Thermal change on optical penetration depth in human prostatic hyperplasia tissue in vitro

WEI Hua-jiang; XING Da; HE Bo-hua; WU Rong-hai; GU Huai-min; WU Guo-yong; CHEN Xue-mei

LASER TECHNOLOGY > 2008 > 32(3): 244-247.

WEI Hua-jiang, XING Da, HE Bo-hua, WU Rong-hai, GU Huai-min, WU Guo-yong, CHEN Xue-mei. Thermal change on optical penetration depth in human prostatic hyperplasia tissue in vitro[J]. LASER TECHNOLOGY, 2008, 32(3): 244-247.

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Thermal change on optical penetration depth in human prostatic hyperplasia tissue in vitro

1.
MOE Key Laboratory of Laser Life Science, Institute of Laser Life Science, South China Normal University, Guangzhou 510631, China;
2.
Department of Surgery, Department of Clinical Medicine, Guangdong College of Pharmacy, Guangzhou 510224, China;
3.
Department of Urology, Central Hospital of Jiangmen, Jiangmen 529071, China;
4.
Department of Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China;

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Received Date: March 05, 2007
Revised Date: May 09, 2007
Published Date: June 24, 2008

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Abstract

Abstract

Thermal change and its difference on the optical penetration depth of human benign prostatic hyperplasia(BPH) tissue was measured with a double-integrating-sphere setup at 532nm,670nm,830nm and 1064nm. The optical properties of BPH tissue were assessed from the measurement results using the inverse adding-doubling method.The results of measurement showed that,in exposure temperature range from 20℃ to 80℃,the optical penetration depth of BPH tissue at 532nm,670nm,830nm and 1064nm increased with increase of wavelengths,the optical penetration depth of BPH tissue at 532nm,670nm,830nm and 1064nm varied with a change of exposure temperature by thermal effect,change of the optical penetration depth of BPH tissue at 1064nm was significantly bigger than that of BPH tissues at 532nm,670nm and 830nm,respectively with increase of exposure temperature.Maximal optical penetration depths of BPH tissue at 532nm,670nm,830nm and 1064nm were respectively 0.404mm,0.539mm,0.699mm and 5.917mm at exposure temperature of 50℃,50℃,50℃ and 70℃,respectively,andminimal optical penetration depths were respectively 0.251mm,0.449mm,0.621mm and 1.542mm at exposure temperature of 20℃,20℃,80℃ and 60℃.The results of measurement indicated a few useful reference data for treatment of BPH using optical and thermal properties of laser.

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