| Japanese |
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| Title | ガンマカメラ回転型Emission Computed Tomographyによる201Tl負荷心筋断層像 - Segmental analysisによる冠状動脈狭窄性病変の検出率 - |
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| Subtitle | 原著 |
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| Authors | 竹田寛*, 前田寿登*, 中川毅*, 山口信夫*, 田口光雄*, 浜田正行**, 二神康夫**, 小西得司**, 竹沢英郎** |
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| Authors(kana) | |
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| Organization | *三重大学医学部放射線科, **第一内科 |
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| Journal | 核医学 |
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| Volume | 20 |
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| Number | 1 |
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| Page | 53-62 |
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| Year/Month | 1983/2 |
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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」冠動脈造影の施行された67例を対象とし, ガンマカメラ回転型ECT装置により201Tl負荷心筋断層像を作成し, planar images (PL) と比較し,冠動脈狭窄性病変の検出率を検討した. ECT画像は, 左室長軸に対し横断, 矢状断, 水平断像を作成, PLは, 前方, 左前斜位, 左側面像を求め, 左室壁を8分割し, 各segmentごとに201Tl集積の程度を視覚的に判定した. ECTによる有病正診率は, 前下行枝 (LAD) 76% 右冠枝 (RCA) 96%, 回施枝 (CX) 69%で, PLによる56%, 50%, 56%に較べ,いずれも上昇した. 無病正診率は, LADで85%から88%に上昇した他は, RCAで72%から70%, CXで88%から84%に軽度低下したが,診断精度はLAD, RCAでそれぞれ67%から81%, 64%から79%に上昇し, CXでは, 両者ともに81%で差がなかった. 本法は, PLに較べ, RCA領域などの深部病変や多枝病変での検出率が高く, 201Tl心筋像による冠動脈狭窄の診断精度向上のために有用と思われた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Emission computed tomography, 201Tl myocardial imaging, coronary artery disease |
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| English |
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| Title | Emission Computed Tomography Using Rotating Gamma Cameras for Stress 201Tl Myocardial Imaging : Qualitative Segmental Analysis for Localization of Coronary Artery Disease |
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| Subtitle | Original Articles |
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| Authors | Kan TAKEDA*, Hisato MAEDA*, Tsuyoshi NAKAGAWA*, Nobuo YAMAGUCHI*, Mitsuo TAGUCHI*, Masayuki HAMADA**, Yasuo FUTAGAMI**, Tokushi KONISHI**, Hideo TAKEZAWA** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, **Department of 1st Internal Medicine, Mie University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 20 |
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| Number | 1 |
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| Page | 53-62 |
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| Year/Month | 1983/2 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] The purpose of this study is to evaluate the efficacy of emission computed tomography (ECT) for stress 201Tl myocardial imaging to localize coronary artery disease (CAD) in comparison with planar (PL) images. In a series of 14 normal subjects and 53 patients with CAD proved coronary arteriography, ECT and PL imaging were performed successively. ECT data were collected for 90 projections in a 64×64 matrix form with a total aquisition time of 6 minutes over 180° of opposed dual cameras rotation and tomographic sections oriented perpendicular and parallel to the long axis of left ventricle were reconstructed. PL images were obtained for left lateral, left anterior oblique (30°and 45°) and anterior projections. Both ECT and PL myocardial images were divided into 8 segments and segmental analysis was performed by visual interpretation. The ECT images remarkably increased sensitivity over the PL images in left anterior descending (LAD) artery (from 56% to 76%), right coronary artery (RCA) (from 50% to 96%), and circumflex artery (CX) (from 56% to 69%) lesions. The specificity for ECT images, as compared with PL images, was higher in LAD (88% against 85%) but slightly lower in RCA (70% against 72%) and CX (84% against 88%). Overall accuracy, therefore, was improved in LAD (from 67% to 81%) and RCA (from 64% to 79%) but equal in CX (81%). We conclude that stress 201Tl ECT imaging result in a remarkable improvement in the localization of CAD, especially in patients with RCA lesions and multi-vessel disease. |
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| Practice | Clinical medicine |
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| Keywords | Emission computed tomography, 201Tl myocardial imaging, coronary artery disease |
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