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Two technical challenges must be overcome before brain fiber tracking with diffusion-tensor magnetic resonance (MR) imaging can be applied to clinical practice: Imaging time must be shortened, and image distortion must be minimized. Single-shot echo-planar MR imaging with parallel imaging technique enabled both objectives to be accomplished. Twenty-three(More)
BACKGROUND AND PURPOSE We tested the feasibility of a new MRI technique that provides visualization of the sensorimotor tracts in vivo in a group of stroke victims. SUMMARY OF REPORT Fourteen patients with small infarctions involving the white matter of the supratentorial brain were evaluated. Sensorimotor tracts on the lesional and contralesional sides(More)
PURPOSE To test the hypothesis that an interval evolution in the location of the depicted sensorimotor tract relative to the infarct (the "tract-infarct relationship") may be related to stroke victims' symptom progression. MATERIALS AND METHODS Patients (N = 7) who underwent multiple diffusion-tensor imaging (DTI) studies during symptomatic progression(More)
BACKGROUND AND PURPOSE Diffusion-weighted imaging (DWI) is usually done before administration of intravenous contrast agents. Repetition of DWI is occasionally necessary after administration, but the effects of contrast material on DWI and apparent diffusion coefficient (ADC) values have not yet been fully examined. The present study assesses whether(More)
BACKGROUND AND PURPOSE Diffusion-weighted (DW) imaging has limited spatial resolution, especially in the z direction. We decreased the section thickness of DW imaging to 3 mm to determine if this change improves the depiction of small infarcts and if it affects stroke diagnosis. METHODS We studied conventional (5-mm section thickness, 1-mm intersection(More)
INTRODUCTION Collecting duct carcinoma is a rare type of renal cell carcinoma. The primary is difficult to diagnose on imaging, and metastases are often present on initial presentation. Extensive multiorgan metastases can result in complex presentations that can be difficult to diagnose. CASE PRESENTATION We present two case reports of multiorgan(More)
RATIONALE AND OBJECTIVES The authors' purpose was to search the inversion time (TI) values that enable the best differentiation of fine structures in gray matter (gray-gray differentiation). MATERIALS AND METHODS Seven healthy adult volunteers with no history of neurologic disease or head trauma were recruited and gave their informed consent. The subjects(More)
In addition we revealed that the levels of IgG-abs to HSV were being increased in proportion to a severity of AD. Maximal increased level of IgG-abs to HSV was in children with severe AD (Me ¼ 2.93 units of OD (0.14–3.15); P , 0.05). Conclusions: The detection of the elevated levels of the autoantibodies, especially against the background of herpetic(More)
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