TY  - CONF
AU  - Carles Sanchez
AU  - Jorge Bernal
AU  - F. Javier Sanchez
AU  - Marta Diez-Ferrer
AU  - Antoni Rosell
AU  - Debora Gil
A2  - IPCAI
PY  - 2015//
TI  - Towards On-line Quantification of Tracheal Stenosis from Videobronchoscopy
BT  - 6th International Conference on Information Processing in Computer-Assisted Interventions IPCAI2015
SP  - 935
EP  - 945
VL  - 10
IS  - 6
N2  - PURPOSE:Lack of objective measurement of tracheal obstruction degree has a negative impact on the chosen treatment prone to lead to unnecessary repeated explorations and other scanners. Accurate computation of tracheal stenosis in videobronchoscopy would constitute a breakthrough for this noninvasive technique and a reduction in operation cost for the public health service.METHODS:Stenosis calculation is based on the comparison of the region delimited by the lumen in an obstructed frame and the region delimited by the first visible ring in a healthy frame. We propose a parametric strategy for the extraction of lumen and tracheal ring regions based on models of their geometry and appearance that guide a deformable model. To ensure a systematic applicability, we present a statistical framework to choose optimal parametric values and a strategy to choose the frames that minimize the impact of scope optical distortion.RESULTS:Our method has been tested in 40 cases covering different stenosed tracheas. Experiments report a non- clinically relevant [Formula: see text] of discrepancy in the calculated stenotic area and a computational time allowing online implementation in the operating room.CONCLUSIONS:Our methodology allows reliable measurements of airway narrowing in the operating room. To fully assess its clinical impact, a prospective clinical trial should be done.
N1  - IAM; MV; 600.075
ID  - Carles Sanchez2015
ER  -