Ohřev biologických roztoků pomocí elektromagnetického pole
Title Alternative:Heating of Biomedical Solutions Using Electromagnetic Field
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Práce se věnuje výzkumu interakce fyziologického roztoku a krevního fantomu s elektromagnetickým polem.Teoretická část předkládá teoretický základ pro mikrovlnný ohřev a jeho problematiku a rešerši technologií mikrovlnného ohřevu v průmyslu a ve zdravotnictví. Dále také popis biologických roztoků ? krve a fyziologického roztoku a přehled existujících možností jejich ohřevu. Praktická část se poté zabývá problematikou fantomu krve. Je navržen fantom s termokapacitními vlastnostmi podobnými krvi pro budoucí pokusy. Další oddíly praktické části se věnují zkoumání vhodnosti tohoto fantomu a možnostem jeho ohřevu. Jako první je zhodnocena absorpce výkonu ve vlnovodu, poté pomocí termokamery ohřev v mikrovlnné troubě a nakonec ohřev a chlazení v klimakomoře.Výzkum prokázal, že krevní fantom má pro vybranou frekvenci 2450MHz velmi dobrou vnímavost, dále že statický ohřev v mikrovlnné troubě není vhodný pro ohřev biologických roztoků vzhledem k tvorbě takzvaných hot-spotů, pokus v klimakomoře poté že krevní fantom vychládá z vysokých teplot v rámci objemu vcelku rovnoměrně. Všechny experimenty byly pro srovnání prováděny také pro fyziologický roztok.
Thesis is devoted to research of the interaction of saline or blood phantom with electromagnetic field.The theoretical part gives theoretical basis for microwave heating and its issues, technology research of microwave heating in industry and health. It also describes biological solutions such as blood and saline and it also gives summary of existing heating technologies for biological solutions. The practical part deals with issues of blood phantom. Blood phantom with similar heat-capacitive characteristics as real blood is designed for future experiments. In another part is researched suitability of blood phantom and possibilities of its heating. First, there is evealuated heating of blood phantom in waveguide and checking its absorption, then photoshooting solutions in microwave oven during heating and at the end heating and also cooling in climabox.Experiments prooved, that blood phantom has for frequency of 2450MHz very good absorption, also that static heating in microwave oven is not suitable for heating of biomedical solutions because of forming of hot-spots. Experiment in climabox prooves, that blood phantom is growing cool approximately the same at all spots. All of the experiments were performed also with saline for comparison.
Thesis is devoted to research of the interaction of saline or blood phantom with electromagnetic field.The theoretical part gives theoretical basis for microwave heating and its issues, technology research of microwave heating in industry and health. It also describes biological solutions such as blood and saline and it also gives summary of existing heating technologies for biological solutions. The practical part deals with issues of blood phantom. Blood phantom with similar heat-capacitive characteristics as real blood is designed for future experiments. In another part is researched suitability of blood phantom and possibilities of its heating. First, there is evealuated heating of blood phantom in waveguide and checking its absorption, then photoshooting solutions in microwave oven during heating and at the end heating and also cooling in climabox.Experiments prooved, that blood phantom has for frequency of 2450MHz very good absorption, also that static heating in microwave oven is not suitable for heating of biomedical solutions because of forming of hot-spots. Experiment in climabox prooves, that blood phantom is growing cool approximately the same at all spots. All of the experiments were performed also with saline for comparison.