| Japanese |
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| Title | 冠動脈バイパス術における血流改善度の定量評価 - 201Tl同心円表示サブトラクション法を用いて - |
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| Subtitle | 原著 |
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| Authors | 進藤真*, 玉木長良**, 高橋範雄**, 大谷弘**, 河本雅秀**, 米倉義晴**, 野原隆司***, 神原啓文***, 伴敏彦****, 小西淳二** |
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| Authors(kana) | |
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| Organization | *水島協同病院内科, **京都大学医学部放射線核医学科, ***第三内科, ****心臓血管外科 |
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| Journal | 核医学 |
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| Volume | 30 |
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| Number | 7 |
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| Page | 743-751 |
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| Year/Month | 1993/7 |
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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」塩化タリウム(201Tl)心筋SPECT上の201Tl分布の変化を定量的に描出する同心円サブトラクション(BS)マップを用いて, 冠動脈バイパス術前後の血流変化の定量的解析を試みた. 虚血性心疾患23例につき, 負荷後, 遅延像間と術前後の負荷後像間でBSマップを作成し, 201Tl心筋SPECT上の視覚判定と対比検討した. 術前後の201Tl心筋SPECT上の視覚判定で明らかな血流改善を認めた区域のすべてが術前後BSマップ上15%以上を示し, 改善のない区域の60%が術前後BSマップ上10%未満を示した. また, 術前BSマップ上15%以上の再分布を示した区域の67%が術前後BSマップ上15%以上の血流改善を示し, 多くの症例で術前の再分布を示す術前BSマップと術前後の血流改善度を示す術前後BSマップのBSスコアの分布と広がりの一致を認めた. また, 血流低下部位に対する術後の血流改善予測診断能は視覚的評価に比して術前BSマップによる評価の方が感度が高く, 術前の心筋viability評価により有用な手段と思われた. 本法は術前後の血流改善の定量的描出法として, また術前後の血流改善の予測法として有用と考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | Emission computed tomography, Thallium-201, Ischemic heart disease, Coronary artery bypass surgery. |
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| English |
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| Title | Quantitative Assessment of Improvement in Perfusion after Coronary Bypass Grafting : Assessed by Thallium-201 Bull's Eye Subtraction Polar Map Method |
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| Authors | Makoto SHINDO*, Nagara TAMAKI**, Norio TAKAHASHI**, Masahide KAWAMOTO**, Hiroshi OHTANI**, Yoshiharu YONEKURA**, Ryuji NOHARA***, Hirofumi KAMBARA***, Toshihiko BAN****, Junji KONISHI** |
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| Authors(kana) | |
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| Organization | *Department of Internal Medicine, Mizushima Kyodo Hospital, **Department of Radiology and Nuclear Medicine, ***Third Division, Department of Internal Medicine, ****Department of Cardiovascular Surgery, Kyoto University Faculty of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 30 |
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| Number | 7 |
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| Page | 743-751 |
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| Year/Month | 1993/7 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]To assess redistribution (RD) and improvement in regional perfusion after coronary bypass grafting (CABG) on thallium-201 SPECT images quantitatively, the Bull's eye subtraction polar (BS) map was created. BS map was created after subtraction of a normalized bull's eye polar map from another normalized polar map. The quantitative assessment on this map was compared to the visual qualitative analysis in 23 patients (115 segments) who received CABG. All of the improved segments after CABG showed >= 15% on the BS map. On the other hand, 60% of the non improved segments showed < 10% on the BS map. Furthermore, 67% of the RD segments showing >= 15% on the BS map before CABG improved in perfusion by >= 15% on the BS map after CABG. On the BS map, an excellent correlation was observed between the extent of redistribution before CABG and the extent of improvement after CABG. Thus, BS map permits quantitative assessment of improvement in perfusion on Tl SPECT imaging, and this technique seems to be valuable for predicting improvement in perfusion after CABG. |
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| Practice | Clinical medicine |
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| Keywords | Emission computed tomography, Thallium-201, Ischemic heart disease, Coronary artery bypass surgery. |
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