| Japanese |
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| Title | 123I-MIBG, 201TlCl心筋SPECTにおける2核種同時収集, 画像作成法の検討 |
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| Subtitle | 原著 |
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| Authors | 小野口昌久*, 佐藤圭子**,†, 村田啓**, 高尾祐治**, 大竹英二**, 加藤健一***, 斎藤京子*, 外山比南子****, 上野孝志***** |
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| Authors(kana) | |
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| Organization | *虎の門病院放射線部, **放射線科, ***循環器センター内科, ****東京都老人総合研究所, *****心臓血管研究所, †現;順天堂大学循環器内科 |
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| Journal | 核医学 |
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| Volume | 28 |
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| Number | 10 |
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| Page | 1159-1166 |
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| Year/Month | 1991/10 |
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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」123I-MIBGと201TlClの2核種同時収集の場合, 両核種は互いにcrosstalkし, これが画像劣化の原因となる. 今回, 良質の画像を得る目的で, 心筋ファントムを用いてcrosstalkの補正を検討した. ファントム実験から求めた201Tlから123Iへのcrosstalk(R1)と, 123Iから201Tlへのcrosstalk(R2)は心筋壁内でそれぞれほぼ一定であったが, R1はR2より低値であった. R1, R2を用いてcrosstalkの補正をした. 限局性の欠損を設定した心筋ファントムでは, crosstalkを補正することにより, 視覚的にもcontrastからも欠損がより明瞭となり, この補正法が有効と考えられた. 臨床例についても, ファントムから求めた一律のcrosstalkを用いて補正を試みた. 補正により画質が改善し, また偽性欠損の消失した症例もみられ, 本補正法が臨床例でも有用であることが示唆された. |
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| Practice | 臨床医学：一般 |
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| Keywords | Dual energy acquisition, Crosstalk, Myocardial SPECT image, 123I-MIBG, 201TlCl. |
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| English |
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| Title | A Study on Crosstalk Correction in Dual Energy Acquisition of 123I-MIBG and 201TlCl in Myocardial SPECT |
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| Subtitle | Original Articles |
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| Authors | Masahisa ONOGUCHI*, Keiko SATOH*, Hajime MURATA*, Yuji TAKAO*, Eiji OHTAKE*, Kenichi KATOH**, Kyoko SAITOH*, Hinako TOYAMA***, Takashi UENO**** |
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| Authors(kana) | |
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| Organization | *Division of Nuclear Medicine, **Center for Cardiology, Toranomon Hospital, ***Tokyo Metropolitan Institute of Gerontology, ****The Cardiovascular Institute |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 28 |
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| Number | 10 |
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| Page | 1159-1166 |
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| Year/Month | 1991/10 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]In the simultaneous dual energy acquisition, energy spectrums of two radionuclides crosstalk each other and this phenomenon is a cause of the poor quality of images. In order to obtain the image of high quality in dual energy acquisition of 123I-MIBG and 201TlCl, a crosstalk correction method was originated. The crosstalk from 201Tl to 123I window (RI) and the crosstalk from 123I to 201Tl window (R2) were determined by the cardiac phantom studies. R1 and R2 showed almost constant value throughout the myocardial wall. The crosstalk correction was performed using RI and R2. After the crosstalk correction, the defect region placed in the cardiac phantom was detected more clearly both in visual interpretation and in quantitative analysis. The crosstalk correction method with R1 and R2 was applied to some clinical cases. By the crosstalk correction, the quality of image was improved and a false defect caused by crosstalk disappeared in a clinical case. The crosstalk correction was considered to be useful for improving the quality of image on dual energy acquisition. |
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| Practice | Clinical medicine |
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| Keywords | Dual energy acquisition, Crosstalk, Myocardial SPECT image, 123I-MIBG, 201TlCl. |
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