نتایج جستجو برای: magnetic resonanceimaging mri
تعداد نتایج: 409578 فیلتر نتایج به سال:
Because of its noninvasive nature and provision of quantitative measures of a wide variety of physiologic parameters, functional magnetic resonance imaging (MRI) shows great potential for research and clinical applications. Over the past decade, application of functional MRI extended beyond detection of cerebral activity, and techniques for abdominal functional MRI evolved. Assessment of renal ...
Background and purpose: Optic neuritis is one of the common causes of unilateral or bilateral visual loss. The most common cause of this disorder is demyelinating disease of the central nervous system (CNS) and most of the patients with optic neuritis will present other signs of multiple sclerosis (MS). The diagnosis depends on the clinical findings, however, magnetic resonance imaging (MRI) is...
Background: There are multiple diagnostic methods for evaluation of patients with low back pain with a radicular pattern, each one has it's own accuracy and diagnostic ability and so comparing them with each other would help the clinicians to find the best diagnostic method. The main objective of our study was to compare the diagnostic accommodation of electromyography (EMG) and Magnetic Resona...
Background: Magnetic resonance imaging (MRI) is of great aid in the diagnosis of knee lesions. Nevertheless, arthroscopy has remained the reference standard for the diagnosis of internal derangements of the knee, against which alternative diagnostic modalities should be compared. This study was designed to assess the value of MRI and clinical examination in the diagnosis of Anterior Cruciate Li...
This study investigates the effectiveness of hundreds of texture features extracted from voxel-based dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) parametric maps for early prediction of breast cancer response to neoadjuvant chemotherapy (NAC). In total, 38 patients with breast cancer underwent DCE-MRI before (baseline) and after the first of the 6-8 NAC cycles. Quantitative ph...
Previously (Z. Angew. Math. Phys. 57:615–622, 2006), we examined the axisymmetric stability of viscous resistive magnetized Couette flow with emphasis on flows that would be hydrodynamically stable according to Rayleigh’s criterion: opposing gradients of angular velocity and specific angular momentum. A uniform axial magnetic field permeates the fluid. In this regime, magnetorotational instabil...
Ann Saudi Med 2006;26(4):306-309 Magnetic resonance imaging (MRI) has been in clinical use for more than two decades. At the time of introduction of this important diagnostic tool, there were many concerns about its safety and the effects of the different types of magnetic fields utilized in MRI on the body tissues. Safety of MRI in pregnancy, however, was and still is one of the important conc...
Purpose: The present study aimed to find reliability of magnetic resonance imaging (MRI) in patients with lumbar disk herniation. Methods: In this cross-sectional study, 110 individuals aged 20-50 years with chronic low back pain (LBP) of more than 3 months were enrolled by nonprobability convenient sampling method. Only disk herniated patients of L4-L5 and L5-S1, diagnosed by physicians on th...
Objective(s): The aim of this work was to prepare and characterize magnetic nanoparticles (MNPs) as theranostic system to act simultaneously as drug carrier and MRI contrast agent. Chitosan-coated MNPs (CMNPs) were prepared and loaded with silymarin. Silymarin-loaded CMNPs were characterized with various techniques and their potential as MRI contrast agent was also evaluated. Materials and Meth...
Background: Several treatments have been proposed to control Multiple Sclerosis (MS). Fingolimod is the first oral medication for the disease that was approval by Food and Drug Administration American (FDA) since 2010 and is produced in Iran from October 2013. The aim of this study was evaluation of the effect of fingolimod on the number of brain plaque in multiple sclerosis patients before and...
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