小肠胶囊内镜拍摄性能的定量临床评价方法探索  

Quantitative clinical evaluation method for small intestine capsuleendoscope

作　　者：吴建芳 贾文 马婷 刘友鑫 WU Jian-fang;JIA Wen;MA Ting;LIU You-xin(School of Electrical Engineering and Information,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学电气信息学院,成都610500

出　　处：《医疗卫生装备》2023年第10期28-32,共5页Chinese Medical Equipment Journal

摘　　要：目的:探讨小肠胶囊内镜拍摄性能的定量临床评价方法。方法:将国内外2款主流小肠胶囊内镜置于纯黑、无光环境中,模拟胶囊内镜在消化道场景中运动并采集图像,分析胶囊内镜的传输帧速率和照明闪烁时间的变化,并基于研究结果提出评价胶囊内镜拍摄性能的方法。结果:国内主流小肠胶囊内镜运行4 min后出现传输帧速率降低现象,且每帧对应一次不固定时长的照明闪烁时间;国外主流小肠胶囊内镜未发现明显传输帧速率降低现象,且每帧对应一次固定时长和一次不固定时长的照明闪烁时间。当遇到光学反射特性差异大的场景时,国内主流小肠胶囊内镜调节曝光需2~12帧,而国外主流小肠胶囊内镜能够立即调节曝光。基于该研究结果提出应从拍照性能与视频性能2个方面对胶囊内镜静态与动态时拍摄得到的图像进行评估的定量评价方法。结论:定量评价胶囊内镜在光学反射特性变化大的消化道场景中的拍摄性能可以更加体现其临床价值,该研究为胶囊内镜的产品性能对比和临床评价提供了新的思路。Objective To study the quantitative clinical evaluation method for the photography performance of the small intestine capsule endoscope.Methods Two mainstream small intestine capsule endoscopes in the world were placed into a pure black and light-free environment to simulate the movement of the capsule endoscopes in the digestive tract,and the images were captured to analyze the changes in the transmission frame rate and lighting flicker time of the capsule endoscopes,then a quantitative clinical evaluation method for the photography performance of the small intestine capsule endoscope was proposed based on the study results.Results The China-made capsule endoscope showed a decrease in transmission frame rate after 4 min of operation,and each frame corresponded to a lighting flicker of variable duration;the capsule endoscope from other countries had not any obvious decrease in transmission frame rate,and each frame corresponded to a lighting flicker of fixed duration and another one of variable duration.In case of large differences in optical reflection characteristics,the China-made endoscope required 2-12 frames to adjust exposure,while the other endoscope was able to adjust exposure immediately.Based on the results above a method was proposed for quantitatively evaluating the images obtained from the capsule endoscopes at static and dynamic states in terms of photography performance and video performance.Conclusion Quantitatively evaluating the performance of capsule endoscopes in gastrointestinal scenarios with highly variable optical reflectance characteristics contributes to reflecting their clinical value,and a new idea is provided for performance comparison and clinical evaluation of capsule endoscopes.

关 键 词：胶囊内镜 拍摄性能 拍照性能 视频性能 定量评价 

分 类 号：R318.6[医药卫生—生物医学工程] TH773[医药卫生—基础医学]