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Reproducibility of Quantitative Estimate of Magnetocardiographic Ventricular Depolarization and Repolarization Parameters in Healthy Subjects and Patients with Coronary Artery Disease

Authors
 Hyun Kyoon Lim  ;  Namsik Chung  ;  Yong Ki Park  ;  In-Seon Kim  ;  Jin-Mok Kim  ;  Jung Rae Cho  ;  Jin-Bae Kim  ;  Yong-Ho Lee  ;  Hyukchan Kwon  ;  Young-Guk Ko  ;  Kiwoong Kim 
Citation
 ANNALS OF BIOMEDICAL ENGINEERING, Vol.35(1) : 59-68, 2007 
Journal Title
ANNALS OF BIOMEDICAL ENGINEERING
ISSN
 0090-6964 
Issue Date
2007
Abstract
Magnetocardiography (MCG) has been introduced as an innovative non-invasive diagnostic tool to identify various heart diseases. However, there have been little data on the reliability of MCG parameters. The purpose of this study is to examine the test–retest reliability of different diagnostic parameters derived from MCG. We investigated short-, intermediate-, and long-term reliability of nine parameters from T max/3–T max interval, and five parameters from each time point such as QRS-wave, the peak of R-, and T-wave were evaluated. Short-term reliability was tested in the youngest 20 subjects (mean age = 26.3 ± 4.9 years) in three sessions separated by 5 min. Intermediate-term reliability was tested in the 35 subjects with coronary artery disease (CAD) (65.1 ± 7.1 years) with two recording sessions each in the morning and afternoon, separated by more than four hours. Long-term reliability was tested in seven subjects (37.1 ± 8.8 years) using seven daily sessions. Interclass correlation coefficients (ICC) showed that test–retest reliability was good to excellent (0.99 ≥ ICC ≥ 0.80) for six out of nine parameters within T max/3–T max. In addition, all parameters on the peak of R-wave, T-wave, and QRS-wave integrated were good to excellent (0.99 ≥ ICC ≥ 0.80) except for one parameter of CAD patients showing lower ICC values under 0.7. In conclusion, our study showed that the test–retest characteristics of the studied MCG parameters are generally stable and reliable over periods of minutes to days in subjects with different age spectrums.
Full Text
http://link.springer.com/article/10.1007%2Fs10439-006-9210-9
DOI
10.1007/s10439-006-9210-9
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Ko, Young Guk(고영국) ORCID logo https://orcid.org/0000-0001-7748-5788
Kim, Jin Bae(김진배)
Chung, Nam Sik(정남식)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/95612
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