CAJ | 학술논문

提基于生物组织热传导方程，探讨了强激光辐照生物组织的热传递规律，建立了三层皮肤组织模型，用有限元方法对脉冲激光作用于生物组织时产生的温升进行了数值模拟，给出了皮肤组织的二维瞬态温升云图，研究了激光脉宽、束腰半径等参数对生物组织径向、轴向温度的影响趋势。结果表明，激光束腰半径增大，皮肤组织的径向温升扩散区域及轴向温升深度增大，中心最高温度减小。激光脉宽减小，中心最高温度增大。激光辐照结束后，皮肤组织温升会持续一段时间，达到峰值后逐渐下降。
제기우생물조직열전도방정，탐토료강격광복조생물조직적열전체규률，건립료삼층피부조직모형，용유한원방법대맥충격광작용우생물조직시산생적온승진행료수치모의，급출료피부조직적이유순태온승운도，연구료격광맥관、속요반경등삼수대생물조직경향、축향온도적영향추세。결과표명，격광속요반경증대，피부조직적경향온승확산구역급축향온승심도증대，중심최고온도감소。격광맥관감소，중심최고온도증대。격광복조결속후，피부조직온승회지속일단시간，체도봉치후축점하강。
The rule of heat transfer that is irradiated by high power laser is discussed based on thermal conduction equations of biological tissue .The model of three layer skin tissue is built .The transient temperature distribution generated by pulse laser irradiation in biological tissue is numerical simulated using finite element method .Two -dimension transient temperature rise nephogram is come out .The temperature infection trend of radial and axis in biological tissue is studied because of changing pulse width and waist radius of laser .The results show that radial temperature rise area and axis temperature rise depth in biological tissue increase with increasing waist radius .And the highest temperature of center in biological tissue decrease .The highest temperature of center in biological tissue increased with decreasing pulse width of laser .When skin tissue canceled out laser irradiation ,the temperature rise in biological tissue should be able to last a long time .And the temperature will descend under reaching the peak .