Linked Life Data

16012686

Source:http://linkedlifedata.com/resource/pubmed/id/16012686

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2005-7-13
pubmed:abstractText
We propose a novel classification method based on the Bayes rule to utilize the magnetocardiogram (MCG) in noninvasive mass screening. The cardiac excitation is directly tracked by maps of the MCG field generated by myocardial excitation current through the excited wave front. To adopt the characteristics of the excited wave fronts as a parameter for the Bayes theorem, we developed a parameterization procedure that consists of a two-dimensional wavelet approximation and a cluster analysis of magnetic field maps. With the parameter determined by this procedure, the probability of a subject to belong to a disease group or to the normal group is estimated by the Bayes theorem. The subject is classified into the group of the highest probability. We applied the proposed method to ST-T period of MCG data of 6 old myocardial infarction (OMI) patients and 15 normal controls. The method showed sensitivity of 83%; specificity, 100%; positive predictive value, 100%; and negative predictive value, 94% in the classification of OMI patients and normal controls. The processing time is less than 5 seconds per one subject. It suggests a possible application of the proposed method in mass screening of abnormal MCG patterns.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1526-8748
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
2004
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Bayesian classification of myocardial excitation abnormality using magnetocardiogram maps for mass screening.
pubmed:affiliation
Dept. of Electrical and Bioscience, Waseda Univ., Japan. yumie@moegi.waseda.jp
pubmed:publicationType
Journal Article, Comparative Study