Development of a New Analytical Method for the Electrocardiogram Using Short-Time First Fourier Transforms
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概要
- 論文の詳細を見る
To detect the minute electric potential inside the QRS complex, a new frequency domain method was designed using short-time First Fourier Transforms(SFFT) and high-frequency sampling(oversampling). SFFT improved the frequency resolution by oversampling that was applied to this analysis. The electric potential data of 15, 000 points received weighted, running average processing and was subtracted from the original waveform to reduce the low-frequency component. The data in a segment of 160 ms, including QRS, was processed by frequency analysis with the SFFT computation routine. The ECG of healthy individuals was analyzed by this method and its usefulness evaluated. The processing waves of the X-axis, Y-axis, and Z-axis of a representative normal subject were formed into 3 groups of peak electric potential. SFFT enabled the detection of the structure inside the QRS complex without signal averaging, and is considered capable of evaluating the process of excitement inside the QRS complex in the various heart diseases.
- 社団法人日本循環器学会の論文
- 1999-11-20
著者
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Murayama Masahiro
Division Of Cardiology St. Marianna University School Of Medicine
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Miyake Fumihiko
Department of Cardiology, St. Marianna University School of Medicine
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Kawara Tokuhiro
心臓血管研究所
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Murayama Masahiro
Department of Cardiology, St Marianna University School of Medicine
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TSUCHIYA Katsuhiko
Department of Cardiovascular Internal Medicine, St. Marianna University School of Medicine Hospital
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Miyake Fumihiko
Department Of Cardiology St. Marianna University School Of Medicine
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Sato Chuichi
Division Of Cardiology Department Of Internal Medicine St. Marianna University School Of Medicine
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Sato Chuichi
Department Of Clinical Pathology School Of Medicine Iwate Medical University
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Sato Chuichi
The Second Department Of Internal Medicine St. Marianna University School Of Medicine
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Tanabe Kazuhiko
Division Of Cardiology Department Of Internal Medicine St. Marianna University School Of Medicine
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Mori Narumi
Yokohama Sports Medical Center
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Mori Narumi
Division of Cardiology, Department of Internal Medicine, St Marianna University School of Medicine
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Hara Masatoshi
Department of Internal Medicine, St Marianna University School of Medicine
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Nanke Toshihiko
Department of Internal Medicine, St Marianna University School of Medicine
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Mori Narumi
Department of Internal Medicine, St Marianna University School of Medicine
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Murayama Masahiro
Department Of Applied Chemistry
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Miyake Fumihiko
Division Of Cardiology St. Marianna University School Of Medicine
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Miyake Fumihiko
St. Marianna University School Of Medicine Division Of Internal Medicine
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Hara Masatoshi
Division of Cardiology, St. Marianna University School of Medicine
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Hara Masatoshi
St. Marianna University School Of Medicine Internal Medicine Division Of Cardiology
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Hara Masatoshi
Department Of Biological Information Graduate School Of Bioscience And Biotechnology Tokyo Institute
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Hara Masatoshi
St. Marianna University School Of Medicine Department Of Second Internal Medicine
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Nanke Toshihiko
Department Of Cardiology St. Marianna University School Of Medicine
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Miyake Fumihiko
St. Marianna University School Of Medicine Internal Medicine Division Of Cardiology
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Miyake Fumihiko
The Second Department Of Internal Medicine St. Marianna University School Of Medicine
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Murayama Masahiro
Division Of Cardiology Department Of Internal Medicine St Marianna University School Of Medicine
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Mori Narumi
Division Of Cardiology Department Of Internal Medicine St Marianna University School Of Medicine
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Sato Chuichi
The Second Dept. Of Internal Medicine St. Marianna University School Of Medicine
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Murayama Masahiro
The Second Department Of Internal Medicine St. Marianna University School Of Medecine
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Murayama Masahiro
Department Of Internal Medicine (cardiology) St Marianna University
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Hara Masatosi
Division Of Cardiology Department Of Internal Medicine St Marianna University School Of Medicine
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Murayama Masahior
The 2nd Department Of Internal Medicine St. Marianna University
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Tamamura Kazuki
Fukuda Denshi Co Ltd
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Murayama Masahiro
The Second Department Of Internal Medicine St Marianna University School Of Medicine
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Tsuchiya Katsuhiko
Department Of Cardiovascular Internal Medicine St. Marianna University School Of Medicine Hospital
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Tsuchiya Katsuhiko
Department Of Cardiology St. Marianna University Yokohama City Seibu Hospital
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