نتایج جستجو برای: apparent diffusion coeffi cient

تعداد نتایج: 279086  

Journal: :Neuroreport 2005
Babak A Ardekani Arthika Bappal Debra D'Angelo Manzar Ashtari Todd Lencz Philip R Szeszko Pamela D Butler Daniel C Javitt Kelvin O Lim Jan Hrabe Jay Nierenberg Craig A Branch Matthew J Hoptman

Loss of cortical gray matter is accompanied by a commensurate increase in the sulcal and intraventricular cerebrospinal fluid volume. On diffusion-weighted magnetic resonance imaging, this would be reflected as a higher apparent diffusion coefficient in affected brain regions. On the basis of the above premise, we suggest that the apparent diffusion coefficient may be used as a surrogate marker...

2017
Mark W Cornwall Carissa Lane Jennifer Norwood Daniel Strauss

The Sit-to-Stand test (STST) involves comparing the change in a person’s non-weight-bearing and weightbearing foot posture to quickly classify a person’s overall foot mobility. Despite the simplicity of the test, its reliability and validity has not been established. The purpose of this study is to determine the intra-rater and inter-rater reliability of the STST as well as its validity. Ninety...

Journal: :journal of studies in learning and teaching english 0
masoumeh mehregan university of isfahan

this study was an attempt to examine the relationship between iranian efl students’ general knowledge of english and their use of english prepositions. to discover whether there was any sig- nificant relationship between efl university and high school students’ english proficiency level and their performance on a preposition test, three groups of beginning, intermediate, and upper intermediate ...

Journal: :dental research journal 0
saied sadeghian ali mohammad kalantar motamedi alireza haerian elahe rafiei

background: regarding the need for determining the cephalometric norms for each population and the advantages of proportional analyses, we evaluated the variables of mcnamara and schwartz analyses and their relation in a pilot study on 6-17 years old iranian students and provided formulas, which show these relations. materials and methods: in this descriptive-analytical study, a tatal of cephal...

Journal: :Brain : a journal of neurology 2011
Marianne E Steenweg Petra J W Pouwels Nicole I Wolf Wessel N van Wieringen Frederik Barkhof Marjo S van der Knaap

Leucoencephalopathy with brainstem and spinal cord involvement and elevated lactate is a white matter disorder caused by DARS2 mutations. The pathology is unknown. We observed striking discrepancies between improvement on longitudinal conventional magnetic resonance images and clinical deterioration and between large areas of high signal on diffusion-weighted imaging and small areas with low ap...

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