| Japanese |
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| Title | RI angiogramによる局所壁運動解析の新方法 - 心筋梗塞症の局所壁運動異常について - |
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| Subtitle | 原著 |
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| Authors | 林千治*, 津田隆志*, 小島研司*, 永井恒雄*, 細川修*, 渡辺賢一*, 矢沢良光*, 荒井裕*, 柴田昭*, 三谷享**, 浜斉** |
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| Authors(kana) | |
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| Organization | *新潟大学医学部第一内科, **木戸病院RI室 |
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| Journal | 核医学 |
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| Volume | 21 |
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| Number | 11 |
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| Page | 1395-1402 |
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| Year/Month | 1984/11 |
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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」99mTcを用いた平衡時マルチゲート法により得た左室心プール像を容積中心を基点として放射状に8分割し, 局所壁運動を壁運動量と位相の二面から定量的に評価する方法を考案した. 壁運動量の指標として, 各区画のカウント曲線の最大カウントと最小カウントより, 駆出率EF2を算出した (EF2=1-最小カウント/最大カウント). 各区画内のpixelの位相値を平均し, その区画の位相値とした, 8区画の位相値のうち, 最も小さい位相値を基準位相値とし, 各区画の位相値と基準値との差をphase delayとした. この値を位相の指標として用いた. 健常成人8人より得た各値の正常値を基準として心筋梗塞20症例の局所壁運動を解析した. この方法により, 本症の壁運動異常を明確に評価し得た. また, その異常は次の四形態に分類された. 1) 壁運動量の高度低下. 2) 壁運動量は低下するが位相は正常. 3) 壁運動量は正常だが, 位相の異常がある. 4) 壁運動量の低下に位相の異常を伴う. |
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| Practice | 臨床医学：一般 |
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| Keywords | Regional wall motion analysis, Wall movement, Phase delay, Asynchrony, Myocardial infarction |
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| English |
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| Title | Wall Motion Abnormality of Myocardial Infarction ; New Method of Regional Wall Motion Analysis by Use of Gated Blood Pool Scan |
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| Subtitle | Original Articles |
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| Authors | Senji HAYASHI*, Takashi TSUDA*, Kenji OJIMA*, Tsuneo NAGAI*, Osamu HOSOKAWA*, Kenichi WATANABE*, Yoshimitsu YAZAWA*, Yutaka ARAI*, Akira SHIBATA*, Tohru MITANI**, Hitoshi HAMA** |
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| Authors(kana) | |
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| Organization | *First Department of Internal Medicine, Niigata University School of Medicine, **Kido Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 21 |
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| Number | 11 |
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| Page | 1395-1402 |
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| Year/Month | 1984/11 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] By use of the gated blood pool scan, we divided the left ventricular LAO 45 image into 8 sections with the center of the volume as the basal point, and devised a method of quantitative evaluation of the regional wall motion from 2 aspects: 1) wall movement and 2) phase abnormality. To evaluate the wall movement, we obtained the following indeces from count curves of each section: 1) EF1 = (end-diastolic count - end-systolic count)/end-diastolic count, 2) EF2 = (maximum count - minimum count)/maximum count, and 3) the difference of the two (EF2 - EF1). As indeces of the phase abnormality, the mean value of phases of the pixels (phase characteristics) and the standard deviation (variation) of each section were calculated. Furthermore, the phase delay of each section was calculated as the difference from the earliest phase value of the 8 sections. Control values and standard deviation were obtained from 8 healthy controls. By this method, we analyzed 20 patients with old myocardial infarction. And following results were obtained: 1. Applying this method, we could evaluate the regional wall motion of the left ventricle more precisely, and we considered it would be useful clinically. 2. The abnormal regional wall motion of old myocardial infarction were classified into 4 typical forms as follows: 1) the wall movement decreased extremely. 2) the wall movement decreased, but no phase delay recognized. 3) the wall movement did not decrease, but phase delay was recognized. 4) the wall movement decreased, and phase delay was recognized. |
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| Practice | Clinical medicine |
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| Keywords | Regional wall motion analysis, Wall movement, Phase delay, Asynchrony, Myocardial infarction |
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