| 人颅脑模型内阻抗扰动的电阻抗断层成像测量敏感性研究 |
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| 引用本文： | 史学涛,尤富生,付峰,刘锐岗,漆家学,徐灿华,董秀珍.人颅脑模型内阻抗扰动的电阻抗断层成像测量敏感性研究[J].医疗卫生装备,2011,32(5):1-3. |
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| 作者姓名： | 史学涛 尤富生 付峰 刘锐岗 漆家学 徐灿华 董秀珍 |
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| 作者单位： | 第四军医大学生物医学工程学院医学电子工程教研室,西安,710032 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金面上项目，国家科技支撑计划项目 |
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| 摘 要： | 目的：研究EIT技术对颅内不同区域病变的敏感性。方法：建立一个可相对准确地模拟脑部电阻率分布及其变化的物理模型,并通过实际的数据测量、图像重构与数值分析的方法,研究EIT技术对于颅内不同位置处的弱电阻率扰动的检测敏感程度。结果：当电极系统与扰动处于同一平面时,可以获得较好的敏感性;而选择模型的中间层电极进行EIT数据采集时,可以保证对模型内各位置处的扰动检测效果。结论：通过合理的电极位置选择,EIT技术可以实现颅内病变的准确检测。
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| 关 键 词： | 电阻抗断层成像 物理模型 敏感性 |
Sensitivity Research on Detection of Impedance Distortion inside Human Head Phantom by Electrical Impedance Tomography Method |
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| SHI Xue-tao,YOU Fu-sheng,FU Feng,LIU Rui-gang,QI Jia-xue,XU Can-hua,DONG Xiu-zhen.Sensitivity Research on Detection of Impedance Distortion inside Human Head Phantom by Electrical Impedance Tomography Method[J].Chinese Medical Equipment Journal,2011,32(5):1-3. |
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| Authors: | SHI Xue-tao YOU Fu-sheng FU Feng LIU Rui-gang QI Jia-xue XU Can-hua DONG Xiu-zhen |
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| Institution: | SHI Xue-tao,YOU Fu-sheng,FU Feng,LIU Rui-gang,QI Jia-xue,XU Can-hua,DONG Xiu-zhen(Medical Electronic Engineering Department,Biomedical Engineering School,the 4th Military Medical University,Xi'an 710032,China) |
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| Abstract: | Objective To study the sensitivity of electrical impedance tomography(EIT) technique in detection of disease that located at different areas inside the human brain.Methods A physical phantom was built to precisely simulate the brain resistivity distribution and its change.Based on date acquisition,image reconstruction and numerical analysis,we investigated the detection sensitivity of EIT with minor resistivity distortion in different positions of the brain.Results Better sensitivity could be gotten when el... |
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| Keywords: | electrical impedance tomography physical phantom sensitivity |
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