51IllustrationMeasurement of ultrasound velocityUltrasound CT imagingMedical AcousticsYamagata University Graduate School of Science and Engineering Research InterestE-mail ：yanagi@yz.yamagata-u.ac.jpUltrasound NDTTel ：+81-238-26-3328Fax：+81-238-26-3328E-mail ・ yanagi@yz.yamagata-u.ac.jpTel ・ +81-238-26-3328Fax ・ +81-238-26-3328transmittousingContent：ContentAcoustic Imaging Acoustic Imaging We have reported that these combination techniques adopted for high We have reported that these combination techniques speed three dimensional ultrasound imaging. A combination of coded adopted for high speed three dimensional ultrasound excitation and synthetic aperture focusing technique enables data imaging. A combination of coded excitation and synthetic collection at a high frame rate and focusing at any depth. The aperture focusing technique enables data collection at a dynamic range of the ultrasound images was approximately 35db in high frame rate and focusing at any depth. The dynamic our system. range of the ultrasound images was approximately 35db in Ultrasound CT for Woodour system. Wood has an anisotropic property for the sound velocity. The sound Ultrasound CT for Woodvelocity is different between the path through the center (radial) and Wood has an anisotropic property for the sound velocity. the path near the edge (tangential). This anisotropic property makes The sound velocity is different between the path through the ring-shaped artifacts on the edge side of an ultrasound velocity CT center (radial) and the path near the edge (tangential). This image. However, the anisotropic acoustic property has not been anisotropic property makes ring-shaped artifacts on the considered for the imaging process in the conventional ultrasound edge side of an ultrasound velocity CT image. However, the CT methods. To avoid this ring-shaped artifact, we improved the anisotropic acoustic property has not been considered for conventional ultrasound velocity CT method with consideration of the imaging process in the conventional ultrasound CT the anisotropic property.methods. To avoid this ring-shaped artifact, we improved the conventional ultrasound velocity CT method with consideration of the anisotropic property.Yamagata University Graduate School of Science and Engineering Research Interest：Ultrasound NDTContent:We’reworkingonthedevelopmentofIoTsensor-networkContentsystemwithwhichhealthmanagementcanbeperformed"anytimeandanywhere". We’re working on the development of IoT sensor-network system ①①“Measuring”Wearedevelopingasystemusefulforhealthwith which health management can be performed “anytime and anywhere”.managementinwhichfingertippulsewavesaremeasuredandthen①“Measuring” We are developing a system useful for health pulse,bloodpressureandstressarealsoestimated.Thenaturalmanagement in which fingertip pulse waves are measured and then biologicaldataismeasuredinordinaryactivitiessuchasoperatingapulse, blood pressure and stress are also estimated. The natural biological data is measured in ordinary activities such as operating PC,asmartphone,andthelikewithoutnoticingmeasurementandisa PC, a smartphone, and the like without noticing measurement and thenanalyzed.Thesystemisunderdevelopmenttoprovidehealthis then analyzed. The system is under development to provide managementwithatouchofitandadviceasnecessary.health management with a touch of it and advice as necessary.②“Processing” We are designing and evaluating IC chips to ②②“Processing”WearedesigningandevaluatingICchipstoperformperform arithmetic processing of measured signals. We set the goal arithmeticprocessingofmeasuredsignals.Wesetthegoaltodevelopto develop an environment-friendly ecosystem that is compact and anenvironment-friendlyecosystemthatiscompactandultra-lowultra-low power consuming with use of a new method called adiabatic logic circuit technique.powerconsumingwithuseofanewmethodcalledadiabaticlogic③“IoT system” In the ubiquitous health management system, it is circuittechnique.indispensable to transmit data using high-frequency radio ③③“IoTsystem“Intheubiquitoushealthmanagementsystem,itiscommunication. Thus, we design antennas, signal processing filters, amplifiers, and more and implement those on compact and highly-indispensablehigh-frequencydataradiofunctional boards. Now we are developing IoT sensor-bed systemcommunication.Thus,wedesignantennas,signalprocessingfilters,for comfortable sleeping & awakening.amplifiers,andmoreandimplementthoseoncompactandhighly-functionalboards.NowwearedevelopingIoTsensor-bedsystemSpecial objectivesforcomfortablesleeping&awakening. I am going to promote the “Industry-academia collaboration” aggressively. AppealingPoint:Iamgoingtopromotethe“Industry-academiacollaboration”aggressively.Yamagata University Graduate School of Science and Engineering Research InterestYamagata UniversityGraduate School of Science and Engineering IoT Sensor Network System, IC DesignResearch Interest：IoT Sensor Network System, IC DesignE-mail ：yoko@yz.yamagata-u.ac.jpE-mail ・ yoko@yz.yamagata-u.ac.jpTel ：+81-238-26-3315Tel ・ +81-238-26-3315HP ：http://ceyoko.yz.yamagata-u.ac.jp/HP・http://ceyoko.yz.yamagata-u.ac.jp/Development of IoT SensorNetwork Health-care System Associate Professor HirotakaYanagidaDevelopment of IoT Sensor Network Health-care System Ultrasound Medical Imaging and Medical TreatmentUltrasound Medical Imaging and Medical Treatment Associate Professor Michio YOKOYAMAAssociate Professor Michio YokoyamaAssociate Professor Hirotaka YanagidaIoT Health-care SystemTangiblesensingIoTSensor-networkSystemPhotoplethysmography SensorLow-power Design
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