نتایج جستجو برای: magnetic resonanceimaging mri
تعداد نتایج: 409578 فیلتر نتایج به سال:
We present long-term (∼ 10M) axisymmetric simulations of differentially rotating, magnetized neutron stars in the slow-rotation, weak magnetic field limit using a perturbative metric evolution technique. Although this approach yields results comparable to those obtained via nonperturbative (BSSN) evolution techniques, simulations performed with the perturbative metric solver require about 1/4 t...
In vivo imaging techniques can be integrated with classical histochemistry to create an actual histochemistry of water. In particular, Magnetic Resonance Imaging (MRI), an imaging technique primarily used as diagnostic tool in clinical/preclinical research, has excellent anatomical resolution, unlimited penetration depth and intrinsic soft tissue contrast. Thanks to the technological developmen...
background and purpose: disc herniation leading to radiculopathy is one of the important differential diagnosis of low back pain which needs specific medical care. radiculopathies can be initially diagnosed by history taking and physical examination. however role of other diagnostic methods like magnetic resonance imaging (mri) and electromyography (emg) in narrowing differential diagnosis is w...
Breast magnetic resonance imaging (MRI) demands the competing factors of high spatial resolution, good temporal resolution, high signal-to-noise ratios, and complete bilateral breast coverage. Achieving these competing factors requires modern MRI equipment with high magnetic field strength and homogeneity, high maximum gradient strength with short rise times, dedicated multichannel bilateral br...
Magnetic resonance imaging (MRI) provides an in vivo assessment of cortical and subcortical regions affected in Parkinson's disease (PD). This review summarizes the most important conventional and non-conventional MRI techniques applied in this field. Standard neuroimaging techniques have played a marginal role in the diagnosis and follow-up of PD, essentially being used only to discriminate at...
OBJECTIVE To analyze the agreement rate of proton magnetic spectroscopy with magnetic resonance image (MRI) and surface electroencephalography (EEG) in extratemporal neocortical epilepsies. METHODS A cross-sectional study, type series of cases included 33 patients, age range 13-59 years old, of both gender, presenting structural alteration identified by MRI (75.8%) or by neurophysiologic tech...
Müllerian ducts can form upper parts of normal female reproductive system and any failure in ductal fusion may lead to Müllerian Duct Anomalies (MDA). We present a case of MDA, a uterus dysplasia with no evidence of cervical or upper vaginal tissue. This case illustrates the role of Magnetic Resonance Imaging (MRI) on MDA diagnosis and urges the need for a unified reliable and practical classif...
BACKGROUND Pulsed radiofrequency (RF) magnetic fields, required to produce magnetic resonance imaging (MRI) signals from tissue during the MRI procedure have been shown to heat tissues. OBJECTIVES To investigate the relationship between body temperature rise and the RF power deposited during routine clinical MRI procedures, and to determine the correlation between this effect and the body's p...
Coating of carbon nanotubes (CNTs) with magnetic nanoparticles (NPs) imparts novel magnetic, optical, and thermal properties with potential applications in the biomedical domain. Multi-walled CNTs have been decorated with iron oxide superparamagnetic NPs. Two different approaches have been investigated based on ligand exchange or "click chemistry". The presence of the NPs on the nanotube surfac...
Introduction Magnetic resonance imaging (MRI) has become a widespread procedure in critical care patients. Some of these patients are equipped with implanted cardiovascular diagnostic or therapeutic devices. The main risks during MRI are movement due to magnetic attraction and burns. The risks depend on quality and quantity of the implanted conductive metallic material as well as on the strengt...
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