基于红外乳腺检测的体表温度分布

Surface temperature distribution based on infrared detection of breast

为了对影响体表温度分布的因素进行分析,建立了患有肿瘤的乳房三维数值模型,模型中用血管树代替了均匀的血液灌注热源项。研究发现血液流动对于乳腺内的组织热状态有着显著影响。由于血管树的存在,乳房表面温度呈现不规律的分布。随着血液流速增加,乳房表面温度升高且逐渐趋于稳定,肿瘤对体表温度分布的影响面积增大,然而由肿瘤参数变化引起的温差与忽略血管树时相比却有所减小。乳腺体表温度分布与乳腺肿瘤关系的研究为红外热像检测乳腺肿瘤提供了基础依据。

To analyze the influential factors of the skin surface temperatttre stribution by establishing a three-dimensional numerical model of a breast with a tumor. And uniform blood perfusion heat source items were replaced by vascular trees in this model. It was found that the blood flow had great impacts on the thermal states of the tissues in the breast. The distribution of surface temperature of the breast was irregular for the presence of vascular trees. With increased blood flow velocity, breast surface temperature increased and tended to be stable gradually. Although the influence area of the tumor on the surface temperature distribution was increased, the temperature difference caused by the change of tumor parameters was reduced compared with the temperature difference under the absence of vascular trees. The basic relationship between surface temperature distribution and breast tumor provided a physical basis for infrared detection of breast cancer.