書誌事項
- タイトル別名
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- Method for Graduation of Osteoporosis by Applying Spatial Frequency Analysis and Cluster Analysis to Digital Radiographs of Lumbar Vertebrae
- ヨウツイ ディジタル Xセン ガゾウ ノ クウカン シュウハスウ カイセキ ト クラスター ブンセキ ニ ヨル コツソショウカ ブンルイホウ
この論文をさがす
抄録
Diagnostic standard of osteoporosis in the Japanese Society for Bone and Mineral Research has proposed to diagnose osteoporosis by visual interpretation of bone contraction degree on lateral lumber plain X-ray and measurement of bone density using Dual Energy X-ray Absorptiometry (DXA) method. However doctor's experience and knowledge might affect those results. Therefore, a method that osteoporosis can be diagnosed objectively is required. In this paper, the method for graduation of osteoporosis is proposed. Using public domain software, ImageJ, we evaluate bone contraction degree by spatial frequency analysis of region of interest (ROI) (64×64 matrix) on the lateral view of third lumbar vertebrae of digital radiographs. Digital radiographs of 48 patients are examined with normalized integral value calculated by power spectrum values of the 2 Dimension Fast Fourier Transform (2DFFT), and accuracies are found by cluster analysis using the obtained values of 48 patients. Next, these radiographs are diagnosed of osteoporosis by doctors (specialists+non-specialists), and we find accuracies by doctors. Both accuracies were 89.6% (computer) and 73.6% (doctors). As the result of the analysis on these values, it is found that objective evaluation of osteoporosis can be performed by analysis of computer using the proposed method.
収録刊行物
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- 生体医工学
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生体医工学 46 (4), 465-470, 2008
公益社団法人 日本生体医工学会
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詳細情報 詳細情報について
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- CRID
- 1390001205267263744
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- NII論文ID
- 130004494071
- 110006989902
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- NII書誌ID
- AA11633569
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- ISSN
- 18814379
- 1347443X
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- NDL書誌ID
- 9720436
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可