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Comparing a Portable Motion Analysis System against the Gold Standard for Potential Anterior Cruciate Ligament Injury Prevention and Screening

Author(s): Karatzas N; Abdelnour P; Corban JPAH; Zhao KY; Veilleux LN; Bergeron SG; Fevens T; Rivaz H; Babouras A; Martineau PA; ...

Knee kinematics during a drop vertical jump, measured by the Kinect V2 (Microsoft, Redmond, WA, USA), have been shown to be associated with an increased risk of non-contact anterior cruciate ligame ...

Article GUID: 38544237


SCANED: Siamese collateral assessment network for evaluation of collaterals from ischemic damage

Author(s): Aktar M; Xiao Y; Tehrani AKZ; Tampieri D; Rivaz H; Kersten-Oertel M;

This study conducts collateral evaluation from ischemic damage using a deep learning-based Siamese network, addressing the challenges associated with a small and imbalanced dataset. The collateral network provides an alternative oxygen and nutrient supply p ...

Article GUID: 38364600


On the soft tissue ultrasound elastography using FEM based inversion approach

Author(s): Eshaghinia SS; Taghvaeipour A; Aghdam MM; Rivaz H;

Elastography is a medical imaging modality that enables visualization of tissue stiffness. It involves quasi-static or harmonic mechanical stimulation of the tissue to generate a displacement field which is used as input in an inversion algorithm to reconst ...

Article GUID: 38240143


Alternating direction method of multipliers for displacement estimation in ultrasound strain elastography

Author(s): Ashikuzzaman M; Peng B; Jiang J; Rivaz H;

Background: Ultrasound strain imaging, which delineates mechanical properties to detect tissue abnormalities, involves estimating the time delay between two radio-frequency (RF) frames collected before and after tissue deformation. The existing regularized ...

Article GUID: 38159299


Bayesian workflow for the investigation of hierarchical classification models from tau-PET and structural MRI data across the Alzheimer's disease spectrum

Author(s): Belasso CJ; Cai Z; Bezgin G; Pascoal T; Stevenson J; Rahmouni N; Tissot C; Lussier F; Rosa-Neto P; Soucy JP; Rivaz H; Benali H; ...

Background: Alzheimer's disease (AD) diagnosis in its early stages remains difficult with current diagnostic approaches. Though tau neurofibrillary tangles (NFTs) generally follow the stereotyp ...

Article GUID: 37920382


Using an Affordable Motion Capture System to Evaluate the Prognostic Value of Drop Vertical Jump Parameters for Noncontact ACL Injury

Author(s): Corban J; Karatzas N; Zhao KY; Babouras A; Bergeron S; Fevens T; Rivaz H; Martineau PA;

Background: Knee kinematic parameters during a drop vertical jump (DVJ) have been demonstrated to be associated with increased risk of noncontact anterior cruciate ligament (ACL) injury. However, standard motion analysis systems are not practical for routin ...

Article GUID: 36790216


Comparison of multifidus muscle intramuscular fat by ultrasound echo intensity and fat-water based MR images in individuals with chronic low back pain

Author(s): Crook J; Masi S; Naghdi N; Roussac A; Rye M; Rosenstein B; Rivaz H; Boily M; Weber MH; Fortin M; ...

Purpose: The aim of this observational cross-sectional study was to examine correlations of intramuscular fat content in lumbar multifidus (LM) by comparing muscle echo intensity (EI) and percent f ...

Article GUID: 36658047


Deep learning for collateral evaluation in ischemic stroke with imbalanced data

Author(s): Aktar M; Reyes J; Tampieri D; Rivaz H; Xiao Y; Kersten-Oertel M;

Purpose: Collateral evaluation is typically done using visual inspection of cerebral images and thus suffers from intra- and inter-rater variability. Large open databases of ischemic stroke patients are rare, limiting the use of deep learning methods in tre ...

Article GUID: 36635594


Robust landmark-based brain shift correction with a Siamese neural network in ultrasound-guided brain tumor resection

Author(s): Pirhadi A; Salari S; Ahmad MO; Rivaz H; Xiao Y;

Purpose: In brain tumor surgery, tissue shift (called brain shift) can move the surgical target and invalidate the surgical plan. A cost-effective and flexible tool, intra-operative ultrasound (iUS) with robust image registration algorithms can effectively ...

Article GUID: 36306056


DiffeoRaptor: diffeomorphic inter-modal image registration using RaPTOR

Author(s): Masoumi N; Rivaz H; Ahmad MO; Xiao Y;

Purpose: Diffeomorphic image registration is essential in many medical imaging applications. Several registration algorithms of such type have been proposed, but primarily for intra-contrast alignment. Currently, efficient inter-modal/contrast diffeomorphic ...

Article GUID: 36173541


Deep reconstruction of high-quality ultrasound images from raw plane-wave data: A simulation and in vivo study

Author(s): Goudarzi S; Rivaz H;

This paper presents a novel beamforming approach based on deep learning to get closer to the ideal Point Spread Function (PSF) in Plane-Wave Imaging (PWI). The proposed approach is designed to reconstruct a high-quality version of Tissue Reflectivity Functi ...

Article GUID: 35728310


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