نتایج جستجو برای: brain volumes

تعداد نتایج: 519830  

2009
Sandra Chanraud Claire Leroy Catherine Martelli Nikoleta Kostogianni Françoise Delain Henri-Jean Aubin Michel Reynaud Jean-Luc Martinot

Even though uncomplicated alcoholics may likely have episodic memory deficits, discrepancies exist regarding to the integrity of brain regions that underlie this function in healthy subjects. Possible relationships between episodic memory and 1) brain microstructure assessed by magnetic resonance diffusion tensor imaging (DTI), 2) brain volumes assessed by voxel-based morphometry (VBM) were inv...

Hassan Hosseini-Ravandi, Milad Ahmadi,

Brain areas implicated in the stress response include the amygdala, hippocampus and prefrontal cortex. Neonatal stimulation of an animal by handling or by enhanced maternal care induces at adult age a decrease of the hypothalamo-pituitary adrenal (HPA) response to stressors, a decrease of anxiety in a novel environment, and neuroanatomical changes. In this present study we demonstrated that mat...

2017
Martine Elbejjani Pamela J Schreiner David S Siscovick Stephen Sidney Cora E Lewis Nick R Bryan Lenore J Launer

INTRODUCTION Several findings suggest that testosterone (T) is neuroprotective and that declining T levels during aging are associated with cognitive and brain pathologies; however, little is known on T and brain health in middle-age. We examined the relationships of total T, bioavailable T, and sex hormone binding globulin (SHBG) levels with total and regional gray matter (GM) and white matter...

Journal: :Journal of the American Medical Informatics Association 2001

Journal: :journal of medical signals and sensors 0
hassan khotanlou mahlagha afrasiabi

this paper introduces a novel methodology for the segmentation of brain ms lesions in mri volumes using a new clustering algorithm named scpfcm.  scpfcm uses membership, typicality and spatial information to cluster each voxel. the proposed method relies on an initial segmentation of ms lesions in t1-w and t2-w images by applying scpfcm algorithm, and the t1 image is then used as a mask and is ...

2011
Nicola De Stefano Maria Laura Stromillo Francesca Rossi Marco Battaglini Antonio Giorgio Emilio Portaccio Bahia Hakiki Gianmichele Malentacchi Claudio Gasperini Mario Santangelo Maria Letizia Bartolozzi Maria Pia Sormani Antonio Federico Maria Pia Amato

OBJECTIVE To improve the characterization of asymptomatic subjects with brain magnetic resonance imaging (MRI) abnormalities highly suggestive of multiple sclerosis (MS), a condition named as "radiologically isolated syndrome" (RIS). METHODS Quantitative MRI metrics such as brain volumes and magnetization transfer (MT) were assessed in 19 subjects previously classified as RIS, 20 demographica...

Journal: :Cerebral cortex 2000
S M Resnick A F Goldszal C Davatzikos S Golski M A Kraut E J Metter R N Bryan A B Zonderman

Longitudinal studies indicate that declines in cognition and memory accelerate after age 70 years. The neuroanatomic and neurophysiologic underpinnings of cognitive change are unclear, as there is little information on longitudinal brain changes. We are conducting a longitudinal neuroimaging study of nondemented older participants in the Baltimore Longitudinal Study of Aging. This report focuse...

Journal: :BMC Psychiatry 2006
Donald C Rojas Eric Peterson Erin Winterrowd Martin L Reite Sally J Rogers Jason R Tregellas

BACKGROUND Although differences in brain anatomy in autism have been difficult to replicate using manual tracing methods, automated whole brain analyses have begun to find consistent differences in regions of the brain associated with the social cognitive processes that are often impaired in autism. We attempted to replicate these whole brain studies and to correlate regional volume changes wit...

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