title: AIRWAY LABELING USING A HIDDEN MARKOV TREE MODEL.
abstract: We present a novel airway labeling algorithm based on a Hidden Markov Tree Model (HMTM). We obtain a collection of discrete points along the segmented airway tree using particles sampling [1] and establish topology using Kruskal's minimum spanning tree algorithm. Following this, our HMTM algorithm probabilistically assigns labels to each point. While alternative methods label airway branches out to the segmental level, we describe a general method and demonstrate its performance out to the subsubsegmental level (two generations further than previously published approaches). We present results on a collection of 25 computed tomography (CT) datasets taken from a Chronic Obstructive Pulmonary Disease (COPD) study.
authors.affiliation: Channing Laboratory, Brigham and Women's Hospital, Boston, MA ; Surgical Planning Lab, Brigham and Women's Hospital, Boston, MA ; Laboratory of Mathematics in Imaging, Brigham and Women's Hospital, Boston, MA.
authors.forename: James C
authors.initials: JC
authors.lastname: Ross
authors.affiliation: Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, MA.
authors.forename: Alejandro A
authors.initials: AA
authors.lastname: Díaz
authors.affiliation: Department of Radiology, Brigham and Women's Hospital, Boston, MA.
authors.forename: Yuka
authors.initials: Y
authors.lastname: Okajima
authors.affiliation: Surgical Planning Lab, Brigham and Women's Hospital, Boston, MA.
authors.forename: Demian
authors.initials: D
authors.lastname: Wassermann
authors.affiliation: Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, MA.
authors.forename: George R
authors.initials: GR
authors.lastname: Washko
authors.affiliation: ECE Department, Northeastern University, Boston, MA.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Dy
authors.affiliation: Surgical Planning Lab, Brigham and Women's Hospital, Boston, MA ; Laboratory of Mathematics in Imaging, Brigham and Women's Hospital, Boston, MA ; Department of Radiology, Brigham and Women's Hospital, Boston, MA.
authors.forename: Raúl
authors.initials: R
authors.lastname: San José Estépar