Recently, dopamine transporter (DaT) scintigraphy, which contributes to the early diagnosis of Parkinsonʼs disease and Lewy body dementia, has been widely spread. It has been revealed that analytical results can be affected by the image-reformatting angle, and a horizontal section is recommended for the anterior commissure-posterior commissure (AC-PC) line according to the clinical guidelines for ioflupane. However, it is difficult to identify AC-PC line visually, as there is no remarkable accumulation in the cerebral parenchyma in DaT scintigraphy with poor contrast resolution. The objective of this study was to establish and optimize an adjustment method for the image-reformatting angle by using orbitomeatal base line (OM line). Evaluations were made on items such as comparison of image reformatting angles by an analyst, comparison of measurement angles of OM line, the angle formed by the intersection of OM line and AC-PC line, and the change in specific biding ratio (SBR) according to the difference in the image-reformatting angle. Consequently, the difference in analytical results among technicians became smaller, and consistent results were obtained by adjusting the image-reformatting angle.
Nowadays, demand for single- and two-seater ultra-compact electric vehicles have been increasing in Japan. Unlike general cars, ultra-compact EVs are able to easily drive on a narrow or unpaved road. Being lightweight, however, it is subject to vibration from road irregularities and road surface steps, and it is necessary to develop a vibration control system for safe and comfortable driving. To improve ride comfort against up-and-down vibration, our research group proposed an active seat suspension using a voice coil motor at the seat section of the vehicle. The active seat suspension directly controls the seat section, which is independent of the vehicle body. Evaluate by focusing on brain communication which is new biometric information t is possible to perform accurate experiment strongly against shearing vibration using a cerebral blood flow meter.