Real bronchoscopic images-based bronchial nomenclature: a preliminary study

Cheng Wang; Yuichiro Hayashi; Masahiro Oda; Takayuki Kitasaka; Hirotsugu Takabatake; Masaki Mori; Hirotoshi Honma; Hiroshi Natori; Kensaku Mori

doi:10.1117/12.2654508

3 April 2023 Real bronchoscopic images-based bronchial nomenclature: a preliminary study

Cheng Wang, Yuichiro Hayashi, Masahiro Oda, Takayuki Kitasaka, Hirotsugu Takabatake, Masaki Mori, Hirotoshi Honma, Hiroshi Natori, Kensaku Mori

Author Affiliations +

Proceedings Volume 12466, Medical Imaging 2023: Image-Guided Procedures, Robotic Interventions, and Modeling; 1246603 (2023) https://doi.org/10.1117/12.2654508
Event: SPIE Medical Imaging, 2023, San Diego, California, United States

Abstract

This article describes a method for bronchial nomenclature using real bronchoscopic (RB) images and pre-built knowledge base of branches. The bronchus has a complex tree-like structure, which increases the difficulty of bronchoscopy. Therefore, a bronchoscopic navigation system is used to help physicians during examination. Conventional navigation system used preoperative CT images and real bronchoscopic images to obtain the camera pose for navigation, whose accuracy is influenced by organ deformation. We propose a bronchial nomenclature method to estimate branch names for bronchoscopic navigation. This method consists of a bronchus knowledge base construction model, a camera motion estimation module, an anatomical structure tracking module, and a branch name estimation module. The knowledge base construction module is used to find the relationship of each branch. The anatomical tracking module is used to track the bronchial orifice (BO) extracted in each RB frame. The camera motion estimation module is used to estimate the camera motion between two frames. The branch name estimation module uses the pre-built bronchus knowledge base and BO tracking results to find the name of each branch. Experimental results showed that it is possible to estimate branch names using only RB images and the pre-built knowledge base of branches.

Conference Presentation

Citation Download Citation

Cheng Wang, Yuichiro Hayashi, Masahiro Oda, Takayuki Kitasaka, Hirotsugu Takabatake, Masaki Mori, Hirotoshi Honma, Hiroshi Natori, and Kensaku Mori "Real bronchoscopic images-based bronchial nomenclature: a preliminary study", Proc. SPIE 12466, Medical Imaging 2023: Image-Guided Procedures, Robotic Interventions, and Modeling, 1246603 (3 April 2023); https://doi.org/10.1117/12.2654508

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