摘要
目的:针对现代光动力治疗仪照射光的色纯度和利用率不高等缺点,设计一种新型光子晶体光动力治疗仪。方法:利用传输矩阵法得到光子晶体禁带特性,通过Matlab仿真甄选光子晶体材料和掺杂介质材料,采用光子透射率高、带宽窄结构为(AB)_5C(BA)_5(其中,A为碲化镉,B为二氧化硅,掺杂层C为五氧化二钽)的一维光子晶体设计。结果:该治疗仪很好地滤除了光源波长中光动力疗法的治疗窗口之外的杂波,大幅改善了照射光的色纯度和利用率,提升了光动力治疗癌症的效率。结论:该治疗仪具有自动监测和控制功能,使用方便、操作简单,提高了光动力疗法治疗一定体表深度癌症病灶的疗效。
Objective To design a new type of photonic crystal photodynamic therapy instrument to overcome the deficiencies of the existing one in light color purity and utilization rate. ~ The bandgap properties of photonic crystals were determined through transmission matrix, and appropriate photonic crystal materials and dielectric materials were elected through Matlab programming. （AB）5C （BA）5 one-dimensional photonic crystal was adopted in which media A was CdTe, media B was SiO2, and media C was Ta2O5. Results The instrument filtered the clutter out of the treatment window and improved greatly the color purity of irradiation light and efficiency of photodyuamic irradiation, and enhanced the efficiency for cancer therapy. Conclusion The instrument realizes automatic monitoring and control, and increases the therapy efficacy for the cancer in certain depth of skin.
出处
《医疗卫生装备》
CAS
2016年第2期38-39,44,共3页
Chinese Medical Equipment Journal
基金
国家自然科学基金项目(U1404824)
关键词
光动力治疗仪
光子晶体
光子禁带
治疗窗口
photodynamic therapy instrument
photonie crystal
photonic bandgap
treatment window
