194; PMID: 28637483; PUBLISHER-ID: 842; OAI: oai:pubmedcentral.nih.gov:5480194; Copyright (c) The Author(s). 2017; Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Radiation Oncology (Online); ISSN 1748-717X;
; v. 12; vp

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Saghai, B.
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)1983
CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)1983
AbstractAbstract
No abstract available
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Aug 1983; 2 p; 10. International conference on few-body problems in physics; Karlsruhe (Germany, F.R.); 21-27 Aug 1983; Published in summary form only.
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AbstractAbstract
[en] The main postulates of the quantum electrodynamics of bilocal fields are formulated, the theory containing three universal constants, c, h, and k. The fermion-photon form factor is determined, and the new theory is used to calculate radiative corrections in first-order perturbation theory for the fine-structure constant, fermion mass and magnetic moment, Coulomb potential, and fermion and photon Green's functions. The value α = 1/137.0345 is obtained for the fine-structure constant
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii; No. 6, 76-89(Jun 1994).
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Translation
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Kurkov, M.
EPJ Web of Conferences, Proceedings of the 20. international seminar on high energy physics - Quarks-20182018
EPJ Web of Conferences, Proceedings of the 20. international seminar on high energy physics - Quarks-20182018
AbstractAbstract
[en] We discuss a parity breaking in theories of fermions, which are trapped inside four-manifolds with boundaries. Even though these theories are parity-invariant at the classical level, the radiative corrections induce parity-violating boundary terms. The effect is present in both gauge and gravitational sectors. (author)
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Volkova, V.E.; Zhezher, Y.V.; Levkov, D.G.; Rubakov, V.A.; Matveev, V.A. (eds.); EDP Sciences, 17, Avenue du Hoggar, Parc d'Activite de Courtaboeuf, BP 112, F-91944 Les Ulis Cedex A (France); v. 191 [860 p.]; 2018; p. 06013.p.1-06013.p.8; Quarks-2018: 20. international seminar on high energy physics; Valday (Russian Federation); 27 May - 2 Jun 2018; Available from doi: https://doi.org/10.1051/epjconf/201819106013; 37 refs.
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AbstractAbstract
[en] We present an alternative technique for evaluating multiloop Feynman diagrams, using the integration by fractional expansion method. Here we consider generic diagrams that contain propagators with radiative corrections which topologically correspond to recursive constructions of bubble type diagrams. The main idea is to reduce these subgraphs, replacing them by their equivalent multiregion expansion. One of the main advantages of this integration technique is that it allows one to reduce massive cases with the same degree of difficulty as in the massless case.
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(c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
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AbstractAbstract
[en] Weak and e.m. radiative corrections to vector boson masses are computed. Including corrections due to the presently known leptons and quarks, mass shifts of +3080 and +3310 MeV are obtained for the masses of the charged and neutral vector boson. (orig.)
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Journal Article
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Phys. Lett., B; ISSN 0370-2693;
; v. 91(1); p. 95-98

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AbstractAbstract
[en] The calculation of the radiative corrections in γ-γ processes can be divided into two classes: - contributions from the interferences between the α4 order and the ''virtual'' corrections - ''real'' contributions from the emission of a real photon
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Clermont-Ferrand-2 Univ., 63 - Aubiere (France). Lab. de Physique Corpusculaire; 160 p; 1981; p. 87-96; Seminar on gamma-gamma physics; Clermont-Ferrand, France; 5 - 6 Mar 1981
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Lin, Chia-Min; Cheung, Kingman, E-mail: cmlin@phys.nthu.edu.tw, E-mail: cheung@phys.nthu.edu.tw2009
AbstractAbstract
[en] In this paper, we consider logarithmic radiative corrections and higher order terms to the supersymmetric hilltop F- and D-term hybrid inflation models. Conventional F- and D-term hybrid inflation only predicts ns∼>0.98. We show that via a positive quadratic and a negative quartic correction the spectral index can be reduced to ns = 0.96 suggested from latest WMAP result and also cosmic string problem appeared in SUSY hybrid inflation can be solved with mild tuning of the parameters if κ∼<0.01 for F-term inflation and g∼<0.05 for D-term inflation
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Available from http://dx.doi.org/10.1088/1475-7516/2009/03/012; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Journal of Cosmology and Astroparticle Physics; ISSN 1475-7516;
; v. 2009(03); p. 012

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AbstractAbstract
[en] Radiative corrections to the electromagnetic field of a dyon due to vacuum fluctuations of the scalar charged particles are calculated in the one-loop approximation. It is shown that their contribution antishields the magnetic charge of the dyon and shields its electric charge. 14 refs
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Translated from Yadernaya Fizika; 55: No. 10, 2857-2862(Oct 1992).
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[en] An algorithm is proposed to generate Feynman graphs with up to five loops. The algorithm consumes polynomial time per generated graph. 12 refs., 3 figs., 1 tab
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Translated from Yadernaya Fizika; 56: No. 11, 151-159(Nov 1993).
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