无损光学法测量胃壁组织对ktp-nd-yag激光的光学特性的差异论文

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1、无损光学法测量胃壁组织对KTP/Nd:YAG激光的光学特性的差异论文.freel和1064nm波长的KTP/Nd:YAG激光的光学特性及其对不同波长的激光的光学特性差异。方法实验采用激光斜入射式空间分辨反射光和CCD探测器以及非线性拟合确定组织光学特性。结果正常人胃黏膜/黏膜下层组织对1064nm的激光的吸收系数(0.145±0.004)mm-1明显地较其对532nm的激光的吸收系数(0.314±0.008)mm-1要小(P＜0.05)，组织样品对1064nm的激光的约化散射系数(0.713±0.019)mm-1明显地较其对532nm的激光的约化

2、散射系数(1.49±0.04)mm-1要小(P＜0.05)，组织样品对1064nm的激光的光学穿透深度(1.73±0.05)mm明显地较其对532nm的激光的光学穿透深度(0.814±0.021)mm要大(P＜0.05)，组织样品对1064nm的激光的漫射系数(0.436±0.011)mm明显地较其对532nm的激光的漫射系数(0.208±0.006)mm要大(P＜0.05)。结论正常人胃黏膜/黏膜下层组织对1064nm的激光的吸收系数与其对532nm的激光的吸收系数的差异为53.8%，其对1064nm的激光的约化散射系数与其对532nm的激光的

3、约化散射系数的差异为52.2%，其对1064nm的激光的光学穿透深度与其对532nm的激光的光学穿透深度的差异为113%，其对1064nm的激光的漫射系数与其对532nm的激光的漫射系数的差异为110%。【关键词】人胃黏膜/黏膜下层组织；光学特性差异；激光；CCD探测器；空间分辨漫反射光NoninvasivemeasurementsfordifferencesinopticalpropertiesofstomachtissuesatKTP/Nd:YAGlaserusingopticalmethods【Abstract】ObjectiveThest

4、udyistodeterminetheopticalpropertiesandtheirdifferencesfornormalhumanstomachmucosa/submucosatissuesinvitroat532and1064nmKTP/Nd:YAGlaser.MethodsThemeasurementsedusingaCCDdetector，andtheopticalpropertiesthemeasurementsusinganobliquelyincidentlaserbeam.freelm-1ofnormalhumanstoma

5、chmucosa/submucosatissuesat1064nmisobviouslysmallerthanthat(0.314±0.008)mm-1ofthetissuesamplesat532nm(P＜0.05)，andthereducedscatteringcoefficient(0.713±0.019)mm-1ofthetissuesamplesat1064nmisobviouslysmallerthanthat(1.49±0.04)mm-1ofthetissuesamplesat532nm(P＜0.05)，andtheopticalp

6、erationdepth(1.73±0.05)mmofthetissuesamplesat1064nmisobviouslybiggerthanthat(0.814±0.021)mmofthetissuesamplesat532nm(P＜0.05)，andthediffusionconstant(0.436±0.011)mmofthetissuesamplesat1064nmisobviouslybiggerthanthat(0.208±0.006)mmofthetissuesamplesat532nm(P＜0.05).ConclusionThe

7、differenceintheabsorptioncoefficientfornormalhumanstomachmucosa/submucosatissuesbetis53.8%，andthedifferenceinthereducedscatteringcoefficientfortissuesamplesbetis52.2%，andthedifferenceintheopticalperationdepthfortissuesamplesbetis113%，andthedifferenceinthediffusionconstantfort

8、issuesamplesbetis110%.【Keyanstomachmucosa/submucosatissue;difference