| Japanese |
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| Title | Tl-201肺内取り込み増大による心筋viability過大評価の危険性 |
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| Subtitle | 原著 |
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| Authors | 田中健*, 中野元*, 上野孝志*, 加藤和三*, 阿部光樹**, 小船井良夫**, 上田英雄** |
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| Authors(kana) | |
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| Organization | *心臓血管研究所, **榊原記念病院 |
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| Journal | 核医学 |
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| Volume | 26 |
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| Number | 1 |
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| Page | 15-21 |
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| Year/Month | 1989/1 |
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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」 急性心筋梗塞におけるTl-201肺内取り込みのTl-201心筋平面像評価に対する影響を検討した. 急性期初期像を再分布像と比較し, 新たな欠損像が認められた場合に, 初期像では過大評価がなされたとした. 急性期に検査を行った61例中, 29例で再分布心筋像を撮像し得た. Tl-201肺内取り込み著明増加18例中6例を検討し, 前壁で5例, 側壁で1例の過大評価を認めた. 中等度増加21例中12例を検討し, 前壁で3例, 下壁で3例, さらに心尖部で1例の過大評価を認めた. また, Tl-201肺内取り込みが正常範囲である22例中11例を検討したが, 過大評価は認めなかった. 急性期初期像のみを用いると, 重症例ほどTl-201肺内取り込みが増大し, これを心筋像として捉え心筋viabilityの過大評価がなされ易いことが明らかとなった. Tl-201肺内取り込みの心筋像に対する影響を除くには, 再分布心筋像を用いるとよいことが示された. |
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| Practice | 臨床医学：一般 |
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| Keywords | Myocardial planar image, Thallium lung uptake, Myocardial viability |
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| English |
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| Title | Overestimation of Myocardial Viability Due to Increase of Thallium Lung Uptake |
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| Subtitle | |
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| Authors | Takeshi TANAKA*, Hajime NAKANO*, Takashi UENO*, Kazuzo KATOU*, Mitsuki ABE**, Yoshio OBUNAI**, Hideo UEDA** |
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| Authors(kana) | |
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| Organization | *Cardiovascular Institute, **Sakakibara Memorial Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 26 |
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| Number | 1 |
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| Page | 15-21 |
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| Year/Month | 1989/1 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Thallium lung uptake (TL-uptake) was usually treated as background for myocardial image and increase of TL-uptake in exercise test was considered as marker of depressed cardiac function. It was reported that marked increase of TL-uptake in patients with acute myocardial infarction (AMI) corresponded to acute severe congestive heart failure. Here effect of TL-uptake on myocardial planar images was studied in 61 patients with AMI. In acute phase anterior, LAO 30° and LAO 60° myocardial images were collected. In 29 cases of 61 cases 3 to 6 hours delayed images could be collected. Each myocardial images was divided to 3 division and both images were compared. In 5 of 6 patients with marked increase of TL-uptake new defects were noted in anterior division of delayed images and in one case also in lateral division. In 7 patients of 12 patients with moderate increase of TL-uptake new defects were also noted in delayed images, i.e. 3 in anterior, 3 in inferior and one in apical division. It was concluded that over estimation of myocardial viability due to marked increase of TL-uptake was often noted in patients with AMI accompanying severe congestion. It became clear that delayed images were necessary to correctly estimate myocardial viability in such case. |
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| Practice | Clinical medicine |
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| Keywords | Myocardial planar image, Thallium lung uptake, Myocardial viability |
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