| Japanese |
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| Title | 運動負荷201Tl心筋SPECT 24時間後少量再静注の試み |
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| Subtitle | 原著 |
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| Authors | 杉原秀樹*, 玉木長良***, 野澤真人*, 稲本康彦*, 谷口義光**, 青木悦雄**, 三ッ浪健一****, 木之下正彦**** |
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| Authors(kana) | |
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| Organization | *公立高島総合病院内科, **放射線科, ***京都大学医学部核医学科, ****滋賀医科大学第一内科 |
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| Journal | 核医学 |
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| Volume | 32 |
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| Number | 4 |
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| Page | 359-365 |
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| Year/Month | 1995/4 |
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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」運動負荷201Tl心筋SPECT 24時間後遅延像の画質を向上させるため, 24時間後に少量の201Tlを再静注する方法を試み同法の有用性について検討した. 対象は24時間後遅延像 (24DL) を撮像した18例, および24時間後再静注 (24RI) を施行した27例. 201Tl 111 MBqを用いた運動負荷心筋SPECTを施行し, 読影の後, 不完全再分布および固定性欠損を示す症例に対してのみ24時間後の撮像を行った. 24DL群において, 心筋カウントは3時間後に約1/2, 24時間後に約1/4 (同一収集時間に換算) になったが, 24時間後201Tlを37 MBq再静注した場合, 3時間後とほぼ同等の心筋カウントと画質が得られた. 3時間後に欠損と判定した区域のうち, 24RIで初めて再分布を認めたのは5/14区域 (36%), 再分布の明瞭化は6/24区域 (25%) であり, 24DLのそれぞれ11%, 17%に比べ分布の改善頻度が高い傾向にあった. 本法は画質の低下も少なく, 再分布の出現頻度も多い傾向にあり, 心筋viabilityの評価に有用と思われた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Thallium-201, Myocardial viability, 24 hours delayed scan, Coronary artery disease, Reinjection |
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| English |
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| Title | Assessment of 201Tl Myocardial SPECT Reinjected at 24 hours after Stress Imaging |
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| Subtitle | Original Articles |
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| Authors | Hideki SUGIHARA*, Nagara TAMAKI***, Masato NOZAWA*, Yasuhiko INAMOTO*, Yoshimitsu TANIGUCHI**, Etsuo AOKI**, Kenichi MITSUNAMI****, Masahiko KINOSHITA**** |
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| Authors(kana) | |
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| Organization | *Department of Internal Medicine, **Department of Radiology, Takashima General Hospital, ***Department of Nuclear Medicine, Kyoto University Faculty of Medicine, ****First Department of Internal Medicine, Shiga University of Medical Science |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 32 |
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| Number | 4 |
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| Page | 359-365 |
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| Year/Month | 1995/4 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] To improve the quality of 24 hours delayed images (24DL) of stress thallium-201 myocardial SPECT, reinjection was performed at 24 hours later (24 RI), and the results were compared with those of 24 DL. A total of 45 patients were studied, including 18 patients in 24 DL, 27 patients in 24 RI. All of them showed persistent defect or incomplete redistribution on the routine stress and 3 hours delayed SPECT scans. In 24 RI, 37 MBq of thallium-201 was reinjected at 24 hours later. Myocardial count of 24 DL was about 1/4 of stress image, while 24 RI was about 1/2. Quality of 24 RI image was nearly equal to 3 hours delayed image. Of regions without redistribution at 3 hours delayed image, 5 (36%) regions showed new redistribution at 24 RI. Of regions incomplete redistribution, 6 (25%) regions showed further redistribution. Compared with 24 DL, the frequency of redistribution tended to be higher in this protocol than that of the 24 DL (11%, 17% respectively). In conclusion, the reinjection at 24 hours delayed imaging was considered to be useful to evaluate viability of myocardium in patient with CAD. |
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| Practice | Clinical medicine |
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| Keywords | Thallium-201, Myocardial viability, 24 hours delayed scan, Coronary artery disease, Reinjection |
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