Total attenuation coefficients of human bladder at different lasers measured by using the direct and indirect methods in vitro
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1.
Institute of Laser Life Science, South China Normal University, Guangzhou 510631, China;
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2.
Department of Cardiothoracic Surgery, First Affiliated Hospital, Sun Yat-sen University of Medical Sciences, Guangzhou 510080, China
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Corresponding author:
XING Da, xingda@hsut.scnu.edu.cn
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Received Date:
2004-06-16
Accepted Date:
2004-12-14
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Abstract
Total attenuation coefficients of normal and cancerous human bladder tissue at 476.5nm,488nm,496.5nm,514.5nm,532nm and 808nm lasers and their linearly polarized laser were determined using the direct and indirect methods,and an integrating-sphere system.The results show that there are significant differences in these total attenuation coefficients of normal or cancerous human bladder tissue at six different wavelengths of laser between the direct and indirect methods(P< 0.05),the differences in the total attenuation coefficients of normal or cancerous human bladder tissue at six different wavelengths between the direct and indirect methods are all obviously bigger than the differences in the total attenuation coefficients of normal or cancerous human bladder tissue at their linearly polarized laser wavelengths between the direct and indirect methods (P< 0.05).
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