131. Slikovna diagnostika pri raku materničnega telesaMaja Marolt-Mušič, 2023, published scientific conference contribution Abstract: Globina invazije je poleg patohistoloških značilnosti tumorja in prizadetosti bezgavk najbolj
pomemben prognostičen faktor pri bolnicah z rakom telesa maternice (RTM). Običajno je
transvaginalni UZ, ki ga opravi ginekolog, prva preiskava pri bolnicah z sumom na RTM. UZ
preiskava ima svoje omejitve, predvsem pri oceni globine invazije in oceni prizadetosti
regionalnih in oddaljenih bezgavk. MR preiskava medenice je najbolj zanesljiva metoda za
oceno globine invazije in oceno prizadetosti bezgavk v mali medenici. Mednarodne smernice
se glede uporabe MR preiskave nekoliko razlikujejo. Smernice Evropskega združenja za
urogenitalno radiologijo (ESUR) iz leta 2009 in smernice Ameriškega Collega za radiologijo
ocenjujejo MR preiskavo kot najbolj primerno radiološko metodo za predoperativno oceno oz.
za načrtovanje zdravljenja, medtem ko NCCN smernice priporočajo MR preiskavo pri stadiju II
oz. pri sumu na infiltracijo materničnega vratu.
Keywords: rak maternice, ginekološki raki, ginekološka onkologija
Published in DiRROS: 30.05.2023; Views: 339; Downloads: 124
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134. Model updating concept using bridge Weigh-in-Motion dataDoron Hekič, Andrej Anžlin, Maja Kreslin, Aleš Žnidarič, Peter Češarek, 2023, original scientific article Abstract: Finite element (FE) model updating of bridges is based on the measured modal parameters and less frequently on the measured structural response under a known load. Until recently, the FE model updating did not consider strain measurements from sensors installed for weighing vehicles with bridge weigh-in-motion (B-WIM) systems. A 50-year-old multi-span concrete highway viaduct, renovated between 2017 and 2019, was equipped with continuous monitoring system with over 200 sensors, and a B-WIM system. In the most heavily instrumented span, the maximum measured longitudinal strains induced by the full-speed calibration vehicle passages were compared with the modelled strains. Based on the sensitivity study results, three variables that affected its overall stiffness were updated: Young’s modulus adjustment factor of all structural elements, and two anchorage reduction factors that considered the interaction between the superstructure and non-structural elements. The analysis confirmed the importance of the initial manual FE model updating to correctly reflect the non-structural elements during the automatic nonlinear optimisation. It also demonstrated a successful use of pseudo-static B-WIM loading data during the model updating process and the potential to extend the proposed approach to using random B-WIM-weighed vehicles for FE model updating and long-term monitoring of structural parameters and load-dependent phenomena.
Keywords: monitoring, bridge, viaduct, bridge weigh-in-motion (B-WIM), structural health monitoring (SHM), finite element (FE), calibration, model updating
Published in DiRROS: 29.05.2023; Views: 421; Downloads: 226
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