نتایج جستجو برای: voxel pattern analysismvpa

تعداد نتایج: 361371  

Journal: :Schizophrenia research 2013
Julia M Sheffield Lisa E Williams Neil D Woodward Stephan Heckers

Childhood trauma is associated with smaller gray matter volume, similar to the pattern seen in psychotic disorders. We explored the relationship between childhood abuse, psychosis, and brain volume in a group of 60 individuals with a psychotic disorder and 26 healthy control subjects. We used voxel-based morphometry (VBM) to quantify gray and white matter volume and the Childhood Trauma Questio...

2008
J. C. Bosshard M. P. McDougall S. M. Wright

Introduction: Magnetic Resonance Microscopy (MRM) has become an important tool for in-vivo microscopy and in-vitro/exvivo histology [1,2]. One challenge is that very small RF coils are used to obtain high signal-to-noise ratio in small voxel sizes. These small coils limit the field-of-view, necessitating the use of arrays or multiple studies. In this abstract, the extension of our previous work...

Journal: :iranian journal of medical physics 0
ahad zeinali ph.d. student in medical physics, tarbiat modares university, tehran, iran bijan hashemi associate professor, medical physics dept., tarbiat modares university, tehran, iran shahram akhlaghpoor associate professor, radiology dept., faculty of medicine, tehran university, tehran, iran majid mirzaei associate professor, mechanical engineering dept., tarbiat modares university, tehran, iran seyed majid nazemi m.sc. student in mechanical engineering, tarbiat modares university, tehran, iran

introduction: because of the importance of vertebral compressive fracture (vcf) role in increasing the patients’ death rate and reducing their quality of life, many studies have been conducted for a noninvasive prediction of vertebral compressive strength based on bone mineral density (bmd) determination and recently finite element analysis. in this study, qct-voxel based nonlinear finite eleme...

Journal: :مهندسی برق و الکترونیک ایران 0
abbas babajani-feremi hamid soltanian-zad

an integrated model for magnetoencephalography (meg) and functional magnetic resonance imaging (fmri) is proposed. in the proposed model, meg and fmri outputs are related to the corresponding aspects of neural activities in a voxel. post synaptic potentials (psps) and action potentials (aps) are two main signals generated by neural activities. in the model, both of meg and fmri are related to t...

2003
Jean-François Laliberté Jean Meunier Max Mignotte Jean-Paul Soucy

Despite the advent of sophisticated image analysis algorithms, most SPECT (Single Photon Emission Computerized Tomography) cerebral perfusion studies are assessed visually, leading to unavoidable and significant inter and intra-observer variability. Here, we present an automatic method for evaluating SPECT studies based on a computerized atlas of normal regional cerebral blood flow (rCBF). To g...

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