| 微型CT系统适用的心肺运动检测新方法 |
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| 引用本文： | 田丰,梁春峰,郭晓莲,胡广书.微型CT系统适用的心肺运动检测新方法[J].南京航空航天大学学报(英文版),2010,27(1):1-6. |
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| 作者姓名： | 田丰 梁春峰 郭晓莲 胡广书 |
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| 作者单位： | 清华大学生物医学工程系,北京,100084,中国 |
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| 基金项目： | Supported by the National Basic Research Program of China (“973” Program) (2006CB705700)~~ |
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| 摘 要： | 提出了一种非侵入式的心肺门控技术以改善图像分辨率。该方法基于动物的心肺运动实时地产生门控信号，并采用改进的零交叉数法实现对R波的检测，通过热电偶感受动物鼻气流的温度变化以判断其呼吸时相。该门控技术即使对0．03kg左右的小鼠，也能准确产生其在自由呼吸状态下的门控信号。除了非侵人性，与其他现存的门控技术相比，占用更少的空间和成本，可应用于微型CT系统和其他任何需要检测动物心肺运动的系统。几组测试结果表明，所提出的心肺门控能够产生所需信号，并改善图像分辨率。
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| 关 键 词： | 微型CT 呼吸检测 R波检测 门控 |
NEW APPROACH TO DETECT CARDIAC-PULMONARY MOTION FOR MICRO-CT SYSTEM |
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| Tian Feng,Liang Chunfeng,Guo Xiaolian,Hu Guangshu.NEW APPROACH TO DETECT CARDIAC-PULMONARY MOTION FOR MICRO-CT SYSTEM[J].Transactions of Nanjing University of Aeronautics & Astronautics,2010,27(1):1-6. |
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| Authors: | Tian Feng Liang Chunfeng Guo Xiaolian Hu Guangshu |
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| Institution: | Department of Biomedical Engineering/a>;Tsinghua University/a>;Beijing/a>;100084/a>;P.R.China |
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| Abstract: | Non-invasive cardiac-pulmonary gating is proposed to improve the imaging resolution.It produces signals based on the cardiac-pulmonary motion of an animal in real-time.The system with the non-invasive gating consists of a digital signal processor (DSP),an electrocardiography (ECG) detection circuit and a thermocouple circuit.An enhanced R wave detection algorithm based on zero crossing counts is used to adjust the low sample frequency associated with the respiratory rate of an animal.The thermocouple recogn... |
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| Keywords: | micro-computed tomography (CT) respiratory detection R wave detection gating |
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