人体电阻抗技术中场扰动理论及其应用
THEORY AND APPLICATION OF FIELD PERTURBATION TO ELECTRICAL IMPEDANCE TECHNIQUE FOR MEDICINE
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摘要: 本文提出了人体电阻抗的场扰动理论分析方法。文中证明了电导率变化引起恒流场和恒压场扰动的基本公式、修正G-L公式以及声场诱发电场扰动公式。本文还介绍了上述理论在电声门图方法中的应用结果。
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关键词:
- 人体电阻抗技术; 电场扰动; 电声门图
Abstract: A new approach called perrurbation theory is presented to analyze the electri-cal impedance for medicine. The formula of constant voltage and constant current field per-turbation, modified G-L formula and the formula of electrical field perturbation evoked by sound field are derived. The applicafion resnlts of the theory in electroglottographic method are also introduced. -
E. C. Peanep, CRC Critical Rcviemt in Biomedical Engineering, 13(1985), 227-281.[2]R. Pethhing, Clinical Physics and Physiological Measurement, 8(1987), Suppl. A, 5-12.[3]A. D. Seagar, et al., Clinical Physics and Physilogical Measurement, 8(1987), Suppl. A, 13-31.[4]D. G. Childer, CRC Critical Reviews in Biomedical Engineering, 12(1985), 131-161.[5]D. B. Geselowitze, IEEE Trans. on BME, BME-18(1971), 38-41.[6]J. Lehr, IEEE Trans. on BME, BME-19(1972), 156-157.[7]万明习等,中国医疗器械杂志,13(1989)025-129.[8]万明习等,中国医疗器械杂志,14(1990),1-6. -
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