| Japanese |
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| Title | 回転型ガンマカメラによる201Tl心筋断層像 : 特に7ピンホールコリメータによる断層法との比較検討 - (第2報) 臨床的検討 - |
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| Subtitle | 原著 |
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| Authors | 玉木長良*, 向井孝夫*, 石井靖*, 米倉義晴*, 山本和高*, 湊小太郎*, 藤田透*, 鳥塚莞爾*, 田巻俊一**, 神原啓文**, 河合忠一** |
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| Organization | *京都大学医学部放射線核医学科, **第3内科 |
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| Journal | 核医学 |
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| Volume | 18 |
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| Number | 6 |
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| Page | 801-808 |
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| Year/Month | 1981/7 |
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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」正常人17例, 心筋梗塞23例の計40例に, 従来の201Tlシンチグラム(PLAN)の直後に7ピンホールコリメータによる断層像(7P)と回転型ガンマカメラによるエミッションCT像(SPECT)を作成し, 臨床的有用性を比較検討した. 心筋梗塞診断のsensitivityはPLAN(74%)に比べ7P(91%), SPECT(96%)ともに向上したが, 7Pでは5例にfalse positive例がみられ, specificityは低下した. (PLAN:94%, 7P:71%, SPECT:88%), 従ってaccuracyは7P(83%)ではPLAN(83%)と変らなかったが, SPECT(93%)では明らかな改善がみられた. SPCETは22分の撮像時間で, 横断, 前額, 矢状のそれぞれ多層断層像が得られ, 病巣部を接線方向にみる最適断層面で評価できる点で有用であった. しかし, SPECTによる心拍同期断層像では, 心プール像で40分, 心筋像で60分(99mTc-赤血球20mCi, 201Tl 2mCi投与下でいずれもR-R間隔6等分)と撮像時間が長く, 今後機器や核種の工夫による改善が望まれた. |
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| Practice | 臨床医学：一般 |
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| Keywords | 201Tl myocardial imaging emission computed tomography rotating gamma: camera seven-pinhole tomography myocardial infarction |
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| English |
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| Title | Evaluation of Emission Computed Tomography Using a Rotating Gamma Camera for Thallium-201 Myocardial Imaging : (2) Clinical Study |
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| Subtitle | Original Articles |
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| Authors | Nagara TAMAKI, Takao MUKAI, Yasushi ISHII, Yoshiharu YONEKURA, Kazutaka YAMAMOTO, Kotaro MINATO, Toru FUJITA, Kanji TORIZUKA, Shunichi TAMAKI*, Hirofumi KAMBARA*, Chuichi KAWAI* |
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| Authors(kana) | |
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| Organization | Department of Radiology and Nuclear Medicine, *3rd Division, Department of Internal Medicine, Kyoto University Faculty of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 18 |
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| Number | 6 |
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| Page | 801-808 |
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| Year/Month | 1981/7 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Single-photon emission computed tomography (SPECT) for thallium myocardial imaging using a rotating gamma camera was clinically evaluated in comparison with planar imaging and seven-pinhole tomography (7P). Seventeen normal persons and 23 patients with prior myocardial infarction were injected with 2 mCi of thallium- 201 at rest and examined sequentially by all three modalities. Imaging time was 22 min for myocardial SPECT yielding transaxial, frontal, and sagittal sections, and 60 min for gated myocardial SPECT. In the detection of myocardial infarction, SPECT showed both high sensitivity (96%) and specificity (88%), while 7P method improved sensitivity (91%) but decreased specificity (71%) compared with planar imaging (74% and 94%, respectively). Thus, the overall accuracy in SPECT was improved (93%), whereas 7P was not significantly improved (83%) in comparison with planar imaging (83%). Our study indicates that SPECT will provide the most reliable informations in the evaluation of ischemic heart disease. |
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| Practice | Clinical medicine |
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| Keywords | 201Tl myocardial imaging emission computed tomography rotating gamma: camera seven-pinhole tomography myocardial infarction |
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