| Japanese |
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| Title | Transmission CTとEmission CTの同時収集による不均一吸収体の吸収補正の評価 - 心筋ファントムによる検討 - |
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| Subtitle | 短報 |
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| Authors | 大竹英則*, 行広雅士**, 福島裕美**, 今井俊幸*, 細野紀一*, 羽鳥昇*, 渡辺直行**, 平野恒夫**, 井上登美夫**, 高橋宗尊***, 伴隆一***, 遠藤啓吾** |
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| Authors(kana) | |
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| Organization | *群馬大学医学部附属病院中央放射線部, **核医学教室, ***島津製作所医用機器事業部技術部第3グループ |
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| Journal | 核医学 |
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| Volume | 33 |
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| Number | 3 |
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| Page | 273-277 |
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| Year/Month | 1996/3 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」Transmission computed tomography(TCT)とemission computed tomography(ECT)の同時収集による不均一吸収体の吸収補正(STEP)の基礎的検討を, 心筋ファントムを用いて行った. 3検出器型ガンマカメラに心臓用ファンビームコリメータを装着し, 99mTcを外部線源としたTCT像より吸収体の分布画像を作成し, 吸収補正を行った. 同方法によって得られた心筋断層像は, 心筋内RI分布の均一性が優れており, かつ高分解能のSPECT像が得られた. 本法はTCTとECTを同時に収集できるため両者の位置ずれがなく, かつ検査時間の短縮が計られる画期的な方法である. このため実用化に適しており臨床への応用が期待される. 「I. はじめに」Single photon emission computed tomography(SPECT)を用いた核医学検査では, 放出される放射線の体内での吸収や散乱は原理的に避けられない. |
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| Practice | 臨床医学：一般 |
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| Keywords | Simultaneous transmission emission protocol, TCT, SPECT, Attenuation correction. |
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| English |
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| Title | Evaluation of Non - Uniform Attenuation Correction Using Simultaneous Transmission and Emission Computed Tomography - Basic Analysis with Myocardial Phantom - |
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| Subtitle | Short Communication |
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| Authors | Hidenori OTAKE*, Masashi YUKIHIRO**, Yumi FUKUSHIMA**, Toshiyuki IMAI*, Kimitoshi HOSONO*, Noboru HATORI*, Naoyuki WATANABE**, Tsuneo HIRANO**, Tomio INOUE**, Munehiro TAKAHASHI***, Ryuuichi BAN***, Keigo ENDO** |
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| Authors(kana) | |
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| Organization | *Division of Central Diagnostic Radiology, **Department of Nuclear Medicine, Gunma University School of Medicine, ***Shimadzu CORP, R&D Department Medical Systems Division |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 33 |
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| Number | 3 |
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| Page | 273-277 |
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| Year/Month | 1996/3 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Simultaneous transmission emission protocol(STEP), developed for the non-uniform attenuation correction of single photon emission computed tomography(SPECT)was evaluated using the cardiac phantom prepared with and without a myocardial wall defect. Emission computed tomography(ECT)of the cardiac phantom using 201Tl was acquired. Transmission data(TCT)were taken using a line source of 99mTc. Myocardial images with STEP method were superior in the homogeneity of intramyocardial radioactivity and spatial resolution to the conventional SPECT images. This is an excellent method because of the accurate matching position between TCT and ECT images and shortening the examination time by simultaneous data acquisition. It would be clinically useful for diagnosing various myocardial diseases. |
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| Practice | Clinical medicine |
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| Keywords | Simultaneous transmission emission protocol, TCT, SPECT, Attenuation correction. |
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