| Japanese |
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| Title | データ処理装置USC-1によるガンマカメライメージのオンライン処理 |
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| Subtitle | 原著 |
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| Authors | 松本政典, 広田嘉久, 立志公和, 安永忠正 |
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| Organization | 熊本大学医学部放射線医学教室 (主任 : 片山健志教授) |
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| Journal | 核医学 |
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| Volume | 10 |
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| Number | 6 |
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| Page | 539-547 |
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| Year/Month | 1973/12 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「1. 緒言」ラジオアイソトープ(RI)の体内分布状態を二次元的な画像として測定記録する装置であるシンチスキャナやガンマカメラは, 臨床診断に広く利用されている. 特に, ガンマカメラは, 最近めざましい普及をみており, 分解能の向上などの性能改良にも種々の努力が払われ, かなりの成果があげられている. しかしながら, RIイメージは装置の固有分解能, 感度の不均一性, 打点の統計的変動, コリメータの分解能などの諸因子による種々のボケを含んだ質の悪い画像である. そこで, RIイメージの改善をはかり, より多くの価値ある情報を得るために, 電子計算機の利用が数年前より試みられ, 数多くの報告がなされている. 電子計算機のRIイメージ情報処理への応用には, 画質改良処理(ボケ修正, 均一性の補正, スムージング, サブトラクションなど), 定量的解析, 臓器あるいは臓器局所の動態機能の解析, 及びパターン認識による自動診断などがある. |
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| Practice | 臨床医学：一般 |
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| English |
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| Title | On-line Data Processing of Gamma Camera Image Using USC-1 System |
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| Subtitle | Original |
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| Authors | Masanori MATUMOTO, Yoshihisa HIROTA, Kimikazu TATESHI, Tadamasa YASUNAGA |
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| Authors(kana) | |
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| Organization | Department of Radiology, Kumamoto University Medical School (Director : Prof. Kenshi Katayama) |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 10 |
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| Number | 6 |
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| Page | 539-547 |
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| Year/Month | 1973/12 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Gamma camera is widely used to measure the distribution of the radioisotope in the body, but the image itself is inferior in quality, because this fact depends upon various factors, that's the non-uniformity of the sensitivity and the limitation of resolution of the detector, and statistical fluctuation of the radioactivity. Various methods of data processing of the image data from a gamma camera using the digital computer are under development in oder to obtain many and available information for the clinical diagnosis. In this paper, the analysis and display by data processing system USC-1 for radioisotope image by delay-line gamma camera (GCA-102) are described. This system is composed of 4K core memories, twin ADC, data control unit, MT recorder, PT puncher, PT reader, digital printer, XY recorder and CRT display, and is connected by on-line with gamma camera. This system is the wired program computer, so the all memories are used to store the isotope image, and the processing time is rapid, compared to the case of using another minicomputer. Many methods of image processing are done by this system: calibration of isocount levels, digital data threshold, three dimensional display, contrast enhancement, profile histogram, smoothing, subtraction, dynamic histograms on a regional area of interest, etc. |
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| Practice | Clinical medicine |
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