نتایج جستجو برای: t2 relaxometry
تعداد نتایج: 31231 فیلتر نتایج به سال:
PURPOSE Patients with mesial temporal lobe epilepsy (MTLE) without MRI abnormalities (MTLE-NL) represent a challenge for definition of underlying pathology and for presurgical evaluation. In a recent study we observed significant amygdala enlargement (AE) in 14% of MTLE patients with MRI signs of hippocampal sclerosis. Areas of gray matter volume (GMV) increase could represent structural abnorm...
OBJECTIVE Clear depiction of the common bile duct is important when evaluating neonatal cholestasis in order to differentiate biliary atresia from other diseases. During MR cholangiopancreatography, the T2-shortening effect of gadolinium can increase the contrast-to-noise ratio (CNR) of the bile duct and enhance its depiction. The purpose of this study was to confirm, by performing a phantom st...
• Synthetic MRI acquisitions help decrease examination time compared to conventional sequences. yields more motion artifacts and less spatial resolution MRI. shows lower diagnostic performance for early patellar cartilage chondropathy Mean T2 values are systematically overestimated on synthetic The purpose of this study was compare morphologic assessment relaxometry hyaline between sequences (f...
At the typical spatial resolution of MRI in human brain, approximately 60–90% voxels contain multiple fiber populations. Quantifying microstructural properties distinct populations within a voxel is therefore challenging but necessary. While progress has been made for diffusion and T1-relaxation properties, how to resolve intra-voxel T2 heterogeneity remains an open question. Here novel framewo...
BACKGROUND Experimental tissue fusion benefits from the selective heating of superparamagnetic iron oxide nanoparticles (SPIONs) under high frequency irradiation. However, the metabolic pathways of SPIONs for tissue fusion remain unknown. Hence, the goal of this in vivo study was to analyze the distribution of SPIONs in different organs by means of magnetic resonance imaging (MRI) and histologi...
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