| Japanese |
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| Title | 学習機能を有するcircumferential profile自動診断プログラム (CAD) による心筋短軸断層像の診断能の検討 |
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| Subtitle | 原著 |
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| Authors | 分校久志*, 小島一彦**, 多田明*, 中嶋憲一*, 滝淳一*, 南部一郎*, 利波紀久*, 久田欣一* |
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| Organization | *金沢大学医学部核医学教室, **医療技術短大部 |
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| Journal | 核医学 |
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| Volume | 21 |
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| Number | 6 |
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| Page | 713-722 |
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| Year/Month | 1984/6 |
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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」201Tl心筋イメージにおける, circumferential profile(CFP)の汎用データベースファイル(DB)の作成と, 学習機能を有するCFP自動診断プログラム(CAD)を用いて, 心筋短軸断層像における, 正常症例数(CN)の変化にともなう診断能の検討を行った. CADは, 1)入力, DB作成, 2)DB中のデータの訂正, 変更, 3)自動診断で構成される. 1), 2)の実行後, その時点のDB中の正常データを用いて, 毎回診断基準データを自動的に作成, 更新する. 正常16例, 虚血性心疾患17例の7-ピンホールにて, CNを4, 8, 12, 16例としたとき, 虚血性心疾患の有病正診率は100%, 88%, 88%, 88%, 無病正診率は44%, 94%, 100%, 94%. 正確度は73%, 91%, 94%, 91%と変化し, 8例以上でほぼ一定に収束した. 症例数が日々増加する日常臨床では, 学習機能を有する定量的自動診断が有用である. CADは, 201Tl心筋短軸断層像の診断に簡便で有用な方法であり, また, CFPを用いた他のRI分布評価のデータにも応用可能である. |
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| Practice | 臨床医学：一般 |
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| Keywords | Diagnostic efficiency, Intelligence program, Automatic diagnosis, Circumferential profile, Myocardial short axial SPECT. |
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| English |
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| Title | Evaluation of Diagnostic Efficiency of Intelligence Program for Automatic Diagnosis of Circumferential Profiles of Myocardial Short Axial SPECT |
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| Subtitle | Original Articles |
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| Authors | Hisashi BUNKO*, Kazuhiko KOJIMA**, Akira TADA*, Kenichi NAKAJIMA*, Junichi TAKI*, Ichiro NANBU*, Norihisa TONAMI*, Kinichi HISADA* |
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| Organization | *Department of Nuclear Medicine, School of Medicine, **School of Medical Technology, Kanazawa University |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 21 |
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| Number | 6 |
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| Page | 713-722 |
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| Year/Month | 1984/6 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary]Quantitative diagnosis using circumferential profile (CFP) is widely employed for Tl-201 myocardial imaging. However, its diagnostic efficiency is susceptible to the number and composition of the confirmed normal (CN) group. Intelligence program for CFP data file and automatic diagnosis (CAD), which was previously developed by us, was modified for creating universal data file (d-base) and evaluated its diagnostic efficiency for myocardial short axial images according to the number of CNs. CAD consists of following 3 major functions: (1) CFP data filing to d-base, (2) modification and correction of file data, and (3) automatic diagnosis of CFP. When function (1) or (2) is completed, new diagnostic criteria (mean-2 sd) are generated automatically using CN data in the d-base at that time. Because of this function, diagnostic criteria are changeable according to the number of CNs. Sensitivity (TP) and specificity (TN) of CAD program for Tl-201 7-pinhole images of 16 normals and 17 ischemic heart diseases (IHDs) were 100%, 44% (CN=4), 88%, 94%(CN=8 or 16) and 88%, 100% (CN=12), respectively. Diagnostic efficiency reached plateau in more than 8 CNs. Although number of patients were limited (8 CNs and 6 IHDs), results of CAD for short axial SPECT showed consistent tendency with 7-pinhole images. In conclusion, intelligence program is necessary for automatic diagnosis using quantitative criteria under the clinical condition of daily increasing informations. Automatic diagnosis of CFP using CAD program is simple, effective and useful for interpretation of Tl-201 myocardial short axial images. CAD program is applicable to any quantitative distribution study using CFPs. |
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| Practice | Clinical medicine |
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| Keywords | Diagnostic efficiency, Intelligence program, Automatic diagnosis, Circumferential profile, Myocardial short axial SPECT. |
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