Progress in Superconductivity
- Volume 9 Issue 1
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- Pages.29-34
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- 2007
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- 1229-4764(pISSN)
Effects of Baseline Selection on Magnetocardiography: P-Q and T-P Intervals
심자도의 P-Q 구간과 T-P 구간에서 설정한 베이스 라인의 효과에 대한 연구
- Lim, Hyun-Kyoon (Korea Research Institute of Standards and Science) ;
- Kwon, Hyuk-Chan (Korea Research Institute of Standards and Science) ;
- Kim, Tae-En (Korea Research Institute of Standards and Science) ;
- Lee, Yong-Ho (Korea Research Institute of Standards and Science) ;
- Kim, Jin-Mok (Korea Research Institute of Standards and Science) ;
- Kim, In-Seon (Korea Research Institute of Standards and Science) ;
- Kim, Ki-Woong (Korea Research Institute of Standards and Science) ;
- Park, Yong-Ki (Korea Research Institute of Standards and Science)
- 임현균 (한국표준과학연구원) ;
- 권혁찬 (한국표준과학연구원) ;
- 김태은 (한국표준과학연구원) ;
- 이용호 (한국표준과학연구원) ;
- 김진목 (한국표준과학연구원) ;
- 김인선 (한국표준과학연구원) ;
- 김기웅 (한국표준과학연구원) ;
- 박용기 (한국표준과학연구원)
- Published : 2007.10.31
Abstract
The baseline selection is the first and important step to analyze magnetocardiography (MCG) parameters. There are no difficulties to select the baseline between P- and Q-wave peak (P-Q interval) of MCG wave recorded from healthy subjects because the P-Q intervals of the healthy subjects do not much vary. However, patients with ischemic heart disease often show an unstable P-Q interval which does not seem to be appropriate for the baseline. In this case, T-P interval is alternatively recommended for the baseline. However, there has been no study on the difference made by the baseline selection. In this study, we studied the effect of the different baseline selection. MCG data were analyzed from twenty healthy subjects and twenty one patients whose baselines were alternatively selected in the T-P interval for their inappropriate P-Q interval. Paired T-test was used to compare two set of data. Fifteen parameters derived from the R-wave peak, the T-wave peak, and the period,