Document Detail


Magnetocardiography of animals in magnetically shielded environment with active compensation.
MedLine Citation:
PMID:  16012642     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A high-Tc 1st-order electronic superconducting quantum interference device (SQUID) gradiometer system is constructed to study the magnetocardiogram (MCG) of rabbits in a moderately magnetically shielded environment with active compensation. In the noisy hospital environment, the noise cannot be completely reduced with the 1st-order gradiometer, therefore, a reference SQUID with active compensation was used to further reduce the noise level leaking into the room. The MCG system was equipped with a x-y translation bed. We used a low-pass filter with the cut off frequency at 44 Hz, a high-pass filter with the cut off frequency at 0.1 Hz and the 60 Hz notch filter to reduce the power line interference. The noise level of the 1st order gradiometer MCG system in this moderately magnetically shielded room was about 1 pT/square root of Hz1/2 at 1 Hz. The MCG of a normal rabbits was measured with this system and a MCG contour map and a current density distribution was constructed.
Authors:
H E Horng; S H Liao; S J Hsu; H C Yang; J Y Wu; C C Chen; C H Wu; C C Wu
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2004-11-30
Journal Detail:
Title:  Neurology & clinical neurophysiology : NCN     Volume:  2004     ISSN:  1526-8748     ISO Abbreviation:  Neurol Clin Neurophysiol     Publication Date:  2004  
Date Detail:
Created Date:  2005-07-13     Completed Date:  2006-04-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100972440     Medline TA:  Neurol Clin Neurophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  84     Citation Subset:  IM    
Affiliation:
Department of Physics, National Taiwan Normal University, Taipei, Taiwan. phyfv001@scc.ntnu.edu.tw
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Electrocardiography / methods*
Electromagnetic Fields*
Environment*
Rabbits
Radiation Protection / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Maximum likelihood dipole fitting in spatially colored noise.
Next Document:  Magnetocardiographic study of ventricular repolarization in hypertensive patients with and without l...