摘要
为了研究不同颜色吸收体对光声成像的影响,采用针状的PVDF膜水听器,接收面积的直径为1 mm,光源为YAG激光器,波长为1 064 nm,重复频率为20 Hz,脉宽为6 ns。由仿真结果表明,暗红、深红、红色对激光波长吸收较好,而淡红色对激光波长吸收较差;同样由实验结果表明,黑色的头发和橡胶环对激光的吸收比淡红色的猪肝的吸收要强一些。
In order to study the influence from different color absorption on photoacoustic imaging, a needle PVDF hydrophone with diameter of lmm was used to detect photoacoustic signals; the laser had a pulse width of 6 ns and a repetition frequency of 20 Hz. The images of different gray scale absorption were obtained from experiments and simulation. The simulation results show that the strong absorption can be observed when the laser irradiates on dull-red, crimson and red absorbers, however the absorption ability is weak to rosiness; we also find that the absorption of black hairs or rubber ring is stronger than rosiness pork liver by experiments.
出处
《应用激光》
CSCD
北大核心
2011年第5期443-445,共3页
Applied Laser
基金
陕西省科技厅基础研究资助项目(项目编号:2011JM1016)
陕西省教育厅基础研究资助项目(项目编号:11JK0930)
关键词
医用光学与生物技术
光声成像
不同吸收
medical optics and biotechnology： photoacoustic imaging~ different absorption
