Influence of scanning velocity on bovine shank bone ablation with pulsed CO_2 laser  

作　　者：张先增 谢树森 叶青 詹振林 

机构地区：[1]Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Techonology,Key Laboratory of Opto-Electronic Science and Technology for Medicine of Ministry of Education,Fujian Normal University [2]Department of Otolaryngology, Fujian Provincial Hospital [3]Provincial Clinical College of Fujian Medical University

出　　处：《Chinese Optics Letters》2009年第2期138-141,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 60578057 and 60878062);Natural Science Foundation of Fujian Province(No. 2008J0317);the Project WKJ2008-2-035 supported by Science Research Foundation of Ministry of Health & United Fujian Provincial Health and Education Project for Tackling the Key Research, P.R.China

摘　　要：The influence of scanning speed on hard bone tissue ablation is studied with a 10.6-μm laser. The groove morphology and the thermal damage created in bovine shank bone by pulsed CO2 laser are examined as a function of incident fluence by optical microscope following standard histological processing. The results show that ablation groove width, depth and ablation volume, as well as the zone of thermal injury, increase gradually with incident fluence. As compared to the result for high scanning speed, the lower scanning speed always produces larger ablation volume but thicker zone of thermal injury. It is evident that scanning speed plays an important role in the ablation process. In clinical applications, it is important to select appropriate scanning speed to obtain both high ablation rates and minimal thermal injury.The influence of scanning speed on hard bone tissue ablation is studied with a 10.6-μm laser. The groove morphology and the thermal damage created in bovine shank bone by pulsed CO2 laser are examined as a function of incident fluence by optical microscope following standard histological processing. The results show that ablation groove width, depth and ablation volume, as well as the zone of thermal injury, increase gradually with incident fluence. As compared to the result for high scanning speed, the lower scanning speed always produces larger ablation volume but thicker zone of thermal injury. It is evident that scanning speed plays an important role in the ablation process. In clinical applications, it is important to select appropriate scanning speed to obtain both high ablation rates and minimal thermal injury.

关 键 词：Ablation BONE LASERS Speed 

分 类 号：TN248.22[电子电信—物理电子学] TN249