Japanese
Title頭部専用リング型断層装置の123I-IMP SPECT像による脳血管障害の診断精度に関するグループ研究 - ROC解析を中心に -
Subtitle原著
Authors町田喜久雄*1, 松本徹*2, 本田憲業*1, 間宮敏雄*1, 高橋卓*1, 瀧島輝雄*1, 釜野剛*1, 玉城聡*1, 飯沼武*2, 舘野之男*2, 福久健二郎*2, 村田啓*3, 趙圭一*3, 宇野公一*4, 蓑島聡*4, 岡田淳一*4, 久保敦司*5, 塚谷康司*5, 石井勝己*6, 油井信春*7, 石原真木子*7, 川上憲司*8, 小山田日吉丸*9, 中島哲夫*10
Authors(kana)
Organization*1埼玉医科大学総合医療センター, *2放射線医学総合研究所, *3虎の門病院, *4千葉大学, *5慶應大学, *6北里大学, *7千葉県がんセンター, *8東京慈恵会医科大学, *9癌研究会癌研究所附属病院, *10埼玉県がんセンター
Journal核医学
Volume28
Number11
Page1301-1312
Year/Month1991/11
Article原著
Publisher日本核医学会
Abstract「要旨」1施設の頭部専用リング型断層装置で撮像された画質の揃った123I-IMP SPECT像を自施設および他施設に所属する多数の医師が読影し, 欠損や再分布を検出する実験を行った. 実験データをROC解析することによりSPECT診断の医師全体の精度とその医師間変動(客観性)を評価した. さらに, XCT像やその診断報告書も併用して123I-IMP SPECTを再読影する実験を行い, XCTの情報がSPECT診断の結果にどの程度関与するか(独自性)を評価した. その結果, SPECTによる病変の存在診断のシステム全体としての性能およびその全体的な医師間変動はXCTを追加しても顕著な変化はなく, 診断の独自性を認めた. しかし, 医師個人のレベルでは, 医師間における診断能の個人差はXCTの併用により拡大される傾向がありSPECT診断の客観性に影響を与えたことが確認された.
Practice臨床医学：一般
KeywordsBrain SPECT, Efficacy study, Reading experiment.
English
TitleThe Group Study of Diagnostic Efficacy of Cerebro-Vascular Disease by I-123 IMP SPECT Images Obtained with Ring Type SPECT Scanner - The ROC Analysis on the Diagnosis of Perfusion Defect and Redistribution -
Subtitle
AuthorsKikuo MACHIDA*1, Toru MATSUMOTO*2, Norinari HONDA*1, Toshio MAMIYA*1, Taku TAKAHASHI*1, Teruo TAKISHIMA*1, Tsuyoshi KAMANO*1, Satoshi TAMAKI*1, Takeshi A IINUMA*2, Yukio TATENO*2, Kenjiro FUKUHISA*3, Hajime MURATA*4, Keiichi CHO*4, Kimiichi UNO*5, Satoshi MINOSHIMA*5, Junichi OKADA*5, Atsushi KUBO*6, Yasushi TSUKATANI*6, Katsumi ISHII*7, Nobuharu YUI*8, Makiko ISHIHARA*8, Kenji KAWAKAMI*9, Hiyoshimaru OYAMADA*10, Tetsuo NAKAJIMA*11
Authors(kana)
Organization*1Department of Radiology Saitama Medical Center, Saitama Medical School, *2Division of Clinical Research, National Institute of Radiological Sciences, *3Division of Technical Services, National Institute of Radiological Sciences, *4Department of Nuclear Medicine, Toranomon Hospital, *5Department of Radiology, Chiba University, *6Department of Radiology, Keio University, *7Department of Radiology, Kitasato University, *8Department of Nuclear Medicine, Chiba Cancer Center, *9Department of Radiology, Jikei Medical School, *10Department of Nuclear Medicine, Ganken Hospital, *11Department of Radiology, Saitama Cancer Center
JournalThe Japanese Journal of nuclear medicine
Volume28
Number11
Page1301-1312
Year/Month1991/11
ArticleOriginal article
PublisherTHE JAPANESE SOCIETY OF NUCLEAR MEDICINE
Abstract[Summary]We performed two image reading experiments in order to investigate the diagnostic capability of I-123 IMP SPECT obtained by the ring type SPECT scanner in cerebro-vascular disease. Fourteen physicians diagnosed SPECT images of 55 cases with reference to clinical neurological informations, first without brain XCT images and second with XCT images. Each physician detected perfusion defects and redistributions of I-123 IMP and assigned a confidence level of abnormality for these SPECT findings by means of five rating method. From results obtained by ROC analysis, we concluded as follows: (1) Generally, I-123 IMP SPECT is a stable diagnostic modality in the diagnosis of cerebro-vascular disease and the image reading of XCT had no effects on the diagnosis of SPECT on the whole of physician, (2) However, there were unnegligible differences among individuals in the detectability of findings and the effect of XCT image reading, (3) Detectability of redistribution of I-123 IMP was lower than that of perfusion defect and inter-observer variation in the diagnostic performance for redistribution was larger than that of perfusion defect. The results suggest that it is necessary to standardize diagnostic criteria among physicians for redistribution of I-123 IMP.
PracticeClinical medicine
KeywordsBrain SPECT, Efficacy study, Reading experiment.

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