نتایج جستجو برای: weighted group
تعداد نتایج: 1072059 فیلتر نتایج به سال:
PURPOSE To determine the value of magnetization transfer (MT) imaging in the evaluation of acute plaques, which cause clinical findings in the brain magnetic resonance (MR) images of patients with relapsing-remitting multiple sclerosis, and its correlation with the clinical findings. MATERIALS AND METHODS Forty patients with relapsing-remitting multiple sclerosis were included in the study. T...
We present a novel weighted spherical harmonic (SPHARM) representation of cortical surfaces and its application to a cortical thickness analysis in autism. The weighted-SPHARM is a hierarchical smoothing technique given as the solution to a parabolic partial differential equation. The weighted-SPHARM generalizes the classical-SPHARM with an additional parameter that modulates the high frequency...
it is necessary to generate the automorphism group of a chemical graph in computer-aidedstructure elucidation. an euclidean graph associated with a molecule is defined by a weightedgraph with adjacency matrix m = [dij], where for i≠j, dij is the euclidean distance between thenuclei i and j. in this matrix dii can be taken as zero if all the nuclei are equivalent. otherwise,one may introduce dif...
Aim: This survey has assessed the self-efficacy and weight loss in obese women in effectiveness of combining group therapy with dietary therapy versus dietary therapy. Methods: Among 168 patients, after the final estimation, 16 patients have been randomly assigned into 2 groups of group therapy and dietary therapy. Each patient has been weighted and filled the QEWP-R questionnaire. One group re...
conclusion the dwmri is a useful technique for evaluating activity of fistulas with abscess. perianal fistula visibility is greater with combined t2wi and dwmri than t2wi alone. patients and methods fifty-three patients with 56 perianal fistulas were included in the current retrospective study. the t2-weighted imaging (t2wi) and dwmri were performed and apparent diffusion coefficient (adc) valu...
The purpose of this study was to compare minimally invasive and conventional dynamic hip screw techniques for the treatment of intertrochanteric fractures in older patients. Relevant randomized, controlled studies were included. The methodological quality was assessed, and data were extracted independently. Five studies (353 fractures) that compared minimally invasive and conventional dynamic h...
Background: Ototoxic chemicals can impair the sense of hearing and balance. In the past decades, the ototoxicity of solvents and their interaction with noise have become evident. This study has been carried out in the shoe manufacturing factory in Tehran (Iran) with the aim of evaluating the combined effects of noise and toluene on the workers' hearing. Materials and Methods: This cross-sect...
Ecological security is an important research topic, especially urban ecological security. As highly populated eco-systems, cities always have more fragile ecological environments. However, most of the research on urban ecological security in literature has focused on evaluating current or past status of the ecological environment. Very little literature has carried out simulation or prediction ...
BACKGROUND/PURPOSE Patients with neurologic complaints are imaged with MRI protocols that may include many pulse sequences. It has not been documented which sequences are essential. We assessed the diagnostic accuracy of a limited number of sequences in patients with new neurologic complaints. METHODS 996 consecutive brain MRI studies from patients with new neurological complaints were divide...
OBJECTIVE To compare the accuracy of acquired diffusion weighted imaging (DWI) (b=1000 s/mm(2)) with that of computed DWI (b=1000 s/mm(2)) for the detection of hepatic metastases. METHODS Two hundred and sixty patients underwent abdominal magnetic resonance imaging (MRI) at 3.0 T for the evaluation of hepatic metastasis, including T1-weighted imaging (T1WI), T2-weighted imaging (T2WI), heavil...
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