| Japanese |
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| Title | タリウム心筋エミッションCTの定量評価 (第1報) 健常心筋の検討 |
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| Subtitle | 短報 |
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| Authors | 玉木長良*, 児玉秋生*, 米倉義晴*, 向井孝夫*, 林信成*, 藤田透*, 千田道雄*, 湊小太郎*, 鳥塚莞爾* |
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| Organization | *京都大学医学部放射線・核医学科 |
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| Journal | 核医学 |
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| Volume | 21 |
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| Number | 1 |
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| Page | 35-40 |
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| Year/Month | 1984/1 |
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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」 タリウム心筋シンチグラフィーは, 非観血的に心筋血流分布を把握でき, 虚血性心疾患の評価に広く利用されている. しかしながら得られた画像の多くは視覚的判定に頼る所が多く, 必ずしも満足した診断精度が得られず, また読影者間のばらつきも大きい問題を有していた. これらの解決法のひとつとして, データ処理装置を用いた種々の定量的解析法も試みられてきている. 回転型ガンマカメラを用いたタリウムエミッションCT (ECT) 法は, 虚血病変の検出やその広がりの把握に優れているため近年急速に普及しつつある. しかしながら, これまでの報告はいずれも定性的判定法が用いられており, 通常の心筋シンチグラフィーと同様, その客観的, 定量的診断法が求められている. 今回はECTの定量診断のはじめとして, 健常心筋を用いたタリウムの正常分布物態を, ECTを用いて検討したので報告する. |
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| Practice | 臨床医学：一般 |
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| Keywords | thallium-201, myocardium, emission computed tomography, circumferential profile method. |
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| English |
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| Title | Quantitative Analysis of Thallium Myocardial Emission CT (1) Normal Thallium Distribution |
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| Subtitle | Short Communication |
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| Authors | Nagara TAMAKI, Shusei KODAMA, Yoshiharu YONEKURA, Takao MUKAI, Nobushige HAYASHI, Toru FUJITA, Michio SENDA, Kotaro MINATO, Kanji TORIZUKA |
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| Authors(kana) | |
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| Organization | Department of Radiology and Nuclear Medicine, Kyoto University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 21 |
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| Number | 1 |
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| Page | 35-40 |
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| Year/Month | 1984/1 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Quantitative analysis of thallium-201 myocardial distribution was performed in 20 normal cases using emission computed tomography (ECT) . Following injection of 2 mCi of thallium at rest (10 cases) or during maximal exercise (10 cases) , the gamma camera was rotated around anterior half of the heart collecting 32 views. A series of transverse sections and left ventricular short-axis and long-axis sections were reconstructed contiguously. Three short-axis sections, one mid-long-axis section and one mid-transverse section were selected for quantitative analysis using circumferential profile method. The circumferential profile curves of normal ECT images indicated highest thallium uptake in the lateral region and mildly decreased uptake in inferior and septal regions. Decreased uptake with large variability was noted in septal region in the basal short-axis section. We conclude that circumferential profile method can be applied for quantitative assessment of thallium distribution in myocardial ECT images. Analysis of normal thallium distribution should be helpful in the assessment of myocardial perfusion in various cardiac disorders. |
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| Practice | Clinical medicine |
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| Keywords | thallium-201, myocardium, emission computed tomography, circumferential profile method. |
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