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COMPUTATIONAL AND EXPERIMENTAL ANALYSIS OF NEWBORN BRAIN COOLING PROCESS

DOI: 10.1615/ICHMT.2017.CHT-7.210
pages 139-145

Andrzej J. Nowak
Institute of Thermal Technology Silesian University of Technology 44-100 Gliwice, Konarskiego 22, Poland

Marek Rojczyk
The Institute of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Konarskiego 22, Poland

Jakub Klim
Institute of Thermal Technology, Silesian University of Technology, Gliwice, Poland

Joanna Laszczyk
C&C Technology, Sosnowiec, Poland

Wojciech Walas
University Clinical Hospital in Opole, Department of Children Intensive Care, 45-418 Opole, Al. Witosa 26, Poland

Abstract

This paper presents the computational model of neonate's whole body model which is used to simulate selective brain cooling process. Model is based on Pennes bioheat equation and its parameters have been found carrying out an inverse analysis (based on minimisation of the standard least-square objective function) and utilising some thermal measurements collected during real therapy. Model is then verified and tuned by monitoring of the volume flow rate and temperatures of a cooling fluid flowing through a cooling cap. This allows to determine time history of the heat flux transferred during brain cooling process from the patient head to the cooling fluid which helps to understand process better and fully control it. At the same time developed computational model simulates the hypothermic therapy reasonably well and allows to predict parameters of that process fairly accurate.

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