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  Computer aided diagnosis for osteoporosis based on trabecular bone analysis using panoramic radiographs  
Diupload oleh : Anny Yuniarti, S.Kom, M.Comp.Sc
Pengarang : Agus Zainal Arifin, Anny Yuniarti, Lutfiani Ratna Ddewi, Hudan Studiawan, Akira Asano, Takashi Nakamoto, Akira Taguchi, Arifzan Razak
Tahun : 2010
Dipublikasikan di : Dental Journal (Majalah Kedokteran Gigi), Vol. 43 No. 3, September 2010.
Jenis Jurnal : Jurnal Terakreditasi
Eksternal Link : http://viplab.if.its.ac.id/wp-content/uploads/2012/02/dental.pdf
Bidang Penelitian : Biomedical Engineering
Abstrak : Background: Mandibular bone on panoramic radiographs has been proven to be useful for identifying postmenopausal women with low skeletal bone mineral density (BMD). One of the important parts of mandibular bone is trabecular bone. Trabecular bone architecture is one of the factors that governs bone strength and may be categorized as a contributor to bone quality. Purpose: The purposes of this study were to develop a computer-aided system for measuring trabecular bone line strength on panoramic radiographs in identifying postmenopausal women with osteoporosis and to clarify the diagnostic efficacy of the system. Methods: Reduction and expansion of trabecular bone sample images using a two level gaussian pyramid for removing noises and small segments are first introduced. Then, line strength at each pixel was calculated based on its existence on the trabecular bone with emphasizes line segment which has similar orientation with the root of tooth. The density was measured with respect to line strength of segment structure which has similar orientation with the root of tooth, either on the left and the right in the mandibular bone. Number of pixels in the line segment area was compared with a threshold value to determine whether normal or osteoporosis. Results: From experiment on 100 data, we achieved accuracy of 88%, sensitivity of 92%, and specificity of 86.7%. Conclusion: The computer-aided system of trabecular bone analysis may be useful for detecting osteoporosis using panoramic radiographs. Key words: Computer-aided, line strength, trabecular bone, osteoporosis, panoramic radiographs
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