一种接口兼容的非接触式呼吸信号检测系统的设计与研究  

Design and Research of an Interface Compatible Non-contacting Respiratory Signal Detection System

作　　者：宋奎[1] 齐家俊[2] 林涛[2] 张逸[2] 

机构地区：[1]重庆医科大学生物医学工程系,超声医学工程重庆市市级重点实验室,重庆市超声医学工程重点实验室-省部共建国家重点实验室培育基地,重庆400016 [2]超声医疗国家工程研究中心,重庆401120

出　　处：《生物医学工程学杂志》2011年第3期465-469,共5页Journal of Biomedical Engineering

摘　　要：呼吸运动引发的体内脏器移位极大影响高强度聚焦超声(HIFU)肿瘤治疗系统的安全性和治疗效率。解决这一问题的关键是实时、准确的呼吸信号检测。以一定角度,用激光束在人体表受呼吸运动影响较大的部位(一般是胸部或背部)投射激光点,用摄像机采集激光点位置信息。描绘激光点位置与采集时刻的关系曲线,即呼吸曲线。该呼吸信号检测方法为非接触式,同时具有接口兼容性好的优点,便于集成到治疗系统中。Respiration-induced displacements of organs greatly affect the safety and efficiency of high intensity focused ultrasound（HIFU） tumor therapy system.The key to solve this problem is accurate,real-time detection of respiratory signals. The present study gives a new design of an interface compatible non-contacting respiratory signal detection system using the method of irradiating the laser beam onto certain region of the surface of human body that is intensely influenced by the breathing movements（mostly the breast or the dorsum） at a certain angle,and meanwhile using a camera to aquire information from the location of the laser projection.Then we can draw a curve of the location of laser projection versus time base,that is the respiration curve.This respiratory signal detection method is non-contacting,interface compatible and easy to be integrated into the treatment system.

关 键 词：呼吸信号 角点检测 最小核值相似区算法 高强度聚焦超声 

分 类 号：TN911.23[电子电信—通信与信息系统]