| Japanese |
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| Title | N-13アンモニアによる心筋ポジトロンCT (第1報) - タリウムECTとの対比検討 - |
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| Subtitle | 原著 |
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| Authors | 玉木長良*, 千田道雄*, 米倉義晴*, 児玉秋生*, 佐治英郎*, 棚田修二*, 村田喜代史*, 鳥塚莞爾*, 小西裕**, 伴敏彦**, 神原啓文***, 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, **心臓血管外科, ***第三内科 |
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| Journal | 核医学 |
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| Volume | 22 |
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| Number | 2 |
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| Page | 185-191 |
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| Year/Month | 1985/2 |
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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」全身用ポジトロンCT装置を用いてN-13アンモニアの心筋多層ポジトロンCT (PCT) 像を作成し, その特長をタリウムシングルフォトンECT (SPECT) と対比検討した. Derenzo phantomではPCTは2.5〜3.0mmのhot spotの描出が可能なのに対し, SPECTでは5.0mmがかろうじて分解できたにすぎず, PCTは分解能にすぐれていた. 臨床例11例の安静時の検討でもPCTは高い分解能と多い収集カウントのため, SPECTに比べ画像が鮮明であり, 心筋壁は薄く, 乳頭筋も描出可能で, 全例で右室の描出もみられた. また心筋梗塞8例中2例に肺 (とりわけ背側肺) へのアンモニアの集積増加がみられ, 肺うっ血の評価に有用と考えられた. 一方SPECTは, 心筋が厚く描出され, 右室や肺の評価には困難であった. 心筋梗塞8例全例でPCT, SPECTともに病変を検出することができた. ただSPECTは横断断層像だけでなく, 任意の断層像の再構成が容易にでき, 病変の広がりを把握するうえで有利と考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Positron tomography, N-13 ammonia, Myocardium, Thallium-201, Cmission CT |
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| English |
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| Title | N-13 Ammonia Myocardial Positron Computed Tomography - (1) Comparative Study with Thallium-201 SPECT - |
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| Subtitle | Original Articles |
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| Authors | Nagara TAMAKI*, Michio SENDA*, Yoshiharu YONEKURA*, Shusei KODAMA*, Hideo SAJI*, Shuji TANADA*, Kiyoshi MURATA*, Kanji TORlZUKA*, Yutaka KONISHI**, Toshihiko BAN**, Hirofumi KAMBARA***, Chuichi KAWAI*** |
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| Authors(kana) | |
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| Organization | *Department of Radiology and Nuclear Medicine, **Department of Cardiovascular Surgery, ***Department of Internal Medicine, Kyoto University Medical School |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 22 |
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| Number | 2 |
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| Page | 185-191 |
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| Year/Month | 1985/2 |
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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 positron computed tomography (PCT) was obtained in 11 cases and the images were compared with thallium-201 single-photon emission computed tomography (SPECT) . The myocardial PCT was performed at rest after 10-20mCi of N-13 labeled ammonia injection using whole-body multislice PCT device (PositologicaIII) . The PCT clearly delineated 25-3.0mm hot spots while the SPECT barely showed 5.0mm hot spots of Derenzo phantom. The myocardial images looked better in PCT because of the better spatial resolution and count statistics. The myocardium looked thinner and the papillary muscle was visualized by PCT. The PCT also showed the right ventricle in each case. Furthermore, PCT detected increased lung uptake of ammonia in 2 of the 8 cases with myocardial infarction, suggesting presence of pulmonary congestion. Perfusion defect was clearly seen by PCT as well as SPECT. However, the cardiac short-axis and long-axis sections which were easily obtained by SPECT were useful for the localization of the lesion. We conclude that both PCT and SPECT were valuable for the assessment of coronary artery disease. |
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| Practice | Clinical medicine |
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| Keywords | Positron tomography, N-13 ammonia, Myocardium, Thallium-201, Cmission CT |
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