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Title:Numerična simulacija dinamične termografije : diplomsko delo
Authors:ID Sarjaš, Blaž (Author)
ID Iljaž, Jurij (Mentor) More about this mentor... New window
Files:.pdf UN_Sarjas_Blaz_2025_nova.pdf (2,79 MB)
MD5: 8C3CC323118BC8B35A8CC34B80506AAE
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V diplomskem delu je obravnavana numerična simulacija dinamične termografije. Termografija je brezkontaktna in neinvazivna tehnika za merjenje temperature. Obravnavali smo prenos toplote med tumorjem in okoliškim tkivom, ki temelji na Pennesovem numeričnem modelu, kateremu sta dodana toplotni izvor in ponor zaradi perfuzijskega pretoka in metabolizma. Za modeliranje temperaturne odvisnosti metabolizma in perfuzijskega pretoka smo uporabili van’t Hoffov efekt. Cilj diplomske naloge je dokazati prednosti dinamične termografije pred statično in določiti temperaturno odvisnost perfuzijskega pretoka in metabolizma celic. V prvem delu diplomske naloge je prikazana razlika med konstantnimi vrednostmi in termoregulacijskim modelom. Ugotovili smo, da pri termoregulacijskem modelu z vrednostjo koeficienta 1,1, dosegamo nižje temperaturne razlike na površini kože kot pri konstantnih vrednostih metabolizma in perfuzijskega pretoka. V nadaljevanju smo primerjali vpliv različnih vrednosti koeficientov perfuzijskega pretoka in metabolizma. Ugotovili smo tudi, da pri dinamični termografiji dosegamo višje temperaturne razlike na površini kože kot pri statični. Na koncu smo obravnavali vpliv časa in temperature hlajenja, ugotovili smo, da se temperaturna razlika med tumorjem in okoliškim tkivom povečuje z nižanjem temperature ohlajanja in večanjem časa podhladitve.
Keywords:termografija, perfuzijski pretok krvi, termoregulacija, numerična simulacija, termoregulacijski model, tumor
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[B. Sarjaš]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (VII, 40 f.))
PID:20.500.12556/DKUM-94580 New window
UDC:519.6:772.96(043.2)
COBISS.SI-ID:254664195 New window
Publication date in DKUM:02.10.2025
Views:142
Downloads:29
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:21.08.2025

Secondary language

Language:English
Title:Numerical simulation of dynamic thermography
Abstract:The thesis discusses the numerical simulation of dynamic thermography. Thermography is a non-contact and non-invasive technique for measuring temperature. We studied heat transfer between a tumor and the surrounding tissue, based on Pennes’ numerical model, to which a heat source and sink due to perfusion flow and metabolism were added. To model the temperature dependence of metabolism and perfusion flow, we used the van’t Hoff effect. The aim of the thesis is to demonstrate the advantages of dynamic thermography over static thermography and to determine the temperature dependence of cellular metabolism and perfusion flow. In the first part of the thesis, the difference between constant values and the thermoregulatory model is presented. We found that, with a thermoregulatory model using a coefficient value of 1.1, we observe lower temperature differences on the skin surface compared to constant values of metabolism and perfusion flow. Subsequently, we compared the influence of different coefficient values for perfusion flow and metabolism. We also found that dynamic thermography yields higher temperature differences on the skin surface than static thermography. Finally, we examined the impact of cooling time and temperature. We found that the temperature difference between the tumor and surrounding tissue increases with lower cooling temperatures and longer cooling durations.
Keywords:thermography, perfusion blood flow, thermoregulation, numerical simulation, thermoreguation model, tumour


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