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PURPOSE To propose a manual segmentation method for individual quadriceps femoris (QF) muscles and to test its reliability for muscle volume estimation. MATERIALS AND METHODS Images were acquired every 5 mm along the thigh using a 3T MRI scanner on 10 young (mean age: 25 years) and 10 older (mean age: 75 years) adults using a three-point 3D Dixon(More)
Muscle mass is particularly relevant to follow during aging, owing to its link with physical performance and autonomy. The objectives of this work were to assess muscle volume (MV) and intramuscular fat (IMF) for all the muscles of the thigh in a large population of young and elderly healthy individuals using magnetic resonance imaging (MRI) to test the(More)
Behavioural findings indicate that the core executive functions of inhibition and working memory are closely linked, and neuroimaging studies indicate overlap between their neural correlates. There has not, however, been a comprehensive study, including several inhibition tasks and several working memory tasks, performed by the same subjects. In the present(More)
Are individual differences in numerical performance sustained by variations in gray matter volume in schoolchildren? To our knowledge, this challenging question for neuroeducation has not yet been investigated in typical development. We used the Voxel-Based Morphometry method to search for possible structural brain differences between two groups of(More)
OBJECTIVE The aim of this work was to describe chorea during systemic lupus erythematosus or antiphospholipid antibodies and its long-term outcome. METHODS We retrospectively analyzed clinical features, laboratory findings, imaging characteristics, and outcome in a series of 32 patients. RESULTS Most patients were women (28 of 32), and mean age at onset(More)
Antiphospholipid syndrome (APS) is associated with a risk of obstetrical complications, affecting both the mother and the fetus. Obstetrical APS is defined by a history of three consecutive spontaneous miscarriages before 10 weeks of gestation (WG), an intra-uterine fetal death after 10 WG, or a premature birth before 34 WG because of severe pre-eclampsia,(More)
Posterior reversible encephalopathy syndrome (PRES) associates various neurological manifestations (headaches, seizures, altered mental status, cortical blindness, focal neurological deficits, vomiting) and transient changes on neuroimaging consistent with cerebral edema. Posterior reversible encephalopathy syndrome mainly occurs in the setting of(More)
The coexistence of systemic lupus erythematosus (SLE) and myasthenia gravis (MG) is rarely reported, and most of the published studies are case reports. Hydroxychloroquine, an antimalarial agent, is an essential treatment in patients with SLE but special caution is recommended when used in MG patients. We retrospectively analyzed the clinical features,(More)
BACKGROUND Boulogne-Billancourt database is in France the only permanent and specific childhood injury surveillance system. Integrated in an safe community program designed by the World Health Organization (WHO), the aims of a local database are to provide precise information intended to implement prevention actions. METHOD All children less than sixteen(More)
This study investigates the structure–function relationships between the anatomy of Heschl’s gyri (HG) and speech hemispheric lateralization in 281 healthy volunteers (135 left-handers). Hemispheric lateralization indices (HFLIs) were calculated with Wilke’s method from the activations obtained via functional magnetic resonance imaging while listening to(More)