Browsing Faculté de médecine by Affiliation "Université de Montréal. Faculté de médecine. Département de chirurgie"
Now showing items 1-20 of 31
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3D registration of MR and X-ray spine images using an articulated model
(2012-07)Présentation: Cet article a été publié dans le journal : Computerised medical imaging and graphics (CMIG). Le but de cet article est de recaler les vertèbres extraites à partir d’images RM avec des vertèbres extraites à partir d’images RX pour des ... -
Analysis of scoliosis trunk deformities using ICA
(2012-07-02)This paper describes a method for analyzing scoliosis trunk deformities using Independent Component Analysis (ICA). Our hypothesis is that ICA can capture the scoliosis deformities visible on the trunk. Unlike Principal Component Analysis (PCA), ICA ... -
Articulated Model Registration of MRI/X-Ray Spine Data
(Springer Berlin Heidelberg, 2010-06)This paper presents a method based on articulated models for the registration of spine data extracted from multimodal medical images of patients with scoliosis. With the ultimate aim being the development of a complete geometrical model of the torso ... -
Changes in Trunk Appearance After Scoliosis Spinal Surgery and Their Relation to Changes in Spinal Measurements
(2015-11-01)Study Design Retrospective study of surgical outcome. Objectives To evaluate quantitatively the changes in trunk surface deformities after scoliosis spinal surgery in Lenke 1A adolescent idiopathic scoliosis (AIS) patients and to compare it ... -
Clinical methods for quantifying body segment posture: a literature review
(Taylor and Francis Group, 2011-07-30)Purpose. Clinicians commonly assess posture in persons with musculoskeletal disorders and tend to do so subjectively. Evidence-based practice requires the use of valid, reliable and sensitive tools to monitor treatment effectiveness. The purpose of ... -
Differences in Standing and Sitting Postures of Youth with Idiopathic Scoliosis from Quantitative Analysis of Digital Photographs
(Taylor & Francis, 2013-01-08)The objective of this study was to explore whether differences in standing and sitting postures of youth with idiopathic scoliosis could be detected from quantitative analysis of digital photographs. Standing and sitting postures of 50 participants ... -
The effectiveness of scoliosis screening programs: methods for systematic review and expert panel recommendations formulation
(2013-07-24)Background: Literature on scoliosis screening is vast, however because of the observational nature of available data and methodological flaws, data interpretation is often complex, leading to incomplete and sometimes, somewhat misleading conclusions. ... -
Evaluation of Reducibility of Trunk Asymmetry in Lateral Bending
(IOS Press, 2009)The value of the lateral bending test is important in the assessment of spinal curve mobility and prediction of surgical outcome in the treatment of adolescent idiopathic scoliosis (AIS). However, radiographic bending tests are unable to assess the ... -
Is Breast Asymmetry Present in Girls with Adolescent Idiopathic Scoliosis?
(2014-09)Study Design Cross-sectional descriptive study. Objectives To characterize breast asymmetry (BA), as defined by breast volume difference, in girls with significant adolescent idiopathic scoliosis (AIS), using magnetic resonance imaging (MRI). Summary ... -
Modified Large Margin Nearest Neighbor Metric Learning for Regression
(IEEE, 2014-03)The main objective of this letter is to formulate a new approach of learning a Mahalanobis distance metric for nearest neighbor regression from a training sample set. We propose a modified version of the large margin nearest neighbor metric learning ... -
Multilevel Analysis of Trunk Surface Measurements for Noninvasive Assessment of Scoliosis Deformities
(2012-08-01)Study Design. Reliability study. Objectives. To assess between-acquisition reliability of new multilevel trunk cross sections measurements, in order to define what is a real change when comparing 2 trunk surface acquisitions of a same patient, before ... -
Multimodal image fusion of anatomical structures for diagnosis, therapy planning and assistance
(IEEE, 2013-05-12)This paper provides an overview of work done in recent years by our research group to fuse multimodal images of the trunk of patients with Adolescent Idiopathic Scoliosis (AIS) treated at Sainte-Justine University Hospital Center (CHU). We first describe ... -
Multimodal image registration of the scoliotic torso for surgical planning
(2013-12)Background This paper presents a method that registers MRIs acquired in prone position, with surface topography (TP) and X-ray reconstructions acquired in standing position, in order to obtain a 3D representation of a human torso incorporating the ... -
Non invasive classification system of scoliosis curve types using least-squares support vector machines
(Elsevier, 2012-10-01)Objective To determine scoliosis curve types using non invasive surface acquisition, without prior knowledge from X-ray data. Methods Classification of scoliosis deformities according to curve type is used in the clinical management of scoliotic ... -
Non-invasive quantitative assessment of scoliosis spinal surgery outcome
(2013-03-29)Improving the appearance of the trunk is an important goal of scoliosis surgical treatment, mainly in patients' eyes. Unfortunately, existing methods for assessing postoperative trunk appearance are rather subjective as they rely on a qualitative ... -
Noninvasive Clinical Assessment of Trunk Deformities Associated With Scoliosis
(2013-03-07)Besides the spinal deformity, scoliosis modifies notably the general appearance of the trunk resulting in trunk rotation, imbalance, and asymmetries that constitutes patients' major concern. Existing classifications of scoliosis, based on the type of ... -
A novel method for the 3-D reconstruction of scoliotic ribs from frontal and lateral radiographs
(2009-09-29)Among the external manifestations of scoliosis, the rib hump, which is associated with the ribs' deformities and rotations, constitutes the most disturbing aspect of the scoliotic deformity for patients. A personalized 3-D model of the rib cage is ... -
Patient-specific anisotropic model of human trunk based on MR data
(2015-01-09)There are many ways to generate geometrical models for numerical simulation, and most of them start with a segmentation step to extract the boundaries of the regions of interest. This paper presents an algorithm to generate a patient-specific ... -
Patient-specific model of a scoliotic torso for surgical planning
(2013-03)A method for the construction of a patient-specific model of a scoliotic torso for surgical planning via inter- patient registration is presented. Magnetic Resonance Images (MRI) of a generic model are registered to surface topography (TP) and X-ray ... -
Personalized 3D reconstruction of the rib cage for clinical assessment of trunk deformities
(2013-11-01)Scoliosis is a 3D deformity of the spine and rib cage. Extensive validation of 3D reconstruction methods of the spine from biplanar radiography has already been published. In this article, we propose a novel method to reconstruct the rib cage, using ...
