title: Classification of diffuse lung disease patterns on high-resolution computed tomography by a bag of words approach.
abstract: Visual inspection of diffuse lung disease (DLD) patterns on high-resolution computed tomography (HRCT) is difficult because of their high complexity. We proposed a bag of words based method on the classification of these textural patters in order to improve the detection and diagnosis of DLD for radiologists. Six kinds of typical pulmonary patterns were considered in this work. They were consolidation, ground-glass opacity, honeycombing, emphysema, nodular and normal tissue. Because they were characterized by both CT values and shapes, we proposed a set of statistical measure based local features calculated from both CT values and the eigen-values of Hessian matrices. The proposed method could achieve the recognition rate of 95.85%, which was higher comparing with one global feature based method and two other CT values based bag of words methods.
authors: Applied Medical Engineering Science, Graduate School of Medicine, Yamaguchi University, Ube, Japan. xurui@yamaguchi-u.ac.jp
authors: Rui
authors: R
authors: Xu
authors: Yasushi
authors: Y
authors: Hirano
authors: Rie
authors: R
authors: Tachibana
authors: Shoji
authors: S
authors: Kido
mesh_terms: D000465:Algorithms; D003936:Diagnosis, Computer-Assisted; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007802:Language; D008171:Lung Diseases / Q000145:classification / Q000175:diagnosis*; D008495:Medical Oncology / Q000379:methods; D016011:Normal Distribution; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D011871:Radiology / Q000379:methods*; D015203:Reproducibility of Results; D014057:Tomography, X-Ray Computed / Q000379:methods