| Japanese |
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| Title | 運動負荷タリウム心筋シンチグラムにおける一過性左室拡大像の検討 |
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| Subtitle | 短報 |
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| Authors | 杉原洋樹*, 片平敏雄*, 志賀浩治*, 稲垣末次*, 中川達哉*, 東秋弘*, 古川啓三*, 朝山純*, 勝目紘*, 二沢佳史**, 中川雅夫* |
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| Organization | *京都府立医科大学第二内科, **東芝メディカル関西サービス |
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| Journal | 核医学 |
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| Volume | 26 |
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| Number | 12 |
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| Page | 1549-1553 |
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| Year/Month | 1989/12 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」運動負荷タリウム心筋シンチグラムにおいてみられる負荷後の一過性左室拡大像を冠動脈造影所見と対比し, 虚血性心疾患の重症度判定上の有用性を検討した. 座位自転車エルゴメータによる運動負荷心筋SPECTを, 虚血性心疾患32例および健常者15例に施行し, 初期像および3時間後像を得た. 再構成した心筋短軸像の中央部の2スライスの重ね合わせ画像において, 中心より10度ごと36本の放射状直線をひき, 各直線上の最大カウントを結ぶ面積を算出した. 初期像の面積の3時間後像の面積に対する比をTransient Dilation Index (TDI) とし一過性左室拡大の指標とした. TDIは二枝および三枝病変例ではコントロールに比し有意に大であった. 運動負荷タリウム心筋シンチグラムにおける通常の一過性欠損に加え, 一過性左室拡大の所見は重症の虚血性心疾患を検出する一助となる. 負荷後の左室容積増大に加え, 広範囲の心内膜下虚血によるタリウム取り込み分布の変化が本現象の成因と考えられた. 本法は肥大型心筋症などの非冠動脈疾患の心内膜下虚血の判定にも応用可能な有用な方法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 | Stress Thallium-201 scintigraphy, Transient dilation, Multivessel stenosis. |
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| English |
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| Title | Evaluation of Transient Dilation of the Left Ventricle on Exercise Thallium-201 Scintigraphy |
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| Authors | Hiroki SUGIHARA*, Toshio KATAHIRA*, Kouji SHIGA*, Suetsugu INAGAKI*, Tatsuya NAKAGAWA*, Akihiro AZUMA*, Keizo FURUKAWA*, Jun ASAYAMA*, Hiroshi KATSUME*, Yoshifumi NISAWA**, Masao NAKAGAWA* |
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| Authors(kana) | |
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| Organization | *Second Department of Medicine, Kyoto Prefectural University of Medicine, **Toshiba Medical, Kansai Service Co., Ltd. |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 26 |
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| Number | 12 |
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| Page | 1549-1553 |
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| Year/Month | 1989/12 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] We have noted that some patients with ischemic heart disease have a pattern of transient dilation of the left ventricle on the immediate post exercise images as compared with 3 hour redistribution images. We assessed correlation between transient dilation of the left ventricle and coronary arteriographic findings in 32 patients with ischemic heart disease and 15 controls. Initial and delayed conventional short axis tomographic images were obtained after reconstruction of 20 projections acquired over 180°. Thirty six radii by every 10 degrees were generated from the center of the middle myocardial images of the short axis. An area surrounded by thirty six points of maximal count on each radius was calculated in initial and delayed images. Transient Dilation Index (TDI) as an index of dilation was determined by dividing an area in initial image by an area in delayed image. There was no difference in TDI between patients with 1 vessel disease and controls, but TDI in patients with two vessel disease and patients with three vessel disease was larger than that in controls. Thus, transient dilation of the left ventricle on exercise Tl scintigraphy was likely to be related to number of stenotic vessel. We concluded that TDI as a simple quantitative index of transient dilation of the left ventricle was useful for detecting multi vessel stenosis. |
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| Practice | Clinical medicine |
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| Keywords | Stress Thallium-201 scintigraphy, Transient dilation, Multivessel stenosis. |
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