| Japanese |
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| Title | 内胸動脈を用いたCABG術後症例の負荷心筋シンチグラフィによるグラフト開存性の評価 - グラフトが開存しているにもかかわらず出現する再分布所見の検討 - |
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| Subtitle | 原著 |
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| Authors | 山住令子*, 小林秀樹**, 浅野竜太*, 百瀬満**, 堀江俊伸*, 日下部きよ子**, 細田瑳一* |
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| Authors(kana) | |
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| Organization | *東京女子医科大学循環器内科, **放射線科 |
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| Journal | 核医学 |
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| Volume | 32 |
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| Number | 3 |
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| Page | 271-279 |
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| Year/Month | 1995/3 |
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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」冠動脈バイパス再建術 (CABG) 後に動脈グラフトが開存しているにもかかわらず, 201Tl負荷心筋シンチグラフィで再分布所見が出現する頻度や特徴について検討した. 冠動脈造影でCABGによる完全血行再建が確認された領域において, 動脈グラフト93領域中の22領域 (27%), 静脈グラフト43領域中の4領域 (10%) で再分布所見が認められた. 左前下行枝領域の動脈グラフト例に限定すると51領域中の18領域 (38%) で再分布が認められた. ジピリダモール負荷例の再分布出現 (左前下行枝領域) は23領域中の11領域 (58%) と, 運動負荷例に比べ高率であった. 動脈グラフトを使用したCABG術後例では, 動脈グラフトに狭窄, 閉塞がないにもかかわらず201Tl負荷心筋シンチグラフィ上で高頻度に再分布が出現することを認識している必要があり, この再分布の出現の病態については, 心筋虚血の関与の有無を含めて今後の検討が必要と考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Thallium-201, Stress myocardial scintigraphy, Coronary artery bypass grafts surgery (CABG), Graft patency, Internal thoracic artery |
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| English |
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| Title | High Incidence of False Positive Results of Thallium-201 Myocardial Stress Scintigraphy for the Evaluation of Artery Bypass Graft Patency after CABG |
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| Subtitle | |
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| Authors | Reiko YAMAZUMI*, Hideki KOBAYASHI**, Toshinobu HORIE*, Ryuta ASANO*, Mitsuru MOMOSE**, Kiyoko KUSAKABE**, Saichi HOSODA* |
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| Authors(kana) | |
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| Organization | *The Heart Institute of Japan, Tokyo Women's Medical College, **Department of Radiology, Tokyo Women's Medical College |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 32 |
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| Number | 3 |
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| Page | 271-279 |
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| Year/Month | 1995/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] We have often experienced false positive results of the stress Thallium-201 myocardial scintigraphy (TL) for the evaluation of artery bypass graft patency after coronary artery bypass surgery (CABG). The purpose of this study is to clarify the frequency and the clinical significance of this findings. Sixty-two patients undergoing coronary angiography (CAG) after CABG were studied. These patients had undergone a total of 156 bypasses (artery grafts 108, saphenous vein grafts 48, mean bypass grafts number 2.65/cases), and the mean period from CABG to TL was 41.6+-34 days. The territories of stress induced ischemia were divided into 3 territories ; left anterior descending (LAD), right coronary artery (RCA), and left circumflex (LCX) territories. Patency of the bypass grafts was estimated on the absence of transient perfusion defect (TPD) on TL images. The incidence of false positive results was higher in Dipyridamole TL (38%) than in Exercise TL (18%) and higher in LAD territories (38%) than in RCA (11%) and LCX (13%) territories. All false positive cases showed no evidence of chest pain and significant ST-T change during stress TL test. High incidence of false positive results of stress TL test was observed for the evaluation of artery bypass graft patency after CABG. |
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| Practice | Clinical medicine |
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| Keywords | Thallium-201, Stress myocardial scintigraphy, Coronary artery bypass grafts surgery (CABG), Graft patency, Internal thoracic artery |
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