Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Brian C. Hodgkin"'
Publikováno v:
Journal of Electrocardiology. 23:137-145
Myocardial infarctions were produced in young domestic farm pigs by ligating coronary arteries. Arteries ligated in four groups were (A) left anterior descending, (B) branches of left anterior descending, (C) left circumflex, and (D) right coronary a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09facc1ee445e39a892ed6c003c57062
https://doi.org/10.1016/0022-0736(90)90134-n
https://doi.org/10.1016/0022-0736(90)90134-n
Autor:
Clifford V. Nelson, Brian C. Hodgkin
Publikováno v:
Annals of Biomedical Engineering. 17:437-455
We have measured magnitude and location of heart dipole moment during QRS in 46 New Zealand white rabbits. The spatial magnitude curve had one to three peaks. Mean values were M1 = 80 +/- 10 microA-cm (N = 5) pointing to right anterior and caudal, M2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4f5fa221fe65b87da5554f7d51adc70
https://doi.org/10.1007/bf02368061
https://doi.org/10.1007/bf02368061
Autor:
Clifford V. Nelson, Brian C. Hodgkin
Publikováno v:
IEEE Transactions on Biomedical Engineering. :817-823
The Gabor-Nelson equations are derived for the determination of the magnitudes, directions, and locations of two independent dipoles in a two-dimensional conducting region from boundary potential measurements. Eight equations were derived for the eig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::392fc26b4317cd387ed23893bccc2f19
https://doi.org/10.1109/tbme.1981.324681
https://doi.org/10.1109/tbme.1981.324681
Publikováno v:
American Heart Journal. 95:220-227
Vector dipole moments were measured on young pigs before and one week after ligation of the left anterior descending coronary artery. Vectors were obtained for the three peaks of vector spatial magnitude, M. Preoperative, postoperative, and differenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cc3970338674db80b17467eae155329
https://doi.org/10.1016/0002-8703(78)90466-0
https://doi.org/10.1016/0002-8703(78)90466-0
Publikováno v:
Journal of Electrocardiology. 9:123-128
Vectorcardiograms were obtained from 50 young domestic pigs using the Nelson lead system. Compensation for body size and shape is achieved and the resultant dipole moment magnitude reflects heart size. A strong relationship was found between heart si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::525d79a7e9713a17e18682d2f6df0cc2
https://doi.org/10.1016/s0022-0736(76)80064-7
https://doi.org/10.1016/s0022-0736(76)80064-7
Publikováno v:
IEEE Transactions on Power Apparatus and Systems. :1388-1391
Electric shock frequently causes the arrest of breathing. This paper reports on an experimental investigation of this phenomenon. A convulsion is a likely consequence of a high voltage shock applied to the extremities. It is suggested that this convu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e07d234b928d8e29e256f0b7c59631a
https://doi.org/10.1109/tpas.1973.293546
https://doi.org/10.1109/tpas.1973.293546
Publikováno v:
Journal of electrocardiology. 8(2)
Based on the Gabor-Nelson equations a technique is described for measuring the location of the resultant heart dipole (locus-cardiogram). The technique uses three rows of eight electrodes, a head and a foot lead. Experiments with a male and a female
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8baa95d27f4960054d84681d4b7ba1f
https://pubmed.ncbi.nlm.nih.gov/1151194
https://pubmed.ncbi.nlm.nih.gov/1151194
Autor:
Brian C. Hodgkin, Clifford V. Nelson
Publisher Summary This chapter focuses on analog computation of cardiac dipole location. It presents a lead system developed by Nelson, et al. for determining the three orthogonal magnitude components of the resultant dipole of the in vivo heart. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5a7c02858dd76a348a92c0fde89555f
https://doi.org/10.1016/b978-0-08-022678-1.50075-8
https://doi.org/10.1016/b978-0-08-022678-1.50075-8
Autor:
Clifford V. Nelson, Brian C. Hodgkin
Publikováno v:
Journal of electrocardiology. 8(3)
If the angle between two vectors is acute an increase in either vector will increase the resultant. If the angle is obtuse, however, an increase in one vector may either decrease or increase the resultant. A mathematical derivation and a simple geome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d12c494a3693f14587ddf3095c06ecf1
https://pubmed.ncbi.nlm.nih.gov/125777
https://pubmed.ncbi.nlm.nih.gov/125777