| 胸部体表导纳变化与胸腔中血管导纳变化的关系 |
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| 引用本文： | 肖秋金,况明星,文萍,舒莉,冀建峰. 胸部体表导纳变化与胸腔中血管导纳变化的关系[J]. 中国医学物理学杂志, 2008, 25(5): 851-855 |
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| 作者姓名： | 肖秋金 况明星 文萍 舒莉 冀建峰 |
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| 作者单位： | 1. 解放军第九四医院特诊科,江西,南昌,330002
2. 南昌大学,医学院物理教研室,江西,南昌,330006 |
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| 基金项目： | 南京军区医学科学技术研究项目 |
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| 摘 要： | 目的：探讨胸部体表导纳变化与胸腔中血管导纳变化的关系。方法：根据导纳与阻抗互为倒数的关系，导出胸部体表导纳变化公式，并用模型实验证明。结果：单根血管在胸部体表引起的导纳变化与血管本身的导纳变化和基础导纳的比值成正比，与血管的长度和胸部体表两检测电极之间的基础导纳成正比，与血管到两检测电极连线的距离成反比；多根血管在胸部体表共同引起的导纳变化等于各血管单独在胸部体表产生的导纳变化的代数和，即在电导纳图测量中导纳变化遵从标量迭加原理。结论：本文结果可为心导纳图的波形重建奠定理论基础。
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| 关 键 词： | 胸部体表导纳变化 血管导纳变化 关系 导纳变化迭加 模型实验 |
Relation between Admittance Change on Chest Surface and Admittance Change of Blood Vessel in Thorax |
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| XIAO Qiu-jin,KUANG Ming-xing,WEN Ping,SHU Li,JI Jian-feng. Relation between Admittance Change on Chest Surface and Admittance Change of Blood Vessel in Thorax[J]. Chinese Journal of Medical Physics, 2008, 25(5): 851-855 |
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| Authors: | XIAO Qiu-jin KUANG Ming-xing WEN Ping SHU Li JI Jian-feng |
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| Affiliation: | XIAO Qiu-jin1,KUANG Ming-xing2,WEN Ping1,SHU Li1,JI Jian-feng1(1.Department of Special Diagnosis,PLA 94 Hospital,Nanchang Jiangxi 330002,China,2.Department of Medical Physics,Medical College of Nanchang University,Nanchang Jiangxi 330006,China) |
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| Abstract: | Objective: The aim of this study is to investigate the relation between the admittance change on the chest surface and the admittance change of blood vessel in thorax.Methods: On the basis of the reciprocal relation between the admittance and impedance,the formula of the admittance change on the chest surface are deduced,and they is proved with the model experiment.Results: The admittance change,caused by a single blood vessel on the chest surface,is directly proportional to the ratio of the admittance chan... |
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| Keywords: | admittance change on chest surface admittance change of blood vessel relation Superposition of admittance changes model experiment |
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