(英)毫米波皮肤癌检测技术研究
投稿时间:2019-06-04  修订日期:2019-11-21  点此下载全文
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作者单位邮编
杨得富 长春理工大学生命科学技术学院 生命科学技术学院 130022
曹秒  
中文摘要:研究了用于皮肤癌辅助诊断的圆锥形毫米波介电探针。该探针在35GHz下工作,由金属圆形波导和锥形PTFE介电探针组成,基于该介电探针检测S11参数可以有效分辨正常皮肤组织和皮肤癌变组织。基于pennes传热方程建立皮肤传热模型,研究输入功率、辐照时间以及血液灌注对皮肤的温度分布影响。在输入功率低于300mW的毫米波辐照下持续10min,探针周围皮肤的温度始终处于40°C以下的安全范围,当输入功率为300mW-900mW之间时,探针周围温度会超过人体皮肤疼痛阈值。根据Arrhenius损伤模型,当输入功率900mW探针周围半径6.5mm的肿瘤组织呈完全不可逆损伤。
中文关键词:毫米波  皮肤癌  S11参数  生物传热  血液灌注
 
Research on skin cancer detection technology based on millimeter wave
Abstract:A conical millimeter wave dielectric probe for the auxiliary diagnosis of skin cancer was studied. The probe operates at 35 GHz and consists of a metal circular wave-guide and a tapered PTFE dielectric probe. Millimeter wave reflectometry( S11 parameters) are potential diagnostic tools capable of distinguishing between healthy and malignant skin tissue. Based on the Pennes heat transfer equation, a skin heat transfer model was established to study the effects of millimeter wave input power, irradiation time and blood perfusion rate on skin temperature. When the skin was continuously irradiated for 10 minutes with an input power of less than 300 mW, the skin temperature around the probe was always below 40 within a safe temperature range. When the input power was between 300mW and 600mW, the temperature around the probe will exceed the skin pain threshold temperature, According to the Arrhenius injury model, when the input power was 900mW, the tumor tissue with a radius of 6.5 mm around the probe will be in completely irreversible damage state.
keywords:millimeter wave  skin cancer  S-parameter  bioheat transfer  blood perfusion
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