MODEL SIMULATION OF BIOLOGICAL DAMAGE IN TISSUE EXPOSED TO CO2-LASER IRRADIATION

被引：7
|
作者：
GERSTMANN, M
SAGI, A
AVIDORZEHAVI, A
KATZIR, A
AKSELROD, S
机构：
来源：
OPTICAL ENGINEERING | 1993年 / 32卷 / 02期
关键词：
BIOMEDICAL OPTICS; LASER IRRADIATION; TISSUE DAMAGE; SIMULATIONS;
D O I：
10.1117/12.60699
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A model that predicts temperature fields in CO2-laser-irradiated tissue is applied in search of the optimal irradiation conditions for the general purpose of soft tissue removal. In a series of single pulse simulations and pulse train simulations the effect of parameters such as pulse durations, irradiance during a pulse, and the repetition rate of pulses are studied. The simulations are carried out for two basic beam profiles: Gaussian and rectangular. As a result, a range of preferred values for each parameter is obtained. The rectangular profile exhibits a far better behavior in the sense that lateral thermal damage is highly reduced compared to the Gaussian profile. Ablation thresholds and efficiencies are calculated for both profiles as a by-product. Results are in good agreement with other reported studies.
引用
收藏
页码：291 / 297
页数：7
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