骨梁像のスペクトル解析 : 基礎的実験とシミュレーション

概要

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The classification, proposed by the Jikei University School of Medicine, is widely used as criteria for the atrophy of the bone, when a doctor has diagnosed osteoporosis. Some authors criticize this classification. They believe that there are not enough steps for evaluation and that it is too subjective. Using digital image processing, we can evaluate the trabecular patterns quantitatively, by a spectral analysis of the patterns on the lateral view of lumbar vertebrae. Also, we can add an objective base to the classification. Some simulated patterns and radiographs of patients were examined with the Fast Fourier transform (FFT) and with the Maximum entropy method (MEM). The results of our study indicate that we can evaluate the spatial frequency of the peak using MEM, and that the peak values can be evaluated by FFT. Our method will offer useful information for the diagnosis of osteoporosis.
社団法人日本放射線技術学会の論文
1991-09-01