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ISSN Online: 2688-7231

ISBN Online: 978-1-56700-524-0

Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
December, 17-20, 2021, IIT Madras, Chennai, India

Computational and Experimental Investigation on the Breast Tumor Depth Characteristics Performed using Infrared Thermography

Get access DOI: 10.1615/IHMTC-2021.1550
pages 1021-1027

Abstract

Thermography is a non-invasive imaging technique that can be applied for early breast cancer detection, by using the temperature distribution of the breast surface. Studies have shown that 1 in 8 women are prone to suffer from breast cancer. Thermography is a safe and affordable method, which can be used for promoting voluntary screening. However, the efficacy of the passive thermography is depending on the tumour depth. In this paper, a simulation study was carried out to find the influence of tumour depth on the thermogram and validated with experimental data. In the simulation study, a computational phantom with a cylindrical anomaly of area 4.71cm2 was used, temperature distribution was evaluated using governing equations and boundary conditions through a simulation. Mathematical modelling was done using Pennes bioheat equation in the FEM method. Agar phantom was used for the experimental analysis, the anomaly (resistor) was kept at various depths. It was supplied with 0.188W power to generate heat that resembles the metabolic heat generation of the tissue, at its steady state. When tumour depth increased from 6 mm to 1.6 mm, thermal contrast was reduced by approximately 2.99K. Active thermography is the method to improve the thermal contrast by an external source. In an electrothermal imaging system, the human body bearable current source is used to increase the temperature of the tumour. In this paper, experimental analysis of the electrothermal imaging had been conducted and obtained the increased thermal contrast of 1K. Compared to other active methods this method provides similar thermal contrast and also minimum hardware cost. Electrothermal imaging could increase the efficacy of this existing method, regardless of tumour depth.
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