Experimental study on high-frequency ultrasound observation of ultra-pulse CO 2 fractional laser penetrating hypertrophic scars
10.3760/cma.j.cn431274-20240805-01194
- VernacularTitle:高频超声观测超脉冲CO 2点阵激光穿透增生性瘢痕的实验研究
- Author:
Chengli LI
1
;
Xiaohui XIA
;
Huawei OUYANG
Author Information
1. 湖南省人民医院(湖南师范大学附属第一医院)整形激光美容科，长沙 410005
- Publication Type:Journal Article
- Keywords:
Lasers, carbon dioxide;
High-frequency ultrasound;
Hypertrophic cicatrix
- From:
Journal of Chinese Physician
2024;26(12):1841-1845
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the accuracy and reliability of high frequency ultrasound in measuring the penetration depth of hypertrophic scar with ultra-pulse CO 2 fractional laser. Methods:From February 2022 to February 2023, 10 cases of hypertrophic scar tissue underwent surgical resection in the Hunan Provincial People′s Hospital were collected. After irradiating the hypertrophic scar tissue with different energy ultra-pulse CO 2 dot matrix laser, high-frequency ultrasound was used to observe and identify the laser gasification holes and tissue degeneration areas in the scar. The same scar tissue was histopathically sliced and the images of laser vaporized pores and tissue degeneration area were collected after hematoxylin-eosin (HE) staining, and the correlation and consistency of the two results of high-frequency ultrasound and pathological tissue section were compared and analyzed. Results:There was a strong positive correlation between the results of laser channel depth measured by pathological section and the results of laser channel depth measured by high-frequency ultrasound and the depth of tissue degeneration area ( r=0.976, 0.927, all P<0.001). Among them, the results of pathological section and high-frequency ultrasound measured laser channel depth were highly consistent, and could be used interchangeably in clinical work. Conclusions:High-frequency ultrasound can be used to evaluate the change of scar internal condition after ultra-pulsed CO 2 dot matrix laser irradiation, and measure the penetration depth of laser on scar tissue. The measurement results have high accuracy and reliability.
