| Japanese |
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| Title | 運動負荷201Tl心筋シンチグラムにおける再静注法 : 3時間後再分布像による心筋viabilityの評価 |
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| Subtitle | 短報 |
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| Authors | 伊藤一貴*, 杉原洋樹**, 寺田幸治*, 谷口洋子*, 大槻克一*, 馬本郁男*, 中川達哉*, 宮崎浩志*, 東秋弘*, 河野義雄*, 前田知穂**, 中川雅夫* |
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| Organization | *京都府立医科大学第二内科, **放射線科 |
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| Journal | 核医学 |
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| Volume | 31 |
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| Number | 3 |
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| Page | 265-269 |
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| Year/Month | 1994/3 |
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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」虚血性心疾患32例に, 運動負荷/再静注201Tl心筋シンチグラムに加え, 再静注3時間後像を撮像し, 再静注3時間後像が心筋viabilityの評価に寄与するか否かを検討した. 方法は, 運動負荷201Tl心筋SPECTを施行し, 運動負荷初期像 (EX) を得, その3時間後に201Tlを再静注し, 再静注直後像 (Re1) を得た. さらに, 再静注3時間後に再静注遅延像 (Re2) を撮像した. 再構成したそれぞれのSPECT画像を13領域に分割し, 領域ごとに灌流低下の程度を視覚的に4段階にスコア化し, Re1とRe2で比較検討した. 結果は, (1)Exで灌流低下が認められた202領域中27領域 (13.4%) で, Re1に比しRe2でスコアが改善した. (2)Re1で心筋viabilityなしと判定した50領域中18領域 (36%) で, Re2でスコアの改善を認め, 心筋viabilityありと診断し得た. 以上より, 再静注法3時間後像は, 再静注像の心筋viabilityの過小評価を補う有用な方法であることが示唆された. |
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| Practice | 臨床医学：一般 |
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| Keywords | Reinjection, Stress 201Tl myocardial scintigraphy, Myocardial viability. |
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| English |
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| Title | Detection of Myocardial Viability by Delayed Imaging after 201Tl Reinjection |
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| Subtitle | Short Communications |
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| Authors | Kazuki ITO*, Hiroki SUGIHARA**, Kouji TERADA*, Yoko TANIGUCHI*, Katsuichi OTSUKI*, Ikuo UMAMOTO*, Tatsuya NAKAGAWA*, Hiroshi MIYAZAKI*, Akihiro AZUMA*, Yoshio KOHNO*, Tomoho MAEDA**, Masao NAKAGAWA* |
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| Authors(kana) | |
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| Organization | *Second Department of Medicine, **Department of Radiology, Kyoto Prefectural University of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 31 |
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| Number | 3 |
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| Page | 265-269 |
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| Year/Month | 1994/3 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Recent studies have demonstrated that some underestimation of myocardial viability remained to be not resolved even using reinjection method. So we devised a new technique of reinjection and reimaging, and using this we studied the detectability of myocardial viability in 32 patients of CAD. Exercise imaging (EX) was acquired after initial injection of thallium (111MBq) . Three hours after EX, the second dose thallium (37 MBq) was reinjected, and then the first reinjection image (Re1) was performed. Furthermore, the second reinjection image (Re2) was obtained at 3 hours after the second dose reinjection. SPECT images were divided in basal, mid and apical parts, and totally 13 segments were analyzed by visual scoring (0:severe, 1:moderate, 2:mild hypoperfusion and 3:normal) . Twenty-seven (13.4%) of 202 segments of low score (0 to 2) shown in EX were improved in Re2, compared with Re1. Twenty-one (42.0%) of 50 segments of score 0 or 1 shown in Re1 were improved in Re2. These results showed that our devised new method of reimaging 3 hours after the second dose injection was useful to improve in detectability of myocardial viability. |
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| Practice | Clinical medicine |
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| Keywords | Reinjection, Stress 201Tl myocardial scintigraphy, Myocardial viability. |
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