| Japanese |
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| Title | 心筋梗塞症の局所壁運動の分析 - フーリエ解析とチエビシエフ解析の比較 - |
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| Subtitle | 原著 |
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| Authors | 田淵博巳*, 村田啓*, 外山比南子*, 村木俊雄*, 千葉一夫*, 山田英夫*, 上田慶二** |
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| Organization | *東京都養育院附属病院核医学放射線部, **診療第一部 |
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| Journal | 核医学 |
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| Volume | 19 |
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| Number | 6 |
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| Page | 919-928 |
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| Year/Month | 1982/7 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」第1回循環時法(RAO)および平衡時法(LAO)のデータにフーリエおよびチエビシエフ近似を行い, 局所駆出分画, 位相および局所駆出時間を算出し, 正常10例・心筋梗塞24例について比較検討した. 1次項によるフーリエ解析で算出される位相値は, R-R時間と負の相関を示し, 症例間の比較にはR-R時間による補正を必要とした. チエビシエフ解析による局所駆出時間はR-R時間と軽度正の相関を示したが生理的特質に基づくものと考えられ, 本法により求めた駆出時間は梗塞群で有意に延長していた. フーリエおよびチエビシエフ解析による局所駆出分画は, 梗塞群で有意に低下していた. 前壁部および下後壁部の局所駆出時間を正常群と梗塞群で比較した所, RAOに比べLAOでは下後壁梗塞群の局所駆出時間延長の検出が困難であり, RAOでの解析の有用性が示唆された. 高次のチエビシエフ解析法は曲線近似が良好であり, 心筋梗塞の局所壁運動の詳細な分析に有用であると考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Fourier analysis, Chebyshev analysis, regional phase value, regional ejection time, regional ejection fraction. |
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| English |
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| Title | Analysis of Regional Wall Motion Abnormality in Patients with Myocardial Infarction |
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| Authors | Hiromi TABUCHI*, Hajime MURATA*, Hinako TOYAMA*, Toshio MURAKI, Kazuo CHIBA*, Hideo YAMADA*, Keiji UEDA** |
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| Authors(kana) | |
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| Organization | *Department of Nuclear Medicine and Radiological Sciences and **Department of Internal Medicine, Tokyo Metropolitan Geriatric Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 19 |
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| Number | 6 |
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| Page | 919-928 |
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| Year/Month | 1982/7 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Regional ejection fraction (REF), phase and regional ejection time (RET) were calculated by using Fourier transform and Chebyshev transform from the regional volume curves obtained by first pass method in the right anterior oblique (RAO) projection and equilibrium method in the left anterior oblique (LAO) projection. Each parameter thus obtained was compared between 10 cases of normal control (NC) and 24 cases of myocardial infarction (MI). Regional phase values by Fourier analysis showed significant negative correlation with R-R interval. Therefore, in intercases comparison these parameters were needed for correction by R-R interval. RET by Chebyshev analysis showed slight correlation with R-R interval in equilibrium method, however, correction by R-R interval was not performed because this correlation was thought to be due to physiological characteristics. REF by Fourier and Chebyshev analyses in the patients with MI were significantly decreased compared with those of NC. Corrected regional phase values by R-R interval in the patients with MI showed significant delay compared with those of NC. RET in the patients with MI showed significant prolongation than RET of NC. On the analysis of regional contraction abnormalities in the patients with MI, prolongation in RET at anterior wall was detected in both RAO and LAO projections. However, prolongation in RET at infero-posterior wall was precisely detected by RAO analysis whereas the abnormality was hardly detected in LAO projection. These findings indicated clinical usefulness of RAO analysis on the detection of infero-posterior infarction. Chebyshev analysis was effective on the analysis of regional wall motion abnormality of MI. |
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| Practice | Clinical medicine |
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| Keywords | Fourier analysis, Chebyshev analysis, regional phase value, regional ejection time, regional ejection fraction. |
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