| Japanese |
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| Title | Emission Computed Tomographyによる食道癌のガリウム断層シンチグラム |
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| Subtitle | 原著 |
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| Authors | 服部孝雄*, 中川毅*, 竹田寛*, 前田寿登*, 田口光雄* |
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| Authors(kana) | |
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| Organization | *三重大学医学部放射線医学教室 |
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| Journal | 核医学 |
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| Volume | 20 |
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| Number | 2 |
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| Page | 125-134 |
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| Year/Month | 1983/3 |
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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」対向する2台の回転型ガンマカメラによるECT装置を用いて67Ga citrateによる食道癌の断層シンチグラムを施行し, その臨床的価値を検討した. 通常のシンチグラムでは対象とした6例のうち3例において, 微少集積のため, あるいは胸骨, 椎骨, 肺門, 肝臓などの正常集積と重なるために病巣への集積が判定困難であった. ECTでは6例すべてにおいて腫瘍集積が明瞭にしかも三次元的に描出された. 放射線治療前後の比較が行われた例ではECTによりその腫瘍集積の減少の程度がより明確となった. 食道内に留置された細いチューブに67Gaを注入して再度ECTを行い, チューブ内放射能のあるイメージとないイメージを対比する方法を試みた結果, 食道腫瘍への集積の確認, 外膜浸潤の有無の判定に有用であった. ガリウムシンチグラフィにECTを併用することは病巣の検出感度の向上, 病巣の三次元的広がりの認識, 治療経過の判定に有効であると期待される. |
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| Practice | 臨床医学：一般 |
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| Keywords | Emission computed tomography, 67Ga imaging, Esophageal cancer, Radiation therapy |
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| English |
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| Title | Gallium Tomoscintigraphic Imaging of Esophageal Cancer Using Emission Computed Tomography |
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| Subtitle | Original Articles |
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| Authors | Takao HATTORI*, Tsuyoshi NAKAGAWA*, Kan TAKEDA*, Hisato MAEDA*, Mitsuo TAGUCHI* |
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| Authors(kana) | |
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| Organization | Department of Radiology, Mie University, School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 20 |
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| Number | 2 |
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| Page | 125-134 |
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| Year/Month | 1983/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Emission computed tomography (ECT) was clinically evaluated in 67Ga imaging of esophageal cancer. ECT system used in this study is equipped with opposed dual large-field-of-view cameras (GCA 70A-S, Toshiba Co.). Data were acquired by rotating the two cameras 180° about the longitudinal axis of the patient. Total acquisition time was about 12 minutes. Multiple slices of transaxial, sagittal and coronal sections were reconstructed in a 64×64 matrix form using convolution algorithms. In three out of six cases studied the tumor uptake was not detected on conventional images, because the lesion was small, concentration of activity was poor or the lesion activity was overlapped with the neighbouring activities distributed to normal organs such as sternum, vertebra, liver and hilus. On ECT images, by contrast, abnormal uptake of the tumors was definitively detected in all the six cases. ECT imaging was also useful in estimating the effect of treatment by the decrease in 67Ga concentration. We have devised a special technique to repeat ECT scan with a thin tube filled with 67Ga solution inserted through the esophagus. By this technique, comparing paired images with and without the tube activity, exact location of the uptake against the esophagus and extraesophageal extension of the disease could be accurately evaluated in a three-dimensional field of view. ECT in gallium scanning is expected to be of great clinical value to elevate the confidence level of diagnosis in detecting, localizing and following up the diseases. |
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| Practice | Clinical medicine |
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| Keywords | Emission computed tomography, 67Ga imaging, Esophageal cancer, Radiation therapy |
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