| Japanese |
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| Title | 99mTc-DTPAを用いた腎動態検査におけるFactor Analysisの臨床的検討 - 正常腎と移植腎について - |
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| Subtitle | 《短報》 |
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| Authors | 大竹英二*, 村田啓**, 児島陽一**, 葛原敬八郎***, 外山比南子****, 佐藤友彦*****, 細羽実*****, 和迩秀信***** |
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| Authors(kana) | |
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| Organization | *東京専売病院放射線科, **虎の門病院放射線科, ***腎センター, ****筑波大学臨床医学系, *****島津製作所医用機器事業部 |
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| Journal | 核医学 |
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| Volume | 23 |
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| Number | 10 |
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| Page | 1455-1458 |
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| Year/Month | 1986/10 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「I. はじめに」Factor Analysisはダイナミックデータの数学的処理により対象臓器の機能成分を抽出し, この機能成分を用いて対象臓器の形態成分を求める新しいRIの動態解析法である. 最近, 心臓, 肺, 腎臓など各種臓器に臨床応用されるようになってきたが, われわれは99mTc-DTPAによる移植腎の動態解析に応用し, Factor Analysisの有用性を検討したので報告する.「II. 対象および方法」正常2症例と自家腎移植6例を含む腎移植13症例を対象とした. データ収集は99mTc-DTPA 370〜555MBq (10〜15mCi) を静注後, 正常例では後面から, 腎移植例では前面からγ・カメラZLC-7500 (Siemens社製) にて撮影し, 初期の血流相では2秒ごとに30フレーム, 機能・排泄相では30秒ごとに60フレームをScintipac-2400 (島津製作所) に64×64マトリックス・サイズ (視野 : 38.7cmφ) で入力した. これらのデータをもとに, まず初期の血流相のデータを30秒ごと2フレームに加算し, 機能・排泄相のデータと同様にし, フィルター処理 (Butterworth filter) を行い, さらに腎臓部分を約2.7倍に拡大し, Factor Analysisを行った. なお, Factor AnalysisのソフトウエアはBarberおよびDi PaolaらのAlgorithmを利用したものである. |
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| Practice | 臨床医学：一般 |
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| Keywords | Factor analysis, Renal dynamic study, Transplanted kidney. |
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| English |
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| Title | Clinical Evaluation of Factor Analysis in Renal Dynamic Studies Using 99mTc-DTPA - Normal Kidneys and Transplanted Kidneys - |
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| Subtitle | |
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| Authors | Eiji OHTAKE*, Hajime MURATA**, Yohichi KOJIMA**, Keihachiro KUZUHARA***, Hinako TOYAMA****, Tomohiko SATOH*****, Minoru HOSOBA*****, Hidenobu WANI***** |
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| Authors(kana) | |
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| Organization | *Division of Radiology, Tokyo Senbai Hospital, **Division of Nuclear Medicine, ***Kidney Center, Toranomon Hospital, ****Institute of Clinical Medicine, The University of Tsukuba, *****Medical System Division, Shimadzu Corporation |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 23 |
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| Number | 10 |
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| Page | 1455-1458 |
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| Year/Month | 1986/10 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] : The clinical usefulness of factor analysis was assessed in renal dynamic studies using 99mTc-DTPA. The optimal conditions for factor analysis of renal dynamic studies were decided in normal kidneys, and then transplanted kidneys were examined with these conditions. The results were summarized as follows : 1) When normal renal images were magnified 2.7 times and compressed into 8×8 dixels, it was suitable for factor analysis to extract three factors from 24 or 32 dixels. 2) Since the factors of vascular, renal and renal pelvic phases were automatically extracted by factor analysis, it was possible to obtain more detailed informations from these factor images than conventional renograms. 3) Factor analysis was useful for follow-up studies in patients with transplanted kidney and the contribution ratio of each factor was considered to be one of the indices evaluating the sick conditions. |
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| Practice | Clinical medicine |
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| Keywords | Factor analysis, Renal dynamic study, Transplanted kidney. |
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