Measurement Method and Principle for Thoracic Impedance Graph
Thoracic impedance graph is an impedance change curve measured on the surface of the human chest. It reflects indirectly the volume change of the heart and large vessels in the thorax, and it includes rich information about physiological activities and pathological changes. Thoracic impedance graph...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2017-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201712804007 |
| _version_ | 1818351518037835776 |
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| author | Hui Zhao Shi-jiang Kuang Bai-qing He Zi-min Wang Xiao-ling Cheng |
| author_facet | Hui Zhao Shi-jiang Kuang Bai-qing He Zi-min Wang Xiao-ling Cheng |
| author_sort | Hui Zhao |
| collection | DOAJ |
| description | Thoracic impedance graph is an impedance change curve measured on the surface of the human chest. It reflects indirectly the volume change of the heart and large vessels in the thorax, and it includes rich information about physiological activities and pathological changes. Thoracic impedance graph is measured using the four-electrode method in this article. Thoracic impedance change is transformed to the voltage change by means of the high frequency current Io, with a constant root-mean-square (rms) current. The voltage change which is directly proportional to thoracic impedance change can be obtained through the amplification, detection and calibration. The direct proportional relationship between the thoracic impedance change and volume change of the blood vessels is deduced by means of the thoracic parallel impedance model. |
| first_indexed | 2024-12-13T18:39:00Z |
| format | Article |
| id | doaj.art-ec9dbbc76fb345a1a2366a020b1bf5bd |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-13T18:39:00Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-ec9dbbc76fb345a1a2366a020b1bf5bd2022-12-21T23:35:17ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-011280400710.1051/matecconf/201712804007matecconf_eitce2017_04007Measurement Method and Principle for Thoracic Impedance GraphHui ZhaoShi-jiang KuangBai-qing HeZi-min WangXiao-ling ChengThoracic impedance graph is an impedance change curve measured on the surface of the human chest. It reflects indirectly the volume change of the heart and large vessels in the thorax, and it includes rich information about physiological activities and pathological changes. Thoracic impedance graph is measured using the four-electrode method in this article. Thoracic impedance change is transformed to the voltage change by means of the high frequency current Io, with a constant root-mean-square (rms) current. The voltage change which is directly proportional to thoracic impedance change can be obtained through the amplification, detection and calibration. The direct proportional relationship between the thoracic impedance change and volume change of the blood vessels is deduced by means of the thoracic parallel impedance model.https://doi.org/10.1051/matecconf/201712804007 |
| spellingShingle | Hui Zhao Shi-jiang Kuang Bai-qing He Zi-min Wang Xiao-ling Cheng Measurement Method and Principle for Thoracic Impedance Graph MATEC Web of Conferences |
| title | Measurement Method and Principle for Thoracic Impedance Graph |
| title_full | Measurement Method and Principle for Thoracic Impedance Graph |
| title_fullStr | Measurement Method and Principle for Thoracic Impedance Graph |
| title_full_unstemmed | Measurement Method and Principle for Thoracic Impedance Graph |
| title_short | Measurement Method and Principle for Thoracic Impedance Graph |
| title_sort | measurement method and principle for thoracic impedance graph |
| url | https://doi.org/10.1051/matecconf/201712804007 |
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