1986 Fiscal Year Final Research Report Summary
Automatic screening system of the chest X-ray film on mass survey.
| Project/Area Number |
59870027
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
内科学一般
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| Research Institution | The Health Sciences Center, Chiba University. |
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Principal Investigator |
KINOSHITA Yasuhiro The Health Sciences Center, Chiba University., 国立大学(その他), 教授 (50009453)
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| Co-Investigator(Kenkyū-buntansha) |
YASUDA Yoshizumi Dep.of Electronics,Faculty of Eng.,Chiba University., 工学部, 助教授 (70009413)
EMORI Yasufumi Dep.of Electronics,Faculty of Eng.,Chiba University, 工学部, 教授 (50009221)
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| Project Period (FY) |
1984 – 1986
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| Keywords | Automatic screening / Chest X-ray Mass survey / フーリエ変換 |
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| Research Abstract |
In order to detect efficiently and rapidly chest abnormalities on mass survey, an automatic chest X-ray film screening system based on pattern recognition and image understanding was constructed. In the first stage, chest radiograms were classfied by M.D.Y.KINOSHITA in term of his deep experiences about the chest examination, and data-base for normal and abnormal chest radiograms were constructed.
In the second stage, algorithums for extracting features were developed,that is induvidual PA-chest X-ray films were scanned,digitized and processed by developed algorithmus. Finally,decision functions were derived and checked by data base of healthy subjects. Main procedures are as follows. (1) Tracing the boundary of the ver tebra,and upper,middle and lower lung fields,(2) Measuring a shape of the boundary and the contrast at the neighbouring field of the boundary and (3) Judging abnormalities by the measurement coefficients.
The results indicate that our screening system could detect precisely abnormal shadows in the lung,cardiac enlargement,diaphragmatic deformations and scoliosis.
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