Topography of cerebral monoamine transporter availability in families with SCA2 mutations: a voxel-wise [123I]β-CIT SPECT analysis
Purpose ::: The purpose of this study was to investigate the monoamine transporter status of dopamine, serotonin and norepinephrine throughout the brain in spinocerebellar ataxia type 2 (SCA2). To this end, nine patients were studied with [123I]β-CIT SPECT.
Abstract For future high-capacity multibeam communications satellite services, a large-scale switch matrix, in which a large number of switch elements are incorporated, is necessary and the miniaturization of each element is required. Monolithic IC technology is useful for miniaturization of such a large-scale switch matrix. In this paper, newly developed switch matrix using monolithic GaAs IC technology has presented. As the switch matrix element, monolithic switch module which includes two 2 × 2 switch ICs and two driver ICs has been developed. A manufactured 16 × 16 switch matrix using the monolithic switch modules achieves high isolation greater than 40 dB and very fast switching time of