作 者：
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机构地区：
陕西理工大学物理与电信工程学院物理系
出 处：
《陕西理工学院学报（自然科学版）》
2007年第4期68-71,共4页
摘 要：
基于组织纯吸收理想模型,研究了组织吸收对穿透光强的影响,得出激光在组织中特定穿透深度时光强与吸收系数的关系曲线,结合各种波长激光在血红蛋白中的吸收系数,提出了激光在血红蛋白中的有效穿透深度分别为d≤1 cm,1 cm
Based on the ideal model of pure absorption of tissues, the article first discusses the influ- ences of the absorption of tissue upon the intensity of penetrating light. Then it concludes the formation of a relational curve of the intensity of laser and absorption coefficient when laser penetrates into the certain depth of the tissue. Combined with the absorption coefficients of different laser wavelengths in hemoglobin, it concludes that if laser penetrates such depths through tissue as d ≤1cm, 1cm 〈 d ≤〈2cm, 2cm 〈 d≤3cm, 3cm 〈 d≤ 4cm, the absorption coefficients of the tissue will be 1.0cm^-1, 0.5cm^-1, 0.33cm6-1, 0.25 cm^-1 respectively. Thus the pulse laser with the wavelengths of 530nm, 630nm, 650nm, 760nm will be used to meet the demands of the depth of photoacoustic imaging, and to form high-contrast constructed image.
关 键 词：
生物医学
光声成像
吸收系数
波长
穿透深度
领 域：
[生物学]
