News

Wednesday 13 December 2017

Auteur : Antoine Nordez
Résumé :
Les propriétés biomécaniques d’un muscle ou d’un tendon peuvent aisément être évaluées sur modèle animal in vitro ou ex vivo. Ces évaluations sont fondamentales pour analyser la fonction musculaire et comprendre les effets d’entraînements, de désentraînement ou de pathologies. In vivo chez l’homme, des ergomètres peuvent être utilisés, mais ils renseignent sur les propriétés globales d’un système musculo-articulaire, sans différencier les comportements complexes des très nombreux muscles et structures constituant ce système. L’imagerie (principalement l’IRM ou l’échographie) permettent de mesurer des déplacements tissulaires au sein du système mais ne permet pas d’évaluer directement les propriétés mécaniques des muscles, ni les niveaux de tension ou de contrainte qu’ils subissent. En biomécanique musculaire ou tendineuse, nous sommes donc particulièrement intéressés par l’utilisation des méthodes d’élastographie.
Lors de cette présentation, une synthèse des travaux réalisés dans notre laboratoire sera réalisée (voir les principales références ci-dessous). Je présenterai en particulier les atouts et limites de la technique commercialisée d’élastographie que nous avons utilisé (Supersonic Shear Imaging). Bien que nous ayons principalement mené des études fondamentales, de nombreuses applications cliniques de l’élastographie peuvent être envisagées sur la base de ces études.

Friday 1 December 2017

Author: Professor Chrit Moonen de « lmage Sciences Institute » at Utrecht.
Summary: The Centre for Image Guided Oncological Interventions (CIGOI) of the UMC Utrecht is an initiative of the Division of Imaging at the University Medical Center, Utrecht, the Netherlands with the central objective to provide real-time image guidance for high precision in the treatment of localized tumors. Within the CIGOI a range of unique image-guided treatment techniques have been developed such as MRI controlled 'High Intensity Focused Ultrasound (MRI guided HIFU), MRI-driven linear accelerator (first prototype installed at UMCU), MRI guided robotic brachytherapy, and intra-arterial radio-embolization with holmium microspheres.

Friday 24 November 2017

Presentation Award to Jennifer Wischhusen for the excellent and outstanding presentation

Wednesday 22 November 2017

Author: Emily White MD Director of operations, Charlottesville, USA
Summary: Emily White, MD joined the Foundation in 2016 as Director of Operations. Prior to joining the Foundation, Dr. White was a private consultant working in operations and business development support in the healthcare and medical start-up space. Her clients have included everything from a 4,000+ employee, publically traded, health care company to a brand new start-up with two employees. Her background includes training in general surgery, leadership positions in several highly technical start-up companies with federal clients, non-profit executive management and over 25 years of grant writing experience. She completed her undergraduate degree in Biology & Anthropology at Smith College, holds certification for Community Conflict Resolution from Loyola Law School, and is a University of Virginia School of Medicine graduate.

Friday 10 November 2017

Author: Professor Paul Barbone, Mechanical Engineering, Boston University.
Summary: Isotropic solid materials can support the propagation of both dilatational waves and distortional waves, the latter better known as shear waves. Propagation of shear waves in soft tissues is a subject of considerable current interest in the biomechanics and biomedical imaging communities. For that purpose, we present an axisymmetric model of elastic shear wave propagation to measure dispersive wave speed and attenuation in homogeneous elastic media. Biomedical imaging applications, however, present much more fun and exotic situations to study shear waves, including in the presence of strong magnetic fields, superposed large poroelastic deformations, strong material property gradients, and medium activation. We use mathematical models to study elastic shear wave propagation in these scenarios.

Wednesday 18 October 2017

Author: Heikki J. Nieminen.
Summary: Non-linear ultrasonics enables actuation of matter from a distance in non-contacting manner. At will this can be achieved with negligible thermal effects. Examples of ultrasonic actuation methods include drug transport, ultrasonic manipulation of nano-fiber drug-delivery systems and acoustic levitation of small animals. The talk will give an insight to such ultrasonic biomedical actuation methods investigated at Medical Ultrasonics Laboratory (MEDUSA), Aalto University, Finland.