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Início Arquivos Representantes Futuras reuniões American Society of Thermal and Fluids Engineering

ISSN On-line: 2379-1748

ISBN Imprimir: 978-1-56700-472-4 (Flash Drive)

ISBN On-line: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

A NUMERICAL STUDY ON ACOUSTIC STREAMING AND TISSUE HEATING DURING MAGNETIC RESONANCE GUIDED HIGH INTENSITY FOCUSED ULTRASOUND THROUGH BLOOD VESSEL WITH AN OBSTACLE

Get access pages 129-141
DOI: 10.1615/TFEC2018.cfd.021810

Resumo

The present work performs a numerical investigation on the effect of Magnetic Resonance guided High Intensity Focused Ultrasound (MRgHIFU) on an obstacle in the blood vessel. A three-dimensional acoustics-thermal-fluid coupling model is employed to compute the acoustic and temperature field around the obstacle through blood vessel. The linear Westervelt equation and conjugate heat transfer equations are used for model construction. Finite Element Method is used to solve the governing equations. Results are shown graphically for the acoustic intensity, acoustic pressure field, temperature rise and velocity distribution at the obstructed region. This three-dimensional numerical study reveals that both the convective cooling and acoustic streaming can considerably change the temperature field at the obstacle through MRgHIFU therapy.
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