Ryoma Murata

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Tuberous sclerosis is a heredofamilial neurocutaneous syndrome, or phakomatosis, with multisystem involvement including the brain, kidney, skin, retina, heart, lung, and bone. The brain is the most frequently affected organ in tuberous sclerosis. Brain lesions in tuberous sclerosis are of three kinds; cortical tubers, white matter abnormalities, and(More)
MR imaging of the brain was performed in eight patients with mucopolysaccharidosis (MPS). Two had MPS I S, one had MPS IIA, two had MPS IIB, two had MPS IIIB, and one had MPS VI. In the patients with MPS IIA and MPS VI, T1 and T2 were prolonged in various areas of the cerebral white matter. These findings seemed to correspond with the development of(More)
1. A quantitative analysis of facilitation during the kindling stimulation to the amygdala was conducted by measuring the area between the excitatory potential and the baseline in the averaged tetanic response recorded at the entorhinal cortex. The changes in facilitation were then compared with the development of electrographic afterdischarges (AD) and(More)
Subacute sclerosing panencephalitis virus has been isolated with difficulty from brains of infected patients. More strains are needed for the study of the pathogenesis of this virus. To make the isolation more efficient, we selected portions to be examined from the brains of three patients with reference to findings of repeated magnetic resonance and(More)
The effects of insulin-induced hypoglycemia on epileptic disorders of suckling rats were examined using an amygdala kindling model. Kindling stimulations were conducted at 16 and 17 days of age with electrodes implanted in the amygdala 2 days earlier. In 18-day-old kindled rats, which acquired generalized behavioral seizures (stages 4 and 5; Moshé's score)(More)
In this paper, we propose a new multilayer dual-band bandpass filter in a low-temperature co-fired ceramic (LTCC) substrate for ultra-wideband (UWB) applications. This bandpass filter consists of two wideband bandpass filters and matching circuits. It is for UWB applications, which use the band group 1 (3.168-4.752 GHz) and the band groups 3 and 4(More)
We report on a 3-year-old girl with respiratory syncytial virus (RSV) encephalitis manifested by disturbance of consciousness, conjugate eye deviation, anuria, truncal ataxia and intention tremor. T2-weighted magnetic resonance imaging (MRI) showed hyperintense areas in the cerebellar cortex. No lesion was detected in the cerebral cortex, pons or spinal(More)
The cerebral lesions in tuberous sclerosis are of three kinds: subependymal nodules, cortical tubers, and cluster of heterotopic cells in the white matter. Understanding of these hamartomas is still incomplete even with modern imaging modalities. Magnetic resonance (MR) images of ten patients with tuberous sclerosis were reviewed and compared to computed(More)
Magnetic resonance (MR) imaging of a 17-year-old girl with subacute sclerosing panencephalitis (SSPE) was done several times to monitor the morphological changes and clinical course of the disease by comparison with computed tomographic (CT) scans. The MR image showed lesions that corresponded to the clinical symptoms in the early stages where no(More)