Hisao Nakamura

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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)
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)
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)
Electronic and structural detail at the electrode-molecule interface have a significant influence on charge transport across molecular junctions. Despite the decisive role of the metal-molecule interface, a complete electronic and structural characterization of the interface remains a challenge. This is in no small part due to current experimental(More)
We performed first principles calculations of Resistive Random Access Memory (ReRAM) cell, which consists of HfO<sub>2</sub> resistive layer and TiN electrodes, by using nonequilibrium Green's function theory combined with density functional theory (NEGF-DFT). To analyze the transport mechanism of low/high resistive (ON/OFF) states, we examined several(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)
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)
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