| Japanese |
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| Title | コンバージング・コリメータ使用による小児心血液プール・スキャン |
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| Subtitle | 原著 |
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| Authors | 竹田寛*, 伊藤綱朗*, 前田寿登*, 北野外紀雄*, 中村和義*, 松村要*, 中川毅*, 山口信夫*, 青木謙三**, 桜井実** |
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| Authors(kana) | |
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| Organization | *三重大学医学部放射線科, **小児科 |
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| Journal | 核医学 |
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| Volume | 22 |
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| Number | 7 |
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| Page | 1013-1019 |
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| Year/Month | 1985/7 |
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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」1歳前後の乳幼児を対象に, マルチゲート・心血液プール法により心機能解析を行う際, 通常使用される汎用型などの平行孔コリメータでは得られる画像が小さいため左右心室を十分に分離できない場合がある. そのような症例を中心に, われわれはコンバージング (CONV) コリメータを用いてデータ収集を試みた. 対象12例 (年齢3か月〜4歳, 平均1.8歳) 全例において明瞭な拡大画像が得られ, ことに汎用コリメータでは心室間境界が不明瞭であった1歳未満の4例においても正確な左室関心領域の設定が可能となり, これより得られた左室駆出分画はX線シネアンジオグラムより算出された値と良好な相関を示した (r=0.884) . また, 位相, 振幅などのファンクショナル・イメージにより心室内の局所異常動態も明瞭に示し得た. CONVコリメータ使用による心血液プールスキャンは小児, 特に1歳未満の乳児の心機能評価法として有用と考えられる. |
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| Practice | 臨床医学：一般 |
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| Keywords | Multigated cardiac blood-pool study, Converging collimator, Pediatric cardiac disease |
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| English |
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| Title | Multigated Cardiac Blood-Pool Study Using Converging Collimator in Infants |
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| Subtitle | Original Articles |
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| Authors | Kan TAKEDA*, Tsunao ITO*, Hisato MAEDA*, Tokio KITANO*, Kazuyoshi NAKAMURA*, Kaname MATSUMURA*, Tsuyoshi NAKAGAWA*, Nobuo YAMAGUCHI*, Kenzo AOKI**, Minoru SAKURAI** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, **Department of Pediatrics, Mie University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 22 |
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| Number | 7 |
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| Page | 1013-1019 |
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| Year/Month | 1985/7 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] In infants and younger children, the cardiac blood-pool images acquired by using parallel hole collimators are often too small to determine region of interest (ROI) accurately. In order to make them magnified enough, we attempted to perform multigated equilibrium studies with converging (CONV) collimator. Twelve infants (ages ; 3 months-4 years, mean 1.8years old) with various heart diseases were studied with administration of 3-7 mCi of Tc-99m-human serum albumin. CONV studies provided proper magnification and resolution of cardiac images in all cases. Especially, in four small infants, CONV images showed adequate separation between right and left ventricles (LV) which could not be shown by the studies using general purpose collimator. We were able to determine ROI over LV accurately on the CONV images and, thus, LV ejection fractions calculated from CONV study correlated well with those obtained from biplane cineangiograms (r=0.884, p<0.01) . In addition, phase and amplitude images of CONV studies clearly showed intraventricular circumscribed hemodynamic abnormalities. This method is clinically valuable because it provides the non-invasive and reliable assessment of cardiac function in infants. |
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| Practice | Clinical medicine |
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| Keywords | Multigated cardiac blood-pool study, Converging collimator, Pediatric cardiac disease |
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