naa a22 4500 51080716X CHVBK 20180411083423.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s11548-012-0800-8 doi (NATIONALLICENCE)springer-10.1007/s11548-012-0800-8 Automated measurement of mandibular cortical width on dental panoramic radiographs [Elektronische Daten] [Chisako Muramatsu, Takuya Matsumoto, Tatsuro Hayashi, Takeshi Hara, Akitoshi Katsumata, Xiangrong Zhou, Yukihiro Iida, Masato Matsuoka, Takashi Wakisaka, Hiroshi Fujita] PurposeMandibular cortical width (MCW) measured on dental panoramic radiographs (DPRs) was significantly correlated with bone mineral density. We developed a computer-aided diagnosis scheme that automatically measures MCW to assist dentists in describing a possible osteoporotic risk and suggesting further examinations. MethodsIn our approach, potential mandible edges are detected by modified Canny edge detector. On the basis of the edge information, a contour model is selected from the reference data and is fitted to the test case by using the active contour model. The reference mental foramina positions of the model are employed as the MCW measurement locations. The MCW is measured on the basis of the grayscale profiles obtained along the lines perpendicular to the fitted mandible contour. One hundred DPRs, including 26 DPRs from osteoporotic cases, were used to evaluate our proposed scheme. ResultsExperimental results showed that the average MCWs for osteoporotic and control cases were 2.2 and 3.9mm, respectively. When a threshold of 2.7mm was applied, the sensitivity and specificity for identifying osteoporotic patients were 88.5 and 97.3%, respectively. ConclusionAn automated MCW measurement technique is feasible using DPRs, and this method has a potential to identify asymptomatic osteoporotic patients. CARS, 2012 Osteoporosis nationallicence Dental panoramic radiography nationallicence Computer-aided diagnosis nationallicence Mandibular cortical width nationallicence Active contour model nationallicence Muramatsu Chisako Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut Matsumoto Takuya Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut Hayashi Tatsuro Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut Hara Takeshi Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut Katsumata Akitoshi Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut Zhou Xiangrong Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut Iida Yukihiro Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut Matsuoka Masato Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut Wakisaka Takashi Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut Fujita Hiroshi Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/6(2013-11-01), 877-885 1861-6410 8:6<877 2013 8 11548 https://doi.org/10.1007/s11548-012-0800-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-012-0800-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Muramatsu Chisako Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 700 1- Matsumoto Takuya Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 700 1- Hayashi Tatsuro Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 700 1- Hara Takeshi Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 700 1- Katsumata Akitoshi Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut NATIONALLICENCE 700 1- Zhou Xiangrong Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 700 1- Iida Yukihiro Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut NATIONALLICENCE 700 1- Matsuoka Masato Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut NATIONALLICENCE 700 1- Wakisaka Takashi Department of Oral Radiology, School of Dentistry, Asahi University, 1851 Hozumi, 501-0296, Mizuho, Gifu, Japan aut NATIONALLICENCE 700 1- Fujita Hiroshi Department of Intelligent Image Information, Graduate School of Medicine, Gifu University, 1-1 Yanagido, 501-1194, Gifu, Japan aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/6(2013-11-01), 877-885 1861-6410 8:6<877 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer