| Japanese |
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| Title | 肝シンチグラムに関する研究 - 減算シンチグラムおよびECTについて - |
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| Subtitle | 原著 |
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| Authors | 河合武司* |
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| Authors(kana) | |
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| Organization | *大阪医科大学放射線医学教室 |
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| Journal | 核医学 |
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| Volume | 19 |
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| Number | 1 |
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| Page | 1-19 |
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| Year/Month | 1982/2 |
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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」肝シンチグラムに関する研究の一環として二種類の放射性同位元素を同時に測定可能にしたシンチカメラを用いて, 67Ga-citrateと198Au-colloid(または99mTc-phytate)を投与し, 減算シンチグラム(67Ga像-198Au像)を作成し, 限局性疾患78例について検討した. 一方, ECT(single photon emission computed tomography)の装置を試作し臨床的価値を評価した. ECTのデータ採取方法には立位被検者回転法と仰臥位検出器回転法の2法があり両者を画像的に比較すると大きな差は認めなかった. またファントーム実験にてデータ採取条件と検出能の検討を行った結果, 10度毎10秒で36方向が時間的にも適当で直径20mmの欠損の検出が可能であった. この条件で臨床例451例実施した. 減算シンチグラムは2回の放射性同位元素の投与が必要であり, ルーチン検査としては難点があるがECTは従来のシンチグラム(コロイドシンチグラム)に引き続き放射性同位元素の追加なしに実施でき, 検出率はX線CTと同程度であった. |
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| Practice | 臨床医学：一般 |
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| Keywords | Single photon emmission CT, Subtraction scintigram, Liver tumor, Liver Scintigram |
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| English |
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| Title | Studies on Liver Images by Subtraction Scintigram and ECT |
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| Subtitle | |
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| Authors | Takeshi KAWAI |
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| Authors(kana) | |
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| Organization | Department of Radiology, Osaka Medical College |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 19 |
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| Number | 1 |
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| Page | 1-19 |
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| Year/Month | 1982/2 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | In this report, double isotope method(subtraction scintigram), single photon emission computed tomography(ECT)and their clinical results were described. Materials: Seventy-eight cases by subtraction scintigram and 451 cases by ECT were examined and evaluated. Method: In subtraction scintigram, 67Ga-citrate(2mCi)was injected three days before the examination, and immediately after the intravenous injection of 198Au-colloid (300μCi), data were collected by a gamma camera system with two discriminators and a central processing unit. ECT was performed by rotating patient method or rotating detector method after the conventional liver scintigram with 99mTc-phytate(5-8 mCi). Seven cases were examined by both methods, and the images of multiprojection and transaxial ECT of the liver were evaluated. Results: Data collection of ECT from 36 directions with sampling time of 10 seconds per frame was best for the clinical use. The both rotating patient and rotating detector methods showed almost the same images in ECT. The detection rates of space occupying lesions(SOL) in liver were 82.1% by conventional scintigram, 96.1% by combination of conventional and subtraction scintigram, 92.9% by ECT, and 96.4% by X-ray CT. It was concluded that the combination of conventional scintigram and ECT showed almost the same detection rate as that of X-ray CT and was useful for detection of SOL in liver. |
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| Practice | Clinical medicine |
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| Keywords | Single photon emmission CT, Subtraction scintigram, Liver tumor, Liver Scintigram |
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