نتایج جستجو برای: atlas

تعداد نتایج: 24983  

2009
W. Van Hecke C. Sage J. Sijbers S. Sunaert P. M. Parizel

Introduction: In recent years, voxel based analysis (VBA) studies have demonstrated the potential of diffusion tensor imaging (DTI) to detect white matter (WM) damage in patients with various neurological or psychiatric disorders. In VBA, all DTI data sets are transformed to an atlas or template, whereafter the diffusion measures of control subjects and patients are evaluated in each voxel. In ...

Journal: :Folia morphologica 2010
J Skrzat I Mróz J K Jaworek J Walocha

Occipitalization of the atlas is an osseous anomaly of the craniovertebral junction. The aim of this paper is to present an anatomical variant of the fused atlas with the occipital bone and discuss similar cases described in literature. The skull of an adult male analysed in this study belonged to the cranial collection of the Department of Anatomy of the Jagiellonian University, Medical Collag...

2017
Esther Dura Juan Domingo Guillermo Ayala Luis Marti-Bonmati E Goceri

BACKGROUND Anatomical atlases are 3D volumes or shapes representing an organ or structure of the human body. They contain either the prototypical shape of the object of interest together with other shapes representing its statistical variations (statistical atlas) or a probability map of belonging to the object (probabilistic atlas). Probabilistic atlases are mostly built with simple estimation...

Journal: :Annals of the rheumatic diseases 2000
Y Nagaosa M Mateus B Hassan P Lanyon M Doherty

OBJECTIVES To (a) develop an atlas of line drawings for the assessment and grading of narrowing and osteophyte (that is, changes of osteoarthritis) on knee radiographs, and (b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs. METHODS Normal joint space widths (grade 0) for the medial and lateral tibiofemo...

2014
Sophie Lancelot Roxane Roche Afifa Slimen Caroline Bouillot Elise Levigoureux Jean-Baptiste Langlois Luc Zimmer Nicolas Costes Jean-Claude Baron

INTRODUCTION Preclinical in vivo imaging requires precise and reproducible delineation of brain structures. Manual segmentation is time consuming and operator dependent. Automated segmentation as usually performed via single atlas registration fails to account for anatomo-physiological variability. We present, evaluate, and make available a multi-atlas approach for automatically segmenting rat ...

Journal: :Frontiers in Neuroinformatics 2007
Trine Hjornevik Trygve B. Leergaard Dmitri Darine Olve Moldestad Anders M. Dale Frode Willoch Jan G. Bjaalie

Tomographic neuroimaging techniques allow visualization of functionally and structurally specific signals in the mouse and rat brain. The interpretation of the image data relies on accurate determination of anatomical location, which is frequently obstructed by the lack of structural information in the data sets. Positron emission tomography (PET) generally yields images with low spatial resolu...

2011
Juan C. Linares Lahcen Taïqui Jesús Julio Camarero

An understanding of the interactions between climate change and forest structure on tree growth are needed for decision making in forest conservation and management. In this paper, we investigated the relative contribution of tree features and stand structure on Atlas cedar (Cedrus atlantica) radial growth in forests that have experienced heavy grazing and logging in the past. Dendrochronologic...

2006
Jian-Hua Luo

Atlas Journal versus Atlas Database: the accumulation of the issues of the Journal constitutes the body of the Database/Text-Book. TABLE OF CONTENTS Volume 8, Number 1, Jan-Mar 2004 Previous Issue / Next Issue Genes ATBF1 (AT-binding transcription factor 1) (16q22.3-q23.1). Nadine Van Roy, Frank Speleman. Atlas Genet Cytogenet Oncol Haematol 2004; 8 (1): 1-7. [Full Text] [PDF] URL : http://Atla...

2014
Carlos Platero María C. Tobar

An atlas-based segmentation approach is presented that combines low-level operations, an affine probabilistic atlas, and a multiatlas-based segmentation. The proposed combination provides highly accurate segmentation due to registrations and atlas selections based on the regions of interest (ROIs) and coarse segmentations. Our approach shares the following common elements between the probabilis...

Journal: :Journal of neurosurgery 2009
Eric Bardinet Manik Bhattacharjee Didier Dormont Bernard Pidoux Grégoire Malandain Michael Schüpbach Nicholas Ayache Philippe Cornu Yves Agid Jérôme Yelnik

OBJECT The localization of any given target in the brain has become a challenging issue because of the increased use of deep brain stimulation to treat Parkinson disease, dystonia, and nonmotor diseases (for example, Tourette syndrome, obsessive compulsive disorders, and depression). The aim of this study was to develop an automated method of adapting an atlas of the human basal ganglia to the ...

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