A5008524238- Medical Imaging and Analysis
- Scoliosis diagnosis and treatment
- Total Knee Arthroplasty Outcomes
- Spinal Fractures and Fixation Techniques
- Lower Extremity Biomechanics and Pathologies
- Knee injuries and reconstruction techniques
- Spine and Intervertebral Disc Pathology
- Medical Image Segmentation Techniques
- Advanced X-ray and CT Imaging
- Osteoarthritis Treatment and Mechanisms
- Shoulder Injury and Treatment
- Musculoskeletal pain and rehabilitation
- Medical Imaging Techniques and Applications
- Orthopedic Surgery and Rehabilitation
- Anatomy and Medical Technology
- Orthopaedic implants and arthroplasty
- Pelvic and Acetabular Injuries
- Stroke Rehabilitation and Recovery
- 3D Shape Modeling and Analysis
- Sports injuries and prevention
- Muscle activation and electromyography studies
- Radiomics and Machine Learning in Medical Imaging
- Infrared Thermography in Medicine
- Diabetic Foot Ulcer Assessment and Management
- Hip disorders and treatments
Saveetha University
2025
Sri Lanka Institute of Information Technology
2024
Université de Montréal
2009-2023
École de Technologie Supérieure
2014-2023
Centre Hospitalier de l’Université de Montréal
2011-2023
Université du Québec à Montréal
1995-2021
Centre Hospitalier Universitaire Sainte-Justine
1998-2019
Canadian Institutes of Health Research
2019
Centre for Interdisciplinary Research in Rehabilitation
2016-2017
Hôpital Notre-Dame
2004-2016
This study had two objectives: 1) to establish magnetic resonance imaging (MRI) as a tool for measuring total and regional adipose tissue (AT) distribution in humans 2) assess the relationship between selected anthropometric variables MRI-measured AT. Twenty-seven healthy men varying age [40.8 +/- 14.5 (SD) yr], body mass index (28.5 4.8), waist-to-hip ratio (WHR, 0.96 0.07) participated study. Total AT volume was determined using linear interpolation of areas obtained on consecutive slices...
In clinical routine, lower limb analysis relies on conventional X-ray (2D view) or computerised tomography (CT) Scan (lying position). However, these methods do not allow 3D in standing position. The aim of this study is to propose a fast and accurate 3D-reconstruction-method based parametric models statistical inferences from biplanar X-rays with measurements' (CM) assessment position for routine use. For the reproducibility study, 95% CI was under 2.7° all limbs' angular measurements...
We have developed a method to study the statistical properties of noise found in various medical images. The is specifically designed for types with uncorrelated fluctuations. Such signal fluctuations generally originate physical processes imaging rather than tissue textures. Various (e.g., photon, electronics, and quantization) often contribute degrade images; overall assumed be additive zero-mean, constant-variance Gaussian distribution. However, analysis suggests that variance could...
Abstract Objective To evaluate the change in osteoarthritic (OA) knee cartilage volume over a two‐year period with use of magnetic resonance imaging (MRI) and to correlate MRI changes radiologic changes. Methods Thirty‐two patients symptomatic OA underwent at baseline 6, 12, 18, 24 months. Loss volumes were computed contrasted clinical variables for standardized semiflexed radiographs 1 2 years. Results Progression loss all followup points was statistically significant ( P < 0.0001), mean...
Study Design. A retrospective study investigated the sagittal alignment in adolescent idiopathic scoliosis (AIS). Objective. To evaluate of spine and pelvis on basis curve type. Summary Background Data. The relation between highly influences balance adults. However, is poorly defined literature. Methods. Five parameters were evaluated lateral radiographs 160 patients with scoliosis: thoracic kyphosis, lumbar lordosis, sacral slope, pelvic tilt, incidence. classified according to their...
OBJECTIVE This study determined the effects of insulin versus liraglutide therapy on liver fat in patients with type 2 diabetes inadequately controlled oral agents therapy, including metformin. RESEARCH DESIGN AND METHODS Thirty-five metformin monotherapy or combination other antidiabetic medications were randomized to receive glargine for 12 weeks. The proton density fraction (PDFF) was measured by MRS. mean PDFF, total volume, and index MRI. Student t test, Fisher exact repeated-measures...
In Brief Study Design. This is a prospective case-control study. Objective. The objective of this study was to compare 3-dimensional (3D) morphological parameters the spine at first visit between nonprogressive (NP) and progressive (P) group immature adolescent idiopathic scoliosis (AIS). Summary Background Data. Prediction curve progression remains challenging in AIS visit. based on type, magnitude, skeletal or chronological age. Methods. A cohort 133 followed from immaturity maturity...
This paper presents an in vivo validation of a method for the three-dimensional (3-D) high-resolution modeling human spine, rib cage, and pelvis study spinal deformities. The uses adaptation standard close-range photogrammetry called direct linear transformation to reconstruct 3-D coordinates anatomical landmarks from three radiographic images subject's trunk. It then deforms 1-mm-resolution primitives (reference bones) obtained by serial computed tomography-scan reconstruction dry specimen....
Study Design We evaluated a computer-assisted surgical tool for inserting pedicle screws. Objectives This study reviewed the feasibility, usefulness, and accuracy of proposed tool. Summary background Data Reviews documented neurovascular damage caused by screw misplacement. Currently, hole position is assessed radiologic means curette palpation. Methods Three sheep vertebrae one artificial object were reconstructed three-dimensionally from computed tomography scan slices. At surgery,...
The primary purpose of this study was to investigate the viability magnetic resonance imaging (MRI) as a means measuring body composition rodents. To do so we compared adipose tissue (AT) volumes measured by MRI with those obtained X-ray computerized tomography (CT) in group rats (n = 17) varying weight (465-815 g) and percent fat (5.4-31.1%), latter determined chemical analysis. For both CT, AT (cm3) per transverse slice (3-mm thickness, 21-mm centers) were using computer-based image...
A three-dimensional (3D) reconstruction algorithm based on contours identification from biplanar radiographs is presented. It requires, as technical prerequisites, a method to calibrate the radiographic environment and surface generic object (anatomic atlas model) representing structure be reconstructed. The steps consist of: definition of anatomical regions, 2D associated these calculation 3D projection onto radiographs, associations between points X-rays projected contours, optimization...
The primary objective of this study was to develop a computer-aided method for the quantification three-dimensional (3-D) cartilage changes over time in knees with osteoarthritis (OA). We introduced local coordinate system (LCS) femoral and tibial boundaries that provides standardized representation geometry, thickness, volume. LCS can be registered different data sets from same patient so results directly compared. Cartilage are segmented 3-D magnetic resonance (MR) slices semi-automated...
In Brief Study Design. Comparative study of sagittal spino-pelvic alignment in children and adolescents with developmental lumbosacral spondylolisthesis compared asymptomatic subjects. Objective. To develop a global postural model alignment. Summary Background Data. The relationships between parameters are still unclear. Methods. Radiographs 120 control subjects 131 (91 low-grade, 40 high-grade) were reviewed. Subjects high-grade divided according to their sacro-pelvic alignment: balanced...
The purpose of this paper is to describe a semiautomated segmentation method for the liver and evaluate its performance on CT-scan MR images.First, an approximate 3-D model initialized from few user-generated contours globally outline shape. then automatically deformed by Laplacian mesh optimization scheme until it precisely delineates patient's liver. A correction tool was implemented allow user improve satisfaction.The proposed tested against 30 CT-scans SLIVER07 challenge repository 20...