An automatically generated texture-based atlas of the lungs

Dicente Cid, Yashin (University of Applied Sciences and Arts Western Switzerland (HES-SO Valais-Wallis); University of Geneva, Switzerland) ; Puonti, Oula (Technical University of Denmark, Kgs. Lyngby, Denmark; Copenhagen University Hospital Hvidovre, Denmark) ; Platon, Alexandra (Geneva University Hospitals (HUG), Switzerland) ; Van Leemput, Koen (Technical University of Denmark, Kgs. Lyngby, Denmark;Massachusetts General Hospital, Harvard Medical School, Charlestown, USA) ; Müller, Henning (University of Applied Sciences and Arts Western Switzerland (HES-SO Valais-Wallis); University of Geneva, Switzerland) ; Poletti, Pierre-Alexandre (Geneva University Hospitals (HUG), Switzerland)

Many pulmonary diseases can be characterized by visual abnormalities on lung CT scans. Some diseases manifest similar defects but require completely di_erent treatments, as is the case for Pulmonary Hypertension (PH) and Pulmonary Embolism (PE): both present hypo- and hyper-perfused regions but with di_erent distribution across the lung and require di_erent treatment protocols. Finding these distributions by visual inspection is not trivial even for trained radiologists who currently use invasive catheterism to diagnose PH. A Computer-Aided Diagnosis (CAD) tool that could facilitate the non-invasive diagnosis of these diseases can bene_t both the radiologists and the patients. Most of the visual di_erences in the parenchyma can be characterized using texture descriptors. Current CAD systems often use texture information but the texture is either computed in a patch-based fashion, or based on an anatomical division of the lung. The di_culty of precisely _nding these divisions in abnormal lungs calls for new tools for obtaining new meaningful divisions of the lungs. In this paper we present a method for unsupervised segmentation of lung CT scans into subregions that are similar in terms of texture and spatial proximity. To this extent, we combine a previously validated Riesz-wavelet texture descriptor with a well-known superpixel segmentation approach that we extend to 3D. We demonstrate the feasibility and accuracy of our approach on a simulated texture dataset, and show preliminary results for CT scans of the lung comparing subjects su_ering either from PH or PE. The resulting texture-based atlas of individual lungs can potentially help physicians in diagnosis or be used for studying common texture distributions related to other diseases.


Keywords:
Conference Type:
full paper
Faculty:
Economie et Services
School:
HEG-VS
Institute:
Institut Informatique de gestion
Subject(s):
Informatique
Publisher:
Houston, USA, 10–15 February 2018
Date:
2018-04
Houston, USA
10–15 February 2018
Pagination:
9 p.
Published in:
Proceedings of the Medical Imaging 2018: Computer-Aided Diagnosis
Numeration (vol. no.):
Vol. 10575
DOI:
ISBN:
9781510616394
Appears in Collection:



 Record created 2018-11-12, last modified 2019-06-11

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