| Japanese |
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| Title | 201Tl-SPECTを用いた心筋展開図による心筋梗塞の定量評価 |
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| Subtitle | 研究速報 |
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| Authors | 久保田昌宏*, 津田隆俊*, 秋葉英成*, 森田和夫*, 細羽実**, 伴隆一**, 平野隆子** |
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| Organization | *札幌医科大学放射線科, **島津製作所 |
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| Journal | 核医学 |
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| Volume | 24 |
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| Number | 11 |
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| Page | 1677-1682 |
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| Year/Month | 1987/11 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「I. 緒言」 回転型ガンマカメラを用いた201Tl心筋Single Photon Emission Computed Tomography (SPECT) は高い病変検出能を示し, 病変の把握に優れている. SPECT像では多層の連続した断面が得られるため虚血, 梗塞の範囲を計測することも可能である. しかし多くの断層面を用いるためその処理は煩雑である. 今回著者らは虚血や梗塞の範囲を的確に容易に算出することを目的として, 心筋SPECT像より心筋展開図を作製する方法を開発し, 本法の精度をファントム実験および梗塞症例で検討したので報告する. 「II. 方法」 使用した装置は, Searle社製dual head回転型ガンマカメラZLC-75型およびオンラインで接続したミニコンピュータ (シンチパック2400) である. |
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| Practice | 臨床医学：一般 |
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| Keywords | Myocardial surface display, Infarct size, Single photon emission computed tomography (SPECT) , 201Tl myocardial scintigraphy. |
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| English |
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| Title | Estimation of Infarct Size by Three-Dimensional Surface Display Method of Myocardial Single Photon Emission CT with 201Tl |
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| Authors | Masahiro KUBOTA*, Takatoshi TSUDA*, Hidenari AKIBA*, Kazuo MORITA*, Minoru HOSOBA**, Ryuichi BAN**, Takako HIRANO** |
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| Authors(kana) | |
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| Organization | *Department of Radiology, Sapporo Medical College, **Shimadzu Corporation |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 24 |
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| Number | 11 |
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| Page | 1677-1682 |
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| Year/Month | 1987/11 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] To estimate infarct size, we devised three-dimensional (3D) surface display method of 201Tl myocardial single photon emission CT (SPECT) . The method was performed with maximum-count circumferential profiles (CPs) of short axis views of 201Tl myocardial SPECT. The counts of maximum-count CP were put into a pixel line with the calculated left ventricular circumferential length on each short axis slice. A 3D-surface display map was created by arrangement of these pixel lines from apex to base of left ventricle in order. The sizes of defects in myocardial phantom were calculated by this method. There was a high correlation between the real defect sizes and the calculated defect sizes. In 6 patients with anterior myocardial infarction, the infarct sizes were calculated by this method. The extent of abnormality was identified by automatic computer comparison of each patient's profiles with corresponding lower limits of normal profiles. The infarct sizes calculated by 3D-surface display method were closely correlated not only with the infarct sizes calculated by summation of defect sizes in short axis views, but also with left ventricular ejection fractions. We concluded that the 3D-surface display method of 201Tl myocardial SPECT is effective for noninvasive assessment of the extent of myocardial infarction. |
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| Practice | Clinical medicine |
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| Keywords | Myocardial surface display, Infarct size, Single photon emission computed tomography (SPECT) , 201Tl myocardial scintigraphy. |
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