title: Fibrous Dysplasia Characterization Using Lacunarity Analysis.
abstract: Fibrous dysplasia (FD) is a developmental anomaly in which the normal medullary space of the affected bone is replaced by fibro-osseous tissue. This condition is typically encountered in adolescents and young adults. It affects the maxillofacial region and it can often cause severe deformity and asymmetry. Therefore, accurate diagnosis is critical to determine the appropriate treatment of each case. In this sense, computed tomography (CT) is a relevant resource among the imaging techniques for correct diagnosis of this condition. Thus, in this paper, we propose to analyze fibrous dysplasia through its texture pattern. To accomplish this task, we propose to use lacunarity analysis, a multiscale method for describing patterns of spatial dispersion. Results indicated lower lacunarity values for fibrous dysplasia in comparison to normal bone samples, an indication that their texture images are more homogeneous, and a high separability between the classes when using principal component analysis (PCA) and decision trees for statistical analysis.
authors: School of Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 2227-05508-000, São Paulo, SP, Brazil. mirnacordeiro@usp.br.
authors: Mirna S
authors: MS
authors: Cordeiro
authors: School of Computing, Federal University of Uberlândia, Av. João Naves de Ávila, 2121-38408-100, Uberlândia, MG, Brazil. arbackes@yahoo.com.br.
authors: André R
authors: AR
authors: Backes
authors: School of Dentistry, Federal University of Uberlândia, Rua Acre 928, 38402-022, Uberlândia, MG, Brazil. duriga@gmail.com.
authors: Antônio F Durighetto
authors: AF
authors: Júnior
authors: School of Medicine, Federal University of Uberlândia, Av Marcos Freitas Costa, 180-38400328, Uberlândia, MG, Brazil. medicos@clinicaclima.com.br.
authors: Elmar H G
authors: EH
authors: Gonçalves
authors: School of Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 2227-05508-000, São Paulo, SP, Brazil. jexolive@usp.br.
authors: Jefferson X
authors: JX
authors: de Oliveira
mesh_terms: D005147:Facial Bones / Q000000981:diagnostic imaging; D005260:Female; D005357:Fibrous Dysplasia of Bone / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging; D019767:Maxillofacial Abnormalities / Q000000981:diagnostic imaging*; D025341:Principal Component Analysis; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D036542:Tomography, Spiral Computed / Q000379:methods*
keywords: Computed tomography; Fibrous dysplasia; Lacunarity; Texture