Minimizing Tissue Surface Overheating Using Convective Cooling During Laser-Induced Thermal Therapy: A Numerical Study

Author:

Singh Rupesh1,Das Koushik1,Mishra Subhash C.2,Okajima Junnosuke3,Maruyama Shigenao3

Affiliation:

1. Department of Mechanical Engineering, IIT Guwahati, Guwahati, Assam 781039, India e-mail:

2. Professor Mem. ASME Department of Mechanical Engineering, IIT Guwahati, Guwahati, Assam 781039, India e-mail:

3. Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Japan e-mail:

Abstract

Laser-induced thermal therapy (LITT) is a noninvasive medical procedure for treatment of tumors and small lesion. Skin surface overheating and thermal damage to the undesired areas of tissue are two major concerns during thermal therapy. To determine the efficacy of forced convection surface cooling, the present study demonstrates the numerical simulation for minimizing undesired thermal damage. A two-dimensional (2D) axisymmetric cylindrical model is considered with irradiation of continuous wave (cw) laser beam. Bioheat transfer equation in conjunction with radiative transfer equation (RTE) is solved using the finite volume method (FVM) and the discrete ordinate method (DOM). Effect of variation in surface cooling on tissue temperature distribution is studied.

Publisher

ASME International

Subject

Fluid Flow and Transfer Processes,General Engineering,Condensed Matter Physics,General Materials Science

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