| pubmed-article:10461298 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:10461298 | lifeskim:mentions | umls-concept:C0085590 | lld:lifeskim |
| pubmed-article:10461298 | lifeskim:mentions | umls-concept:C1721068 | lld:lifeskim |
| pubmed-article:10461298 | lifeskim:mentions | umls-concept:C0475264 | lld:lifeskim |
| pubmed-article:10461298 | lifeskim:mentions | umls-concept:C1948023 | lld:lifeskim |
| pubmed-article:10461298 | pubmed:issue | 8 | lld:pubmed |
| pubmed-article:10461298 | pubmed:dateCreated | 1999-10-5 | lld:pubmed |
| pubmed-article:10461298 | pubmed:abstractText | This study was performed to: (1) evaluate the accuracy of noninvasive magnetocardiographic (MCG) localization of an amagnetic stimulation catheter; (2) validate the feasibility of this multipurpose catheter; and (3) study the characteristics of cardiac evoked fields. A stimulation catheter specially designed to produce no magnetic disturbances was inserted into the heart of five patients after routine electrophysiological studies. The catheter position was documented on biplane cine x-ray images. MCG signals were then recorded in a magnetically shielded room during cardiac pacing. Noninvasive localization of the catheter's tip and stimulated depolarization was computed from measured MCG data using a moving equivalent current-dipole source in patient-specific boundary element torso models. In all five patients, the MCG localizations were anatomically in good agreement with the catheter positions defined from the x-ray images. The mean distance between the position of the tip of the catheter defined from x-ray fluoroscopy and the MCG localization was 11 +/- 4 mm. The mean three-dimensional difference between the MCG localization at the peak stimulus and the MCG localization, during the ventricular evoked response about 3 ms later, was 4 +/- 1 mm calculated from signal-averaged data. The 95% confidence interval of beat-to-beat localization of the tip of the stimulation catheter from ten consecutive beats in the patients was 4 +/- 2 mm. The propagation velocity of the equivalent current dipole between 5 and 10 ms after the peak stimulus was 0.9 +/- 0.2 m/s. The results show that the use of the amagnetic catheter is technically feasible and reliable in clinical studies. The accurate three-dimensional localization of this multipurpose catheter by multichannel MCG suggests that the method could be developed toward a useful clinical tool during electrophysiological studies. | lld:pubmed |
| pubmed-article:10461298 | pubmed:language | eng | lld:pubmed |
| pubmed-article:10461298 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:10461298 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:10461298 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:10461298 | pubmed:month | Aug | lld:pubmed |
| pubmed-article:10461298 | pubmed:issn | 0147-8389 | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:KetoPP | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:FeniciRR | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:KatilaTT | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:KorhonenPP | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:PesoleGG | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:ToivonenLL | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:MäkijärviMM | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:PoutanenV PVP | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:NenonenJJ | lld:pubmed |
| pubmed-article:10461298 | pubmed:author | pubmed-author:LötjönenJJ | lld:pubmed |
| pubmed-article:10461298 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:10461298 | pubmed:volume | 22 | lld:pubmed |
| pubmed-article:10461298 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:10461298 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:10461298 | pubmed:pagination | 1210-20 | lld:pubmed |
| pubmed-article:10461298 | pubmed:dateRevised | 2006-11-15 | lld:pubmed |
| pubmed-article:10461298 | pubmed:meshHeading | pubmed-meshheading:10461298... | lld:pubmed |
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| pubmed-article:10461298 | pubmed:meshHeading | pubmed-meshheading:10461298... | lld:pubmed |
| pubmed-article:10461298 | pubmed:year | 1999 | lld:pubmed |
| pubmed-article:10461298 | pubmed:articleTitle | Nonfluoroscopic localization of an amagnetic stimulation catheter by multichannel magnetocardiography. | lld:pubmed |
| pubmed-article:10461298 | pubmed:affiliation | Clinical Physiology-Biomagnetism Research Center, Catholic University, Rome, Italy. | lld:pubmed |
| pubmed-article:10461298 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:10461298 | pubmed:publicationType | Comparative Study | lld:pubmed |
| pubmed-article:10461298 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
