Volumetric quantification of airway wall in CT via collision-free active surface model: application to asthma assessment

Catalin Fetita; Margarete Ortner; Pierre-Yves Brillet; Francoise Preteux; Philippe A Grenier

doi:10.1109/TMI.2014.2316115

Volumetric quantification of airway wall in CT via collision-free active surface model: application to asthma assessment

Catalin Fetita ^{1, 2} Margarete Ortner ^{1, 2} Pierre-Yves Brillet ³ Francoise Preteux ⁴ Philippe A Grenier ⁵

1 ARTEMIS - Département Advanced Research And Techniques For Multidimensional Imaging Systems

2 MAP5 - UMR 8145 - Mathématiques Appliquées Paris 5

3 H&P - Hypoxie et Poumon : pneumopathologies fibrosantes, modulations ventilatoires et circulatoires

4 CAOR - Centre de Robotique

5 LIF - Laboratoire d'imagerie fonctionnelle [Paris]

Abstract : Emerging idea in asthma phenotyping, incorporating local morphometric information on the airway wall thickness would be able to better account for the process of airway remodeling as indicator of pathology or therapeutic impact. It is thus important that such information be provided uniformly along the airway tree, not on a sparse (cross-section) sampling basis. The volumetric segmentation of the airway wall from CT data is the issue addressed in this paper by exploiting a patient-specific surface active model. An original aspect taken into account in the proposed deformable model is the management of auto-collisions for this complex morphology. The analysis of several solutions ended up with the design of a motion vector field specific to the patient geometry to guide the deformation. The segmentation result, presented as two embedded inner/outer surfaces of the wall, allows the quantification of the tissue thickness based on a locally-defined measure sensitive to even small surface irregularities. The method is validated with respect to several ground truth simulations of pulmonary CT data with different airway geometries and acquisition protocols showing accuracy within the CT resolution range. Results from an ongoing clinical study on moderate and severe asthma are presented and discussed.

Keywords : Asthma Airway wall Patient-specific analysis Three-dimensional (3-D) segmentation Collision-free active surface model

Document type :

Journal articles

Domain :

Engineering Sciences [physics] / Signal and Image processing

Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01103752
Contributor : Catalin Fetita <>
Submitted on : Thursday, January 15, 2015 - 12:48:10 PM
Last modification on : Thursday, April 11, 2019 - 4:02:09 PM

Volumetric quantification of airway wall in CT via collision-free active surface model: application to asthma assessment

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Volumetric quantification of airway wall in CT via collision-free active surface model: application to asthma assessment

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