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81. 发明授权

US5513640A Diagnostic ultrasound system 失效
标题翻译：诊断超声系统
公开(公告)号：US5513640A
公开(公告)日：1996-05-07
申请号：US415479
申请日：1995-03-31
申请人： Nobuo Yamazaki , Fumiyasu Sakaguchi
发明人： Nobuo Yamazaki , Fumiyasu Sakaguchi
IPC分类号： G01N29/00 , A61B8/06 , A61B8/08 , G01N29/06 , G01S7/52 , G01S15/89 , A61B8/00
CPC分类号： G01S7/52071 , G01N29/0609 , G01S15/8979 , G01S15/899 , G01S7/5206
摘要： A diagnostic ultrasound system is provided for displaying a color image of a motion of a tissue scans an ultrasonic pulse signal along a tomographic plane to acquire an electrical echo signal, extracts a Doppler signal from the echo signal, calculates velocity data concerning the motion of the tissue for respective sample points on the tomographic plane on the basis of the Doppler signal, and forms data of a B-mode tomographic image on the basis of the echo signal. The system comprises an element for setting a scale along which each of the velocity data over a measurable band of frequencies of the Doppler signal is assigned to each gradation data for color display, the measurable band of frequencies being limited by a pulse repetition frequency of the ultrasonic pulse signal and a given low-velocity band of the measurable frequency band being enhanced in the gradation data than a remaining velocity band of the measurable band, an element for converting the velocity data into the gradation data according to the scale, an element for blanking either one of the converted gradation data and the calculated velocity data at every sample point when each of them exceeds a specified threshold, and an element for displaying the velocity color image subjected to blanking and superimposed on the B-mode tomographic image.
摘要翻译：提供一种诊断超声系统，用于显示组织的运动的彩色图像沿着断层摄影平面扫描超声脉冲信号以获取电回声信号，从回波信号中提取多普勒信号，计算关于运动的速度数据基于多普勒信号在断层摄影平面上的各个采样点的组织，并且基于回波信号形成B模式断层摄影图像的数据。该系统包括用于设置刻度的元件，沿着该刻度将多普勒信号的可测量频带上的每个速度数据分配给用于彩色显示的每个灰度数据，所述可测量的频带频带受到所述多普勒信号的脉冲重复频率的限制超声波脉冲信号和可测量频带的给定低速带在灰度数据中比可测量频带的剩余速度带增强，用于根据比例将速度数据转换为灰度数据的元件，用于在每个采样点超过指定阈值时，将所转换的灰度数据和计算出的速度数据中的任何一个消隐，以及用于显示经过消隐并叠加在B模式断层图像上的速度彩色图像的元件。

82. 发明授权

US4972838A Ultrasonic diagnostic apparatus 失效
标题翻译：超声波诊断仪
公开(公告)号：US4972838A
公开(公告)日：1990-11-27
申请号：US378696
申请日：1989-07-11
申请人： Nobuo Yamazaki
发明人： Nobuo Yamazaki
IPC分类号： G01S15/89
CPC分类号： B82Y15/00 , G01S15/8979
摘要： The present invention relates to a technique for setting a sample point in a pulse Doppler scan in a linear scan type ultrasonic diagnostic apparatus. A transmitting/receiving system for transmitting/receiving a linear scan of ultrasonic beams to/from a subject includes a linear scan probe, a pulser, a preamplifier, a receiving delay line and a summing circuit, as well as a sample point setter and a deflection angle setting circuit. The ultrasonic diagnostic apparatus includes a control system for fixing the initially set position of the sample point in the subject, when the deflection angle is reset by the deflection angle setting circuit, and for changing a set value of the sample point setting circuit so that the fixed position of the sample point coincides with a sample point of an ultrasonic beam to be propagated based on the reset deflection angle, and an image system having at least a D-mode processor for frequency-analyzing a received signal corresponding to the sample point to find a Doppler deviation frequency fd, and calculating bloodstream velocity data of the subject from the found doppler deviation frequency fd.
摘要翻译：本发明涉及在线性扫描型超声波诊断装置中设定脉冲多普勒扫描中的采样点的技术。用于向/从对象发送/接收超声波束的线性扫描的发送/接收系统包括线性扫描探针，脉冲发生器，前置放大器，接收延迟线和求和电路，以及采样点设定器和偏转角设定电路。超声波诊断装置包括：控制系统，用于在通过偏转角设定电路复位偏转角的同时，将采样点的初始设定位置固定在被摄体中，并且用于改变采样点设定电路的设定值，使得基于复位偏转角，采样点的固定位置与要传播的超声波束的采样点一致，以及至少具有D模式处理器的图像系统，用于频率分析对应于采样点的接收信号找到多普勒偏差频率fd，并从所发现的多普勒偏差频率fd计算受试者的血流速度数据。

83. 发明授权

US4876022A Method for preparing ferromagnetic iron oxide particles 失效
标题翻译：制备铁磁性氧化铁颗粒的方法
公开(公告)号：US4876022A
公开(公告)日：1989-10-24
申请号：US928487
申请日：1986-11-10
申请人： Nobuo Yamazaki , Tatsuji Kitamoto
发明人： Nobuo Yamazaki , Tatsuji Kitamoto
IPC分类号： H01F1/11 , C01G49/00 , G11B5/706 , G11B5/712
CPC分类号： G11B5/70678 , G11B5/70657 , G11B5/712
摘要： A method for preparing ferromagnetic iron oxide particles comprising the steps of depositing Co-ferrite fine particles onto the surface of acicular iron oxyhydroxide particles and then calcining said acicular iron oxyhydroxide having said C0-ferrite fine particles deposited thereon.
摘要翻译：一种制备铁磁性氧化铁颗粒的方法，包括以下步骤：将钴铁氧体细颗粒沉积在针状羟基氧化铁颗粒的表面上，然后煅烧其上沉积有所述C0-铁氧体微粒的所述针状铁羟基氧化铁。

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