title: Automated anatomical labeling of bronchial branches extracted from CT datasets based on machine learning and combination optimization and its application to bronchoscope guidance.
abstract: This paper presents a method for the automated anatomical labeling of bronchial branches extracted from 3D CT images based on machine learning and combination optimization. We also show applications of anatomical labeling on a bronchoscopy guidance system. This paper performs automated labeling by using machine learning and combination optimization. The actual procedure consists of four steps: (a) extraction of tree structures of the bronchus regions extracted from CT images, (b) construction of AdaBoost classifiers, (c) computation of candidate names for all branches by using the classifiers, (d) selection of best combination of anatomical names. We applied the proposed method to 90 cases of 3D CT datasets. The experimental results showed that the proposed method can assign correct anatomical names to 86.9% of the bronchial branches up to the sub-segmental lobe branches. Also, we overlaid the anatomical names of bronchial branches on real bronchoscopic views to guide real bronchoscopy.
authors.affiliation: Graduate School of Information Science, Nagoya University. kensaku@is.nagoya-u.ac.jp
authors.forename: Kensaku
authors.initials: K
authors.lastname: Mori
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Ota
authors.forename: Daisuke
authors.initials: D
authors.lastname: Deguchi
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kitasaka
authors.forename: Yasuhito
authors.initials: Y
authors.lastname: Suenaga
authors.forename: Shingo
authors.initials: S
authors.lastname: Iwano
authors.forename: Yosihnori
authors.initials: Y
authors.lastname: Hasegawa
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Takabatake
authors.forename: Masaki
authors.initials: M
authors.lastname: Mori
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Natori
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D001995:Bronchography / Q000379:methods*; D001999:Bronchoscopy / Q000379:methods*; D006801:Humans; D010363:Pattern Recognition, Automated / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*