| Japanese |
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| Title | 3次元ダイナミック・パターンによる局所心機能解析法 |
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| Subtitle | 原著 |
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| Authors | 外山比南子*, 村田啓**, 間島寧興**, 山田英夫* |
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| Organization | *都養育院附属病院核医学放射線部, **虎の門病院放射線科 |
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| Journal | 核医学 |
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| Volume | 21 |
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| Number | 11 |
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| Page | 1421-1427 |
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| Year/Month | 1984/11 |
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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」心電図同期心プール断層像の新しい解析法として, 3次元ダイナミック・パターン法を開発した. 等計数法による心室辺縁抽出後, 各辺縁上の点の座標を面積中心を原点とする (r, θ) 座標に変換した. フーリエ近似を行って, 辺縁の平滑化とともに, 解析的処理を可能とした. 各時相のイメージに, 上記処理後, 辺縁, 面積中心, 長軸, 心基部を求め, 6種類のパターンを作成・表示した. 第一は, 辺縁, 面積中心および長軸の時間変化 (軌跡) を表わすもので, 空間に固定した座標系からみているため, 固定法とよぶ. 2-6は拡張終期の面積中心, 長軸, 心基部のいずれか1つ, あるいは2つに, 各時相のそれぞれが重なるように移動した場合の辺縁および長軸の軌跡である. この場合には, 空間からみた座標系が動いているため, 浮動法とよぶ. これらのパターンを, 各断面で求め3次元ダイナミック・パターン (3DDP) と名づけた. 本法を正常者の心プール・マルチゲートSPECTイメージの解析に応用し心機能の3次元的解析の可能性を検討した. |
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| Practice | 臨床医学：一般 |
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| Keywords | SPECT, Multigate image, Regional wall motion, Three dimensional analysis |
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| English |
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| Title | New Method for the Analysis of Regional Cardiac Function by Three Dimensional Dynamic Pattern (3DDP) |
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| Subtitle | Original Articles |
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| Authors | Hinako TOYAMA*, Hajime MURATA**, Yasuoki MASHIMA**, Hideo YAMADA* |
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| Organization | *Department Nuclear Medicine and Radiological Sciences, Tokyo Metropolitan Geriatric Hospital, **Division Nuclear Medicine, Toranomon Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 21 |
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| Number | 11 |
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| Page | 1421-1427 |
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| Year/Month | 1984/11 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Anew method for an analysis of regional cardiac function was developed using the multigated cardiac pool images (single photon emission computed tomogram-SPECT). The (x-y) coordinates of cardiac contour for each frame, detected automatically by equi-count method expressed in (r-θ) coordinate with respect to center of area. After they were smoothed by fifth order to Fourier function, the coordinate of contour, center of area, long axis and base with both a fixed external frame-of-reference system (fixed method) and internal frame-of-reference system (floating method), were estimated analytically for each frame. The loci of contour, center of area, long axis and base were depicted on the CRT as three dimensional dynamic pattern (3DDP). In a case of normal controle, SPECT images in two views of sagittal (long axis) and coronal (short axis) were analysed by our new method. From 3DDP with fixed method, septal wall motion was little and more decrease in the base than in the apex. The center of area moved from the lateral to the septum and from apex to base with systole. Application of this new method to multigated SPECT images could be useful for analysis of cardiac performance as three dimensional dynamic pattern. |
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| Practice | Clinical medicine |
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| Keywords | SPECT, Multigate image, Regional wall motion, Three dimensional analysis |
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