| Japanese |
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| Title | 半横臥位180度撮像法によるTl-201心筋SPECT |
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| Subtitle | 原著 |
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| Authors | 鈴木晃夫*, 武藤誠治***, 大島統男**, 斎藤宏***, 加納浩一*, 佐藤昭彦*, 横田充弘*, 林博史* |
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| Organization | *名古屋大学医学部第一内科, **放射線科, ***津島市民病院 |
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| Journal | 核医学 |
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| Volume | 25 |
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| Number | 11 |
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| Page | 1255-1262 |
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| Year/Month | 1988/11 |
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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」 Single photon emission computed tomography(SPECT)画像の画質を改善する目的で, 一般に使用されている回転型汎用デジタルγカメラが, 被検者に接近可能な検査台を試作した. その試作検査台上に被検者を台から右横臥位50度として180度スキャンする半横臥位180度撮像法(semidecubitus position scanning method)を試みた. この方法では, 検出器の回転半径を従来の撮像方法に比し約25%短縮することができ, かつ検査台によるγ線吸収の影響を除外できた. 本法をThallium-201心筋SPECTに応用したところ, 心臓ファントムおよび臨床例の収集データと再構成画像の画質は向上し, 特に従来法での心筋後下壁領域のカウントの減弱が本法で改善された. 本法は, Thallium-201心筋SPECTにおける新しい撮像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 | Thallium-201, SPECT, Heart |
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| English |
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| Title | Semidecubitus Position Scanning Method for Thallium-201 Cardiac Single Photon Emission Computed Tomography |
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| Authors | Akio SUZUKI*, Seiji MUTO***, Motoo OSHIMA**, Hiroshi SAITO***, Koichi KANO*, Akihiko SATO*, Mitsuhiro YOKOTA*, Hiroshi HAYASHI* |
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| Authors(kana) | |
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| Organization | *First Department of Internal Medicine, **Department of Radilogy, Nagoya University School of Medicine, ***Tsushima City Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 25 |
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| Number | 11 |
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| Page | 1255-1262 |
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| Year/Month | 1988/11 |
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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 improve the image quality of thallium-201 cardiac single photon emission computed tomography(SPECT) we designed a new scanning method using a rotating gamma camera with 180-degree data collection. A new imaging bed was manufactured in order to shorten the radial length of gamma camera rotation and to avoid the attenuation of gamma ray by the bed during data acquisition. A patient lay on the bed in right semidecubitus (50-degree) position and dropped his right arm from the bed. By this method, the radial length of the camera rotation was shortened about 25% compared with the conventional scanning method. In addition, the attenuation of the imaging bed was neglected because the projected direction was not overlapped over the bed during data acquisition from left posterior oblique views. Using this new scanning method, tomographic images showed better contrast in both phantom and clinical studies and an increased uptake of radiotracer in cardiac posteroinferior wall compared with the conventional scanning method. In conclusion, semidecubitus position scanning method will be useful for thallium-201 cardiac SPECT. |
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| Practice | Clinical medicine |
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| Keywords | Thallium-201, SPECT, Heart |
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