| Japanese |
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| Title | 7-pinhole collimatorによる心筋断層シンチグラム |
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| Subtitle | 《原著》 |
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| Authors | 米倉義晴*, 向井孝夫*, 山本和高*, 石井靖*, 藤田透*, 湊小太郎*, 鳥塚莞爾*, 神原啓文*, 三羽邦久**, 吉田章**, 川下憲二**, 河合忠一** |
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| Authors(kana) | |
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| Organization | *京都大学医学部放射線核医学科, **第三内科 |
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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 | 1267-1278 |
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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」7-pinhole collimatorによる心筋断層シンチグラムを施行し, 従来のシンチグラムと比較してその臨床的有用性を検討した. 左室心筋を想定したファントム実験では, 欠損の検出能は従来の平行コリメータによる像と同程度と考えられたが, 臨床例では, 断層シンチグラムは, 従来のシンチグラムではしばしば判定が困難になる下壁梗塞や, 心内膜下梗塞において, 前後の重なりを避けて欠損を描出できる点で, 201Tl心筋シンチグラムの有効性を高めると考えられた. 心拍同期法の併用は, これに加えて, 心内膜側の壁運動を血流分布imageと同時に観察できるので, 特に小さな欠損の所在の同定に有効である. 肥大型心筋症では, 不均等肥大の部位とその程度の推定に有用であった. これらの断層シンチグラムは, 病変の部位により, 適当な方向からの断層面を得ることが重要と考えられた. 本法は簡便に断層像が得られるので, 心臓核医学における幅広い臨床応用が期待される. |
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| Practice | 臨床医学：一般 |
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| Keywords | myocardial perfusion tomography, 7-pinhole collimator, 201Tl myocardial imaging, nuclear cardiology, emission computed tomography |
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| English |
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| Title | Myocardial Perfusion Tomography with 7-Pinhole Collimator |
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| Subtitle | - Original Articles - |
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| Authors | Yoshiharu YONEKURA*, Takao MUKAI*, Kazutaka YAMAMOTO*, Yasushi ISHII*, Toru FUJITA*, Kotaro MINATO*, Kanji TORIZUKA*, Hirofumi KAMBARA**, Kunihisa MIWA**, Akira YOSHIDA**, Kenji KAWASHITA**, Chuichi KAWAI** |
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| Authors(kana) | |
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| Organization | *Department of Radiology and Nuclear Medicine, and **Third Division, Department of Medicine, Kyoto 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 | 1267-1278 |
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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] The clinical efficacy of tomographic presentation of myocardial perfusion imaging with 7-pinhole collimator was evaluated. 35 cases including 5 normals, 4 patients with diffuse left ventricular hypertrophy, 21 with coronary artery disease (CAD) and 5 with hypertrophic cardiomyopathy (HCM) documented by coronary angiography and left ventriculography were selected for this study. Following the conventional 201Tl myocardial perfusion imaging (MPI), myocardial perfusion tomography (MPT) with 7-pinhole collimator was performed in both LAO and RAO projection. In addition, to examine wall motion abnormalities tomographically, 201Tl MPI as well as 99MTc-RBC blood pool imaging were gated to reconstruct multigated MPT (MGMPT) and multigated cardiac pool tomography (MGCPT). The detectability of the defect of the 7-pinhole tomography was compared with that of the conventional image using a cardiac phantom. The same degree of detectability was shown with both these two images. The MPT in LAO projection revealed superior sensitivity to the conventional MPI in the case of inferior wall infarction, and the MPT in RAO projection revealed superior sensitivity in the case of anterior wall infarction. A combination of the MGMPT and MGCPT succeeded in visualizing a subendocardial infarction as a focal gap between these two images. In the case of the small infarction undetectable in the conventional MPI, it can be seen as subtle wall motion abnormalities in the tomographic presentation in movie format. An asymmetrical hypertrophy in HCM can readily be localized in tomographic visualization. Tomographic reconstruction with 7-pinhole collimator from the optimal tomographic plane should be attempted, when the conventional display is equivocal. |
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| Practice | Clinical medicine |
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| Keywords | myocardial perfusion tomography, 7-pinhole collimator, 201Tl myocardial imaging, nuclear cardiology, emission computed tomography |
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