https://scholars.lib.ntu.edu.tw/handle/123456789/451689
Title: | Image based simulation for liver tumor ablation by focused ultrasound | Authors: | Solovchuk, M.A. Sheu, T.W.H. Thiriet, M. TONY W. H. SHEU |
Keywords: | 3D reconstruction; Blood flow; HIFU; Liver tumor | Issue Date: | 2015 | Journal Volume: | 47 | Start page/Pages: | 88-91 | Source: | IFMBE Proceedings | Abstract: | The present computational model is aimed at predicting the temperature field in a region of the hepatic parenchyma with a cancer resulting from applied highintensity focused ultrasounds (HIFU) for thermal ablation of the tumor in a patient-specific geometry. The threedimensional (3D) acoustic–thermal–hydrodynamic coupling model computes the pressure, temperature, and blood velocity fields expressed by the nonlinear Westervelt equation with relaxation effects and bioheat equations in both the hepatic parenchyma and blood vessels (sink). The classical nonlinear Navier–Stokes equations related to mass and momentum conservation in large hepatic blood vessels are employed both for convective cooling and acoustic streaming. This 3D three-field coupling demonstrates that both convective cooling and acoustic streaming change the temperature considerably near large blood vessels. In addition, acoustic streaming cannot be neglected due to resulting velocity magnitude and blood redistribution between different branches. The results presented in the current work can be further used to construct a surgical planning platform. ? Springer International Publishing Switzerland 2015. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/451689 | DOI: | 10.1007/978-3-319-11128-5_25 | SDG/Keyword: | Ablation; Acoustic fields; Acoustic streaming; Biochemical engineering; Biomedical engineering; Blood; Computational geometry; Cooling; Navier Stokes equations; Nonlinear equations; Tumors; Ultrasonics; Velocity; 3D reconstruction; Blood flow; HIFU; High intensity focused ultrasound; Hydrodynamic coupling; Image-based simulations; Liver tumors; Momentum conservations; Blood vessels |
Appears in Collections: | 工程科學及海洋工程學系 |
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