| Japanese |
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| Title | 201塩化タリウムによる心筋断層像 |
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| Subtitle | 《原著》 |
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| Authors | 多田明*, 前田敏男*, 松田博史*, 分校久志*, 利波紀久*, 久田欣一* |
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| Organization | *金沢大学医学部 |
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| Journal | 核医学 |
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| Volume | 17 |
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| Number | 10 |
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| Page | 1241-1247 |
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| Year/Month | 1980/12 |
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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」201Tl心筋血流スキャンは虚血性心疾患の診断などに広く利用されているが, 従来のガンマカメラによる撮像ではbackgroundが高く肺野や心筋前後のactivityの重なりを避けられないために病巣の検出と広がりの評価に限界があることが指摘されている. 201Tlを用いたsingle photon emission CTは心筋と心内腔, 肺野を明瞭に分離して描画でき, 断層内での病巣の広がりの評価が容易になった. ECT像における正常RI分布を決定するために8例の正常者において, 左心室中心から放射線上の最高countを各角度ごとにプロットして, 全体の最高countとの比で表示し, 各角度ごとの平均-2SDを求めてこれを正常下限と定めた. 心臓中央部や心基部の断層の正常下限値は前壁の一部で65%に低下したが, ほぼ全周で最高countの70%であった. 12例の心筋梗塞例において, γ-カメラ像では診断できなかった3例にECTで異常を指摘できた. |
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| Practice | 臨床医学：一般 |
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| Keywords | single photon emission CT, thallium-201, myocardial image |
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| English |
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| Title | Single Photon Emission CT of the Myocardium with Thallium-201 |
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| Subtitle | - Original Articles - |
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| Authors | Akira TADA, Toshio MAEDA, Hiroshi MATSUDA, Hisashi BUNKO, Norihisa TONAMI, Kinichi HISADA |
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| Authors(kana) | |
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| Organization | Department of Nuclear Medicine, Kanazawa University, School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 17 |
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| Number | 10 |
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| Page | 1241-1247 |
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| Year/Month | 1980/12 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Myocardial scintigraphy with potassium analogue of 201Tl is useful for the noninvasive detection of myocardial infarction, but conventional gamma camera images obtained using 201Tl are often less satisfactory due to the lack of information of the third dimension. Single photon emission tomography provides the solution to the problem, that superficial structure overlies deeper structures and therefore underlying abnormal activities may be concealed, by enabling transverse tomographic sections through the organ or region of interest to be obtained from the emission of gamma rays. We used scanner type single photon emission CT, Tomogscaner II (J&P), and evaluated normal variations of radioisotope distribution in the myocardium. To decide normal variations of activity in the myocardium, activities along radii constructed from the center of the left ventricle to each point of the left ventricle circumference were measured in 8 normal patients. Data were then displayed graphically as a circumferential profile, and mean and mean-2S.D. (nomral limit) values of each angle were determined. Normal middle-heart section showed a ring shape and its distribution of the activity was almost more than 70% of the peak activity, but importantly, the range of normal limit in the anterior part of the wall was about 65%, of the peak. The normal cardiac base section showed horse-shoe shape, and homogenious activities more than 70% of the peak was observed. |
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| Practice | Clinical medicine |
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| Keywords | single photon emission CT, thallium-201, myocardial image |
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