www.ksmf.org/arhimed   arhimed@ksmf.org   [5/10/2025 11:40:45 AM] http://www.ksmf.org/arhimed/poglej.asp?id=75 Tridimenzionalni racunalniški model srca za simulacijo temperaturnih sprememb na cloveškem srcu Avtor: Primož Trunk Mentor: doc. dr. Borut Geršak Somentor: doc. dr. Roman Trobec Z razvojem hitrih racunalniških sistemov je postalo mogoce spremljati nekatere biofizikalne procese s pomocjo racunalniških simulacij. Takšne raziskave so lahko cenejše in nenevarne za bolnike, mnogokrat pa tudi edini nacin, kako dobiti vpogled v dolocen biomedicinski problem. Namen našega dela je bil iz fotografij precnih prerezov srca izdelati tridimenzionalni racunalniški model srca in na njem izvesti ohlajanja oziroma segrevanja srca. Želeli smo tudi primerjati simulirane temperature z na modelu živalskega srca izmerjenimi temperaturami. Za izdelavo tridimenzionalnega racunalniškega modela smo uporabili VHD fotografije prerezov srca. Za pomoc pri delu smo uporabili nekaj komercialnih in nekaj lastnih programov. Temperature na živalskih srcih smo merili s posebej prirejenimi temperaturnimi sondami in merilno napravo. Simulacijo smo izvajali na skupini 12 PC racunalnikov. Simulirane temperaturne krivulje imajo podoben potek kot izmerjene. Razlikujejo pa se po absolutnih vrednostih meritev. Posamezne krivulje so si med seboj pomembno razlicne. Opisani tridimenzionalni model je v zdajšnji obliki uporaben za simulacijo smo v dolocenih intervalih posameznih meritev. Z nekaterimi izboljšavami lahko pricakujemo bolj natancno delovanje. «» [Abstract / English version] Simulating human heart temperature changes with three-dimensional computer model of the heart Author: Primož Trunk Mentor: doc. dr. Borut Geršak Co-mentor: doc. dr. Roman Trobec Development of fast parallel computers has enabled us to study some of the biomedical processes with the help of computer simulations. Such studies can be cheaper, and are less dangerous to the patients. Many times, they are the only way to get insight into a particular biomedical problem. The aim of our work was to use the photographs of cross sections of the human heart to build a three-dimensional computer model of the heart and to simulate with it the cooling and warming of the heart. We also wanted to compare the simulated temperatures to the temperatures measured on the animal model heart. For the development of three-dimensional computer model off the heart we used VHD photographs of human heart cross sections. To work with them, we used some of the commercial software packages and some of our programs. Temperatures on animal heart models were measured with specially designed temperature probes, which had to be calibrated first and temperature recording device. The simulation has been done on a cluster of 12 PC computers. Simulated temperature curves have similar course to the measured temperatures. They differ in the absolute values of measurements. These differences are mainly statistically significant. The described three-.dimensional computer model is in the present form usable for simulations in certain intervals of measurements. With some of the further improvements, we can expect more accurate simulations.