Japanese
Title平衡時心RIアンギオグラフィーによる運動負荷時の局所壁運動の定量化の試み - 位相解析法および局所駆出分画法の意義 -
Subtitle原著
Authors玉木長良*, 向井孝夫*, 石井靖*, 山本和高*, 湊小太郎*, 藤田透*, 鳥塚莞爾*, 田巻俊一**, 吉田章**, 門田和紀**, 神原啓文**, 河合忠一**
Authors(kana)
Organization*京都大学医学部放射線核医学科, **第三内科
Journal核医学
Volume19
Number2
Page209-216
Year/Month1982/3
Article原著
Publisher日本核医学会
Abstract「要旨」運動負荷心プール像を位相解析法および局所駆出分画を用いて, 局所壁運動の定量的評価を試みた. 2分間のデータ収集では, 左室駆出率(LVEF)および位相分布ヒストグラムの標準偏差(SD)は再現性が高く(検者間の相関係数γ=0.96), 局所駆出分画(REF)よりも優れた(γ=0.91). データ収集時間を短縮しても, REFに比べLVEFとSDは2分間まで変動が少なく(変動はおのおの10%と15%以内), 運動負荷心プール法に適用可能と考えられた. 正常人5例および狭心症14例について, 安静時と運動負荷時のLVEF, REF, SDを検討した. 正常人では5例ともLVEFが10%以上増加し, SDは不変であった. 狭心症ではLVEFの増加のみられないものが13例(93%)であり, REFは10例(71%)がいずれかの分画で低下した. SDの増加を示したものは10例(71%), 安静時または運動負荷時にSDの高値を示したのは11例(79%)で, 両者をあわせると86%が異常を示した. 位相解析法は容量曲線全体を曲線全体を曲線近似するため精度が高く, 運動負荷心プール法にも有用と思われた.
Practice臨床医学：一般
Keywordstemporal Fourier analysis, gated blood pool study, regional wall motion, angina pectoris, stress test.
English
TitleQuantitative Evaluation of Regional Wall Motion in Stress Gated Blood Pool Study
Subtitle
AuthorsNagara TAMAKI*, Takao MUKAI*, Yasushi ISHII*, Kazutaka YAMAMOTO*, Kotaro MINATO*, Toru FUJITA*, Kanji TORIZUKA*, Shunichi TAMAKI**, Akira YOSHIDA**, Kazunori KADOTA**, Hirofumi KAMBARA**, Chuichi KAWAI**
Authors(kana)
Organization*Department of Radiology and Nuclear Medicine, **The Third Division, Department of Internal Medicine, Kyoto University School of Medicine
JournalThe Japanese Journal of nuclear medicine
Volume19
Number2
Page209-216
Year/Month1982/3
ArticleOriginal article
PublisherTHE JAPANESE SOCIETY OF NUCLEAR MEDICINE
AbstractQuantitative evaluation of regional wall motion measured at rest and peak exercise by gated blood pool study was attempted using temporal Fourier analysis(phase analysis) and regional ejection fraction method. The value of left ventricular ejection fraction(LVEF), regional ejection fraction(REF), and the standard deviation(SD)of the phase distribution histogram were basically and clinically evaluated. Reproducibility of the LVEF and the SD was excellent even in two-minutes-data acquisition(correlation coefficient between the two observers: LVEF; r=0.96, REF; r=0.91, and SD; r=0.96). Five normal persons and 14 patients with angina pectoris without prior myocardial infarction were selected for gated blood pool study both at rest and during peak supine bicycle exercise. In all the normal persons, the LVEF was elevated and the SD was not changed indicating increased left ventricular contraction without significant asynchrony. On the contrary, in 13 of the 14 patients with angina, the LVEF was unchanged or decreased(sensitivity 91%). The SD was significantly elevated in 10 of the 14cases(71%). Among the rest of the four cases, two showed abnormally high value of the SD at rest or during exercise. Thus, the phase distribution histogram indicated asynchrony in 12 of the 14 cases(sensitivity 86%). We conclude that phase analysis provides reliable and valuable informations in the detection of regional wall motion abnormality in stress gated blood pool study.
PracticeClinical medicine
Keywordstemporal Fourier analysis, gated blood pool study, regional wall motion, angina pectoris, stress test.

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