Zobrazeno 1 - 10
of 93
pro vyhledávání: '"H. G. Goovaerts"'
Autor:
H. G. Goovaerts, Robert M. Heethaar, M. ten Bolscher, Th. J. C. Faes, J. C. Netelenbosch, G. W. de Valk-de Roo, W.J.F. van der Vijgh
Publikováno v:
Annals of the New York Academy of Sciences. 873:99-104
An approach to determine intra- and extracellular conduction on the basis of Bode analysis is presented. Estimation of the ratio between intra- and extracellular conduction could be performed by phase measurement only, midrange in the bandwidth of in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b2551d430fee670c07e83cc9dae93f0
https://doi.org/10.1111/j.1749-6632.1999.tb09455.x
https://doi.org/10.1111/j.1749-6632.1999.tb09455.x
Publikováno v:
Annals of the New York Academy of Sciences. 873:388-395
Design concepts for the implementation of two basic functions for measurement of electrical impedance are presented: current injection and voltage measurement. At relatively high frequencies, the application of an alternating current through the body
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f0bbe613e0bd6d3b0ab1781abb01e13
https://doi.org/10.1111/j.1749-6632.1999.tb09488.x
https://doi.org/10.1111/j.1749-6632.1999.tb09488.x
Autor:
J. M. Meijer, R. M. Heethaar, Jan Bakker, H. G. Goovaerts, E. Raaijmakers, Th. J. C. Faes, Peter W.A. Kunst
Publikováno v:
Medical & biological engineering & computing, 36(4), 461-466. Springer Verlag
The study investigates the effects of non-cardiogenic oedema, especially the accumulation of protein in extracellular fluid, on thoracic impedance and proposes a new method of oedema measurement based on an impedance ratio from a dual-frequency measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1b355f2100f6668ff18b723e9e30426
https://doi.org/10.1007/bf02523214
https://doi.org/10.1007/bf02523214
Autor:
Jan Bakker, R. M. Heethaar, Johannes H. Rommes, Peter W.A. Kunst, E. Raaijmakers, H. G. Goovaerts, Th. J. C. Faes
Publikováno v:
Physiological measurement, 19(4), 491-499. IOP Publishing Ltd.
The purpose of this study was to investigate the influence of pulmonary oedema as measured with the double indicator dilution technique on the accuracy of cardiac output (CO) measurement using thoracic impedance cardiography (TIC) compared with therm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e31e450f42507139e2597670f141484a
https://doi.org/10.1088/0967-3334/19/4/004
https://doi.org/10.1088/0967-3334/19/4/004
Autor:
E. Raaijmakers, Th. J. C. Faes, H. G. Goovaerts, J.T. Marcus, Robert M. Heethaar, P M J M de Vries
Publikováno v:
Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.
The purpose of the study was to investigate the resistivity change over the cardiac cycle. This is important for the correct application of thoracic impedance cardiography (TIC). The ratio of spatial mean velocity over the vessel radius of the ascend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::162b5d2dea4ba21eef40915f58c059db
https://doi.org/10.1109/iembs.1996.646338
https://doi.org/10.1109/iembs.1996.646338
Autor:
Robert M. Heethaar, R Gorkink, J. H. Meijer, H. G. Goovaerts, Th J C Faes, A E Hoetink, E H Schuur
Publikováno v:
Physiological measurement. 23(2)
This study investigates whether an arrangement with nine spot electrodes, for thoracic bio-impedance cardiography, can be replaced by an arrangement with five spot electrodes. The study was conducted on 15 healthy subjects, six females and nine males
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b9d8afb2f585ec3ae1beab376a6f024
https://pubmed.ncbi.nlm.nih.gov/12051315
https://pubmed.ncbi.nlm.nih.gov/12051315
Publikováno v:
Annals of the New York Academy of Sciences. 873
In electrical impedance cardiography, Kubicek's formula is often used to measure stroke volume from thoracic impedance variations synchronously to heart activity. To calculate stroke volume from impedance variations, the so-called outflow problem sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a6963dc35be35744487f44fb0aa40b4
https://pubmed.ncbi.nlm.nih.gov/10372160
https://pubmed.ncbi.nlm.nih.gov/10372160
Publikováno v:
Medicalbiological engineeringcomputing. 36(5)
At relatively high frequencies, the application of an alternating current through the body or a body segment results in electromagnetic stray fields which reduce the amount of current actually injected into the tissue under study. This radiation effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d9eff18d38f95a8251672caeaf3f583
https://pubmed.ncbi.nlm.nih.gov/10367444
https://pubmed.ncbi.nlm.nih.gov/10367444
Publikováno v:
Medicalbiological engineeringcomputing. 36(6)
Design considerations and implementation of a multifrequency measuring channel for application in the field of bio-impedance measurement are discussed in this paper. The input amplifier has a differential configuration which is electrically isolated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::296dda0c5cb566fffd59ce52ed0aea2a
https://pubmed.ncbi.nlm.nih.gov/10367469
https://pubmed.ncbi.nlm.nih.gov/10367469
Autor:
Robert M. Heethaar, P M J M de Vries, H. G. Goovaerts, Th. J. C. Faes, J. H. Meijer, E. Raaijmakers
Publikováno v:
Medicalbiological engineeringcomputing. 36(5)
In thoracic impedance cardiography (TIC) measurements the neck electrodes are often positioned at the basis of the neck, close to the neck-thorax transition. Theoretically, this neck-thorax transition will cause inhomogeneities in the current density
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::113ee0822abbe4851f0077b7c7ed1fb9
https://pubmed.ncbi.nlm.nih.gov/10367443
https://pubmed.ncbi.nlm.nih.gov/10367443