Dental Journal (Majalah Kedokteran Gigi)
ISSN 1978-3728
Vol. 43 / No. 3 / Published : 2010-09
Order : 1, and page :107 - 112
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Original Article :
Computer aided diagnosis for osteoporosis based on trabecular bone analysis using panoramic radiographs
Author :
- Agus Zainal Arifin*1
- Anny Yuniarti*2
- Lutfiani Ratna Ddewi*3
- Hudan Studiawan*4
- Akira Asano *5
- Takashi Nakamoto2*6
- Akira Taguchi*7
- Arifzan Razak*8
- Department of Informatics, Faculty of Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya – Indonesia
- Department of Informatics, Faculty of Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya – Indonesia
- Department of Informatics, Faculty of Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya – Indonesia
- Department of Informatics, Faculty of Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya – Indonesia
- Graduate School of Engineering, Hiroshima University, Hiroshima–Japan
- Graduate School of Engineering, Hiroshima University, Hiroshima–Japan
- Department of Dental and Maxillofacial, Matsumoto Dental University, Nagano–Japan
- Faculty of Dentistry, Airlangga University, Surabaya–Indonesia
Abstract :
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.
Keyword :
Computer-aided, line strength, trabecular bone, osteoporosis, panoramic radiographs ,
References :
Gullberg B ,(1997) World-wide projections for hip fracture - : Osteoporos Int
Archive Article
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Volume : 43 / No. : 3 / Pub. : 2010-09 |
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