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    • 23. 发明授权
    • Ultrasonic wave Doppler diagnosing apparatus
    • 超声波多普勒诊断仪
    • US5891036A
    • 1999-04-06
    • US923932
    • 1997-09-05
    • Mikio Izumi
    • Mikio Izumi
    • A61B8/06G01S15/58G03B42/06
    • G01S15/582G03B42/06
    • A Doppler ultrasound diagnostic apparatus equipped with Doppler detection units and a forward/reverse separating means in an audio signal output system, a complex Doppler signal control means which stores a complex Doppler signal received during the Doppler-mode period and reads out said complex Doppler signal during the B-mode period to use as a complex Doppler signal during the B-mode period, wherein said complex Doppler signal control means includes storage means for storing complex Doppler signals that are received during the Doppler-mode period; control means for reading out complex Doppler signals stored in said storage means in a reverse order during the B-mode period; complex frequency inversion means for inverting the frequency of the complex Doppler signals read by said control means in the reverse order from said storage means; and phase rotation correction means for correcting a difference in phase at a moment when the Doppler mode is connected to the B-mode for a complex Doppler signal from said complex frequency inversion means. This decreases deterioration in the quality of a Doppler sound.
    • 一种在音频信号输出系统中配备有多普勒检测单元和正向/反向分离装置的多普勒超声诊断装置,复数多普勒信号控制装置,其存储在多普勒模式周期期间接收的复数多普勒信号,并读出所述复数多普勒信号 在B模式周期期间,在B模式周期期间用作复合多普勒信号,其中所述复数多普勒信号控制装置包括用于存储在多普勒模式周期期间接收的复数多普勒信号的存储装置; 控制装置,用于在B模式周期期间以相反的顺序读出存储在所述存储装置中的复数多普勒信号; 复频率反转装置,用于以与所述存储装置相反的顺序反转由所述控制装置读取的复数多普勒信号的频率; 以及相位旋转校正装置,用于在多普勒模式连接到来自所述复频反转装置的复数多普勒信号的B模式的时刻校正相位差。 这降低了多普勒声音质量的恶化。
    • 24. 发明申请
    • SURVEY METER
    • 调查表
    • US20100282975A1
    • 2010-11-11
    • US11938507
    • 2007-11-12
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • Akio SumitaSyunichiro MakinoMikio IzumiTetsuo Goto
    • G01T1/20G01T1/208
    • G01T1/20G01T1/167G01T7/00
    • A survey meter for measuring a radioactive contamination caused in an inner surface of a pipe includes a radiation detecting section and a signal processing section. The radiation detecting section includes a rod-shaped light guide unit, a reflecting portion connected to one end surface of the light guide unit, a photoelectric transfer unit, for outputting an electronic signal, connected to another one end surface of the light guide unit, and a scintillator unit provided to a circumference of the light guide unit. The signal processing section includes a pulse height discriminator for outputting a logic signal at a time when a pulse height value of the electronic signal outputted from the photoelectric transfer unit is higher than a threshold value, a counter unit for counting the logic signal, a contamination judging unit for judging whether a radioactive contamination is caused or not, and a display unit for displaying the value counted by the counter unit and a contamination judging result judged by the contamination judging unit.
    • 用于测量在管内表面产生的放射性污染物的测量计包括辐射检测部分和信号处理部分。 放射线检测部包括棒状导光部,与导光部的一个端面连接的反射部,与导光部的另一个端面连接的电子信号输出用的光电转移部, 以及设置在所述导光单元的周围的闪烁体单元。 信号处理部分包括:脉冲高度鉴别器,用于在从光电转移单元输出的电子信号的脉冲高度值高于阈值时输出逻辑信号,用于计数逻辑信号的计数器单元,污染物 用于判断是否产生放射性污染的判断单元和用于显示由计数器单元计数的值的显示单元和由污染判断单元判断的污染判定结果。
    • 28. 发明申请
    • Ultrasonic probe and ultrasonic diagnosing device
    • 超声波探头和超声诊断装置
    • US20060142659A1
    • 2006-06-29
    • US10543322
    • 2004-01-23
    • Hideki OkazakiMikio Izumi
    • Hideki OkazakiMikio Izumi
    • A61B8/14A61B8/00
    • G10K11/32B06B1/0622
    • An array of a plurality of ultrasonic transducers having a piezoelectric layer 2 and a couple of electrodes 7-1 and 7-2 sandwiching the piezoelectric layer therebetween is provided. The piezoelectric layer 2 has a first piezoelectric layer 2-1 provided on the ultrasonic-wave emission side, a second piezoelectric layer 2-2 provided on the other side of the first piezoelectric layer 2-1, and a common electrode 8 provided therebetween. Each of the ultrasonic transducers has a low-frequency response distribution that is uniform in the minor-axis direction perpendicular to a direction in which the ultrasonic transducers are arranged and a high high-frequency response distribution at a center part in the minor-axis direction. The characteristics of the minor-axis-direction frequency and sound pressure of the first piezoelectric layer are complemented by those of the second piezoelectric layer, whereby a uniform frequency characteristic for a minor-axis-direction low frequency is obtained.
    • 提供了多个超声波换能器的阵列,其具有夹在其间的压电层的压电层2和一对电极7-1和7-2。 压电体层2具有设置在超声波发射侧的第一压电体层2-1和设置在第一压电层2-1的另一侧的第二压电体层-2-2和设置在其间的公共电极8。 每个超声波换能器具有在垂直于配置超声换能器的方向的短轴方向上均匀的低频响应分布,并且在短轴方向的中心部分具有高的高频响应分布 。 第一压电层的短轴方向频率和声压的特性由​​第二压电层的特征补充,从而获得了短轴方向低频的均匀频率特性。