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Author
Debora Gil; Sergio Vera; Agnes Borras; Albert Andaluz; Miguel Angel Gonzalez Ballester
Title
Anatomical Medial Surfaces with Efficient Resolution of Branches Singularities
Type
Journal Article
Year
2017
Publication
Medical Image Analysis
Abbreviated Journal
MIA
Volume
35
Issue
Pages
390-402
Keywords
Medial Representations; Shape Recognition; Medial Branching Stability ; Singular Points
Abstract
Medial surfaces are powerful tools for shape description, but their use has been limited due to the sensibility existing methods to branching artifacts. Medial branching artifacts are associated to perturbations of the object boundary rather than to geometric features. Such instability is a main obstacle for a condent application in shape recognition and description. Medial branches correspond to singularities of the medial surface and, thus, they are problematic for existing morphological and energy-based algorithms. In this paper, we use algebraic geometry concepts in an energy-based approach to compute a medial surface presenting a stable branching topology. We also present an ecient GPU-CPU implementation using standard image processing tools. We show the method computational eciency and quality on a custom made synthetic database. Finally, we present some results on a medical imaging application for localization of abdominal pathologies.
Address
Corporate Author
Thesis
Publisher
Elsevier B.V.
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
IAM; 600.060; 600.096; 600.075; 600.145
Approved
no
Call Number
Admin @ si @ GVB2017
Serial
2775
Permanent link to this record
Author
Debora Gil; Agnes Borras; Sergio Vera; Miguel Angel Gonzalez Ballester
Title
A Validation Benchmark for Assessment of Medial Surface Quality for Medical Applications
Type
Conference Article
Year
2013
Publication
9th International Conference on Computer Vision Systems
Abbreviated Journal
Volume
7963
Issue
Pages
334-343
Keywords
Medial Surfaces; Shape Representation; Medical Applications; Performance Evaluation
Abstract
Confident use of medial surfaces in medical decision support systems requires evaluating their quality for detecting pathological deformations and describing anatomical volumes. Validation in the medical imaging field is a challenging task mainly due to the difficulties for getting consensual ground truth. In this paper we propose a validation benchmark for assessing medial surfaces in the context of medical applications. Our benchmark includes a home-made database of synthetic medial surfaces and volumes and specific scores for evaluating surface accuracy, its stability against volume deformations and its capabilities for accurate reconstruction of anatomical volumes.
Address
Sant Petersburg; Russia; July 2013
Corporate Author
Thesis
Publisher
Springer Berlin Heidelberg
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
LNCS
Series Volume
Series Issue
Edition
ISSN
0302-9743
ISBN
978-3-642-39401-0
Medium
Area
Expedition
Conference
ICVS
Notes
IAM; 600.044; 600.060
Approved
no
Call Number
Admin @ si @ GBV2013
Serial
2300
Permanent link to this record
Author
Carles Sanchez; Antonio Esteban Lansaque; Agnes Borras; Marta Diez-Ferrer; Antoni Rosell; Debora Gil
Title
Towards a Videobronchoscopy Localization System from Airway Centre Tracking
Type
Conference Article
Year
2017
Publication
12th International Conference on Computer Vision Theory and Applications
Abbreviated Journal
Volume
Issue
Pages
352-359
Keywords
Video-bronchoscopy; Lung cancer diagnosis; Airway lumen detection; Region tracking; Guided bronchoscopy navigation
Abstract
Bronchoscopists use fluoroscopy to guide flexible bronchoscopy to the lesion to be biopsied without any kind of incision. Being fluoroscopy an imaging technique based on X-rays, the risk of developmental problems and cancer is increased in those subjects exposed to its application, so minimizing radiation is crucial. Alternative guiding systems such as electromagnetic navigation require specific equipment, increase the cost of the clinical procedure and still require fluoroscopy. In this paper we propose an image based guiding system based on the extraction of airway centres from intra-operative videos. Such anatomical landmarks are matched to the airway centreline extracted from a pre-planned CT to indicate the best path to the nodule. We present a
feasibility study of our navigation system using simulated bronchoscopic videos and a multi-expert validation of landmarks extraction in 3 intra-operative ultrathin explorations.
Address
Porto; Portugal; February 2017
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
VISAPP
Notes
IAM; 600.096; 600.075; 600.145
Approved
no
Call Number
Admin @ si @ SEB2017
Serial
2943
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