| Japanese |
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| Title | 負荷thallium-201心筋イメージの右室自由壁描出に及ぼす側副血行路の影響について |
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| Subtitle | 《短報》 |
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| Authors | 片岡一*, 高岡茂*, 大窪利隆*, 黒岩宣親*, 大重太真男*, 中村一彦*, 橋本修治* |
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| Organization | *鹿児島大学医学部第二内科 |
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| Journal | 核医学 |
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| Volume | 20 |
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| Number | 4 |
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| Page | 413-418 |
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| Year/Month | 1983/5 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「I. はじめに」著者らは, 先に負荷thallium(Tl)-201心筋イメージ(以下TMI)と冠動脈造影所見との対比を行い, 負荷TMIにおける右室自由壁(以下RVFW)描出所見の意義について報告した. 本研究では, 左冠動脈より右冠動脈に至る側副血行路のRVFW描出に及ぼす影響ならびに臨床的役割について検討した. 「II. 対象と方法」対象は, 臨床的に下壁心筋梗塞の合併がなく, 冠動脈造影上, 右冠動脈起始部に高度冠狭窄(内径の90%以上)を有する7例で, 年齢は48歳より65歳, 男4例, 女3例である. 冠動脈造影所見上, 意義ある側副血行路の有無により, collateral(-)群3例とcollateral(+)群4例とにわけた. 心臓カテーテル検査はSones法にて行い, 冠動脈造影ならびに左室造影所見はAHA分類に従った. Hambyらの方法により, 左冠動脈より右冠動脈に至る側副血行路の評価を行い, 当該側副血行路により右冠動脈後下行枝が明瞭に造影された場合, これを意義ある側副血行路と判定した. |
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| Practice | 臨床医学：一般 |
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| Keywords | Thallium-201 myocardial image, Exercise test, Right ventricle, Coronary collaterals. |
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| English |
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| Title | Effect of Coronary Collateral Channels on Right Ventricular Free Wall Appearance in Stress Thallium-201 Myocardial Image |
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| Authors | Hajime KATAOKA, Shigeru TAKAOKA, Toshitaka OHKUBO, Nobuchika KUROIWA, Tamao OHSHIGE, Kazuhiko NAKAMURA, Shuji HASHIMOTO |
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| Authors(kana) | |
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| Organization | The Second Department of Internal Medicine, Kagoshima 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 | 4 |
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| Page | 413-418 |
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| Year/Month | 1983/5 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | Effect of coronary collateral channels on right ventricular free wall (RVFW) appearance in stress thallium (Tl)-201 myocardial image (TMI) was examined in 7 patients with ischemic heart disease, who had marked (>=90% narrowing) proximal right coronary artery (RCA) stenosis. According to presence or absence of the significant collateral channels from the left coronary to RCA (defined as dense contralateral filling of the RCA distal to a stenosis on the left coronary injection), the subjects were classified into two distinct groups; i.e., negative collateral group (3 cases) and positive collateral group (4 cases). Immediate and 3 to 4 hour delayed TMIs were obtained in 30° and 60° left anterior oblique projections after the submaximal exercise stress. All the patients in negative collateral group demonstrated defective visualization of the RVFW in immediate TMIs. Contrary to this, 2 of 4 patients in positive collateral group showed continuous visualization of the RVFW in immediate images. Although the RVFW was not visualized in immediate TMIs of remaining 2 patients in positive collateral group, they demonstrated redistribution of Tl-201 into the RVFW in delayed images. Thus, these results suggest that coronary collateral channels seem to protect the RVFW against the development of exercise-induced ischemia and affect the occurrence of redistribution of Tl-201 into the RVFW in delayed image. |
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| Practice | Clinical medicine |
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| Keywords | Thallium-201 myocardial image, Exercise test, Right ventricle, Coronary collaterals. |
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