| Japanese |
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| Title | 肝シンチグラフィ斜位像の必要性に関する検討 - 特に限局性病巣検出能に関して - |
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| Subtitle | 原著 |
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| Authors | 小泉潔*, 関宏恭*, 滝淳一*, 横山邦彦*, 多田明*, 分校久志*, 油野民雄*, 利波紀久*, 久田欣一* |
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| Authors(kana) | |
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| Organization | *金沢大学医学部核医学教室 |
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| Journal | 核医学 |
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| Volume | 20 |
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| Number | 8 |
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| Page | 1145-1153 |
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| Year/Month | 1983/9 |
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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」肝スキャン斜位像の必要性, 特に肝内限局性病巣 (以下SOL) の検出能に関して検討を加えた. SOL有の20例およびSOL無の84例を対象とし, まず前後左右の4方向像にて所見を判定し, 次いで右前斜位および左前斜位45度像を追加することにより, その判定が変動するかを検討した. 判定は核医学経験6年以上の熟練者3名および経験3か月の新人3名の計6名の医師が行った. 斜位像追加によるSOL有無判定の変動は新人に多い傾向であった. SOL検出のsensitivityは3名の判定医で改善し, specificityの改善は1名のみであった. 結局, accuracyでは4名で改善が見られ, 新人3名は全員改善を認めた. ROC解析では, 新人においては6方向像による判定が優れていたが, 熟練者ではむしろ4方向像が優れていた. 結論として, 斜位像を追加する意義は経験の少ない判定医においてのみ認められたが, 症例によっては斜位像が有用である例も存在した. |
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| Practice | 臨床医学：一般 |
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| Keywords | Liver scintigraphy, Oblique view, ROC analyisis, Space occupying lesions, Detectability |
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| English |
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| Title | Are Oblique Views Necessary for Detecting Space Occupying Lesions in Liver Scintigraphy ? |
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| Authors | Kiyoshi KOIZUMI, Hiroyasu SEKIK, Junichi TAKI, Kunihiko YOKOYAMA, Akira TADA, Hisashi BUNGO, Tamio ABURANO, Norihisa TONAMI, Kinichi HISADA |
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| Authors(kana) | |
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| Organization | Department of Nuclear Medicine School of Medicine, kanazawa University |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 20 |
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| Number | 8 |
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| Page | 1145-1153 |
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| Year/Month | 1983/9 |
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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 colloid scanning of the liver to determine the presence or absence of SOL (s) , it has been suggested that oblique views are desirable. However, it is not popular in Japan to obtain oblique views in routine liver imgaing. The present study was conducted to determine whether such additional views are necessary or not. Liver images of 20 patients with SOL (s) and 84 patients without SOL, all of which were confirmed by ultrasonography, transmission computed tomography and/or clinical course, were evaluated initially using 4 standard views and then adding oblique views by 6 physicians (3 experts and 3 freshmen in nuclear medicine) . The numbers of cases showing different interpretation between 4 views and 6 views were 15, 10 and 13 each when interpreted by 3 experts. However, those were 21, 33 and 18 each when interpreted by 3 freshmen. Sensitivity for detecting SOL was improved in 3 physicians by adding oblique views, but was the same in other 3. Specificity was improved in only one physicinan. Overall accuracy was consequently improved in 4 physicians and was deteriorated in 2 physicians. ROC analysis revealed that in the freshman group more accurate interpretation was attained by using 6 views, but in the expert group false-positive cases were increased by using 6 views. Some cases showing usefulness for detecting SOL were presented. In conclusion, oblique views gave more accurate interpretation in inexpertienced observers, and useful information in some cases. |
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| Practice | Clinical medicine |
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| Keywords | Liver scintigraphy, Oblique view, ROC analyisis, Space occupying lesions, Detectability |
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