Perfusion MR imaging at 3-Tesla: Can it predict tumor grade and histologic necrosis rate of musculoskeletal sarcoma?

Purpose: To identify quantitative perfusion parameters that are best associated with tumor grade and tumor necrosis at magnetic resonance (MR) imaging at 3-Tesla.

Methods: MR perfusion studies of 31 patients with a musculoskeletal sarcoma were retrospectively evaluated by two readers. There were 18 men and 13 women with a mean age of 34.

The benefit of the systematic revision of the acetabular implant in favor of a dual mobility articulation during the treatment of periprosthetic fractures of the femur: a 49 cases prospective comparative study.

Introduction: The SOFCOT symposium (2005) on periprosthetic fractures of the femur (PFFs) highlighted a high rate of dislocation (15.6% at 6 months) after change of prosthesis. So far, no study has ever proved the benefit of dual-mobility articulation during PFFs revisions.

BIRADS 3 MRI lesions: Was the initial score appropriate and what is the value of the blooming sign as an additional parameter to better characterize these lesions?

Objective: To investigate whether there were suspicious criteria on the initial MRI in BIRADS 3 lesions. To analyze the value of "blooming sign" as an additional criterion for malignancy.

Materials And Methods: In this retrospective study the lesion morphological and enhancement characteristics were analyzed.

Pedagogical childbirth simulators: utility in obstetrics.

Simulation training is an appealing and useful addition to health facilities. Simulation centers are organized to maximize network resources. Simulation training is used for certification or recertification of health professionals and is now an integral part of the methods used in continuing professional development.

Evaluation of tubal microinserts position using 3D ultrasound and pelvic X-ray.

Purpose: To retrospectively compare three-dimensional ultrasonography (3D-US) and pelvic X-rays to assess the position of tubal sterilization microinserts.

Material And Methods: Forty-four patients who underwent tubal sterilization with Essure(®) microinserts in our institution were included. The microinserts'position was evaluated three months after the procedure using 3D-US and pelvic X-rays.

Shear Wave Elastography (SWE): An Analysis of Breast Lesion Characterization in 83 Breast Lesions.

Qualitative and quantitative shear wave elastography (SWE) criteria were assessed to differentiate between malignant and benign breast lesions. This prospective study included 83 lesions. SWE features measured included maximal stiffness values inside the lesion (E(lesion)) and in the peri-lesion area (E(perilesion)) and ratio values (R(lesion) and R(perilesion)) according to the formula E(lesion) or E(perilesion)/E(fat), with E(fat) corresponding to normal fatty tissue.

Biomechanical pregnant pelvic system model and numerical simulation of childbirth: impact of delivery on the uterosacral ligaments, preliminary results.

Introduction And Hypothesis: We created a pregnant woman pelvic model to perform a simulation of delivery to understand the pathophysiology of urogenital prolapse by studying the constraints on the pelvic components (muscles, ligaments, pelvic organs) during childbirth. These simulations will also provide valuable tools to understand and teach obstetrical mechanics.

Methods: We built a numerical model of the pelvic system from a term pregnant woman, using the finite element method on a mesh built from magnetic resonance images of a nulliparous pregnant woman.

3D simulation of pelvic system numerical simulation for a better understanding of the contribution of the uterine ligaments.

Introduction And Hypothesis: Genital prolapse remains a complex pathological condition. Physiopathology remains poorly understood, aetiology is multi-factorial, surgery is not always satisfying, as the rate of relapse cannot be overlooked. More over a good anatomical result will not always guarantee functional satisfaction.