IMPROVING THE DETECTION OF OSTEOPOROSIS FROM DENTAL RADIOGRAPHS USING ACTIVE APPEARANCE MODELS

被引：13
|
作者：
Roberts, M. G. [1 ]
Graham, J. [1 ]
Devlin, H. [2 ]
机构：
[1] Univ Manchester, Sch Canc & Enabling Sci, Imaging Sci & Biomed Engn, Manchester M13 9PL, Lancs, England
[2] Univ Manchester, Sch Dent, Manchester M13 9PL, Lancs, England
来源：
2010 7TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING: FROM NANO TO MACRO | 2010年
关键词：
Osteoporosis; Dental Radiographs; Active Appearance Model; Active Shape Model; Image Segmentation;
D O I：
10.1109/ISBI.2010.5490314
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We describe improvements to a method of detecting patients at risk of osteoporosis from automatic measurement of the inferior mandibular cortex on panoramic dental tomograms. Previous work had used an Active Shape Model (ASM) to locate the mandibular edges. However, the edge-based ASM has little lateral positioning information and in osteoporotic cases the superior border is often poorly defined. These problems can degrade the accuracy of the measurements of cortical width. We have obtained superior accuracy using an Active Appearance Model incorporating a complex texture model derived from an osteoporotic-enriched training set. This leads to improvements in diagnostic accuracy, when applied to a large dataset of 663 subjects with known Bone Mineral Density.
引用
收藏
页码：440 / 443
页数：4
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