title: Multi-object segmentation framework using deformable models for medical imaging analysis.
abstract: Segmenting structures of interest in medical images is an important step in different tasks such as visualization, quantitative analysis, simulation, and image-guided surgery, among several other clinical applications. Numerous segmentation methods have been developed in the past three decades for extraction of anatomical or functional structures on medical imaging. Deformable models, which include the active contour models or snakes, are among the most popular methods for image segmentation combining several desirable features such as inherent connectivity and smoothness. Even though different approaches have been proposed and significant work has been dedicated to the improvement of such algorithms, there are still challenging research directions as the simultaneous extraction of multiple objects and the integration of individual techniques. This paper presents a novel open-source framework called deformable model array (DMA) for the segmentation of multiple and complex structures of interest in different imaging modalities. While most active contour algorithms can extract one region at a time, DMA allows integrating several deformable models to deal with multiple segmentation scenarios. Moreover, it is possible to consider any existing explicit deformable model formulation and even to incorporate new active contour methods, allowing to select a suitable combination in different conditions. The framework also introduces a control module that coordinates the cooperative evolution of the snakes and is able to solve interaction issues toward the segmentation goal. Thus, DMA can implement complex object and multi-object segmentations in both 2D and 3D using the contextual information derived from the model interaction. These are important features for several medical image analysis tasks in which different but related objects need to be simultaneously extracted. Experimental results on both computed tomography and magnetic resonance imaging show that the proposed framework has a wide range of applications especially in the presence of adjacent structures of interest or under intra-structure inhomogeneities giving excellent quantitative results.
authors.affiliation: CIFASIS, UNR-CONICET/UAM (France), Bv 27 de febrero 210 bis, Rosario, Argentina. namias@cifasis-conicet.gov.ar.
authors.forename: Rafael
authors.initials: R
authors.lastname: Namías
authors.affiliation: Consejo Nacional de Investigaciones Científicas y Técnicas and Instituto PLADEMA, Universidad Nacional del Centro, Tandil, Argentina.
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: D'Amato
authors.affiliation: Comisión de Investigaciones Científicas de la Prov. de Buenos Aires (CIC-PBA) and Instituto PLADEMA, Universidad Nacional del Centro, Tandil, Argentina.
authors.forename: Mariana
authors.initials: M
authors.lastname: Del Fresno
authors.affiliation: Comisión Nacional de Energía Atómica (CNEA) and Instituto PLADEMA, Universidad Nacional del Centro, Tandil, Argentina.
authors.forename: Marcelo
authors.initials: M
authors.lastname: Vénere
authors.affiliation: Digestive Surgery Department, Hôpital La Timone, Marseille, France.
authors.forename: Nicola
authors.initials: N
authors.lastname: Pirró
authors.affiliation: LSIS UMR CNRS 7296, Aix-Marseille University, Marseille, France.
authors.forename: Marc-Emmanuel
authors.initials: ME
authors.lastname: Bellemare
mesh_terms: D000465:Algorithms; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D003106:Colon / Q000000981:diagnostic imaging; D003113:Colonoscopy / Q000379:methods; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging; D013270:Stomach / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D001743:Urinary Bladder / Q000000981:diagnostic imaging; D014599:Uterus / Q000000981:diagnostic imaging
keywords: Collision control; Complex segmentation; Deformable models; Multi-object segmentation; Segmentation framework