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公开(公告)号：US06344023B1
公开(公告)日：2002-02-05
申请号：US09699458
申请日：2000-10-31
申请人： Hiroshi Fukukita , Morio Nishigaki , Takao Suzuki
发明人： Hiroshi Fukukita , Morio Nishigaki , Takao Suzuki
IPC分类号： A61B800
CPC分类号： A61B8/08 , G01S7/52038 , G01S7/52046
摘要： A nonlinear distortion-based ultrasonic diagnostic imaging system displays a raised-resolution video of tissue inside a body at an increased frame rate. Using a two-pulse technique, a transducer driver supplies narrower-width and wider-width driving pulses to a transducer, which transmits weaker and stronger ultrasonic wave pulses alternately while putting the same intervals between adjacent ultrasonic wave pulses to obtain a weaker echo and a stronger echo. An equalizer equalizes each weaker echo to the stronger echo into an equalized weaker echo. An interpolator calculates an interpolation value between the equalized weaker echo and an equalized previous weaker echo obtained from a previous weaker echo. For each weaker ultrasonic wave pulse, a detector finds a difference between the interpolation value and a stronger echo obtained between the weaker echo and the previous weaker echo. The equalization and interpolation enables high-speed scanning, which has not been achieved with two-pulse technique. Thus, a raised-resolution video signal of the tissue is formed at an increased frame rate on the basis of the difference signal and a scan control signal which is also used in the transducer.
摘要翻译： 基于非线性失真的超声诊断成像系统以增加的帧速率显示身体内的组织的升高分辨率视频。 使用双脉冲技术，换能器驱动器向传感器提供较窄宽度和宽宽度的驱动脉冲，其在相邻超声波脉冲之间施加相同的间隔以交替地传递较弱和更强的超声波脉冲以获得较弱的回波和 更强的回声。 均衡器将每个较弱的回波与较强的回波均衡，达到平衡较弱的回波。 内插器计算均衡的较弱回波和从先前更弱的回波获得的均衡的先前更弱的回波之间的内插值。 对于每个较弱的超声波脉冲，检测器发现内插值与较弱回波和先前较弱回波之间获得的较强回波之间的差异。 均衡和内插可实现高速扫描，这是双脉冲技术尚未实现的。 因此，基于差分信号和在换能器中也使用的扫描控制信号，以增加的帧速率形成组织的升高分辨率的视频信号。
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2.发明授权Ultrasonic diagnostic system using a nonlinearity of an examined body with respect to propagation of ultrasonic wave 失效超声波诊断系统使用被检体的非线性相对于超声波的传播
公开(公告)号：US06099472A
公开(公告)日：2000-08-08
申请号：US299001
申请日：1999-04-26
申请人： Hiroshi Fukukita , Morio Nishigaki
发明人： Hiroshi Fukukita , Morio Nishigaki
CPC分类号： G01S7/52038 , G01S7/52046 , G01S15/105 , G01S7/52023
摘要： An ultrasonic diagnostic system includes a transducer. A first electric drive signal is fed to the transducer. A second electric drive signal is fed to the transducer at a time different from a time of the feed of the first electric drive signal thereto. The second electric drive signal has a waveform different from a waveform of the first electric drive signal. A first received signal is derived from an output signal of the transducer. The first received signal represents ultrasonic echoes related to an ultrasonic beam caused by the transducer in response to the first electric drive signal. A second received signal is derived from the output signal of the transducer. The second received signal represents ultrasonic echoes related to an ultrasonic beam caused by the transducer in response to the second electric drive signal. The first received signal is subjected to a waveform equalizing process, thereby being converted into a third received signal having a waveform corresponding to a waveform of the second received signal. A calculator operates for calculating a difference between the second received signal and the third received signal, and generating a signal representing the calculated difference.
摘要翻译： 超声诊断系统包括换能器。 第一电驱动信号被馈送到换能器。 第二电驱动信号在与第一电驱动信号的馈送时间不同的时间馈送到换能器。 第二电驱动信号具有与第一电驱动信号的波形不同的波形。 第一接收信号是从换能器的输出信号导出的。 第一接收信号表示响应于第一电驱动信号由换能器引起的与超声波束相关的超声回波。 第二个接收信号是从换能器的输出信号导出的。 第二接收信号表示响应于第二电驱动信号由换能器引起的与超声波束相关的超声回波。 对第一接收信号进行波形均衡处理，从而转换成具有对应于第二接收信号的波形的波形的第三接收信号。 计算器用于计算第二接收信号和第三接收信号之间的差，并且产生表示所计算的差的信号。
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公开(公告)号：US5419330A
公开(公告)日：1995-05-30
申请号：US294013
申请日：1994-08-23
CPC分类号： G01S15/8997 , G01S7/52046 , G10K11/348 , G01S15/8915
摘要： In an ultrasonic diagnostic equipment for performing synthetic aperture, deterioration of picture quality produced by the movement of an object is prevented, thereby to provide an excellent image. Arrayed piezoelectric transducers are driven by a transmitting circuit so as to transmit ultrasonic waves into a body, and, among echoes received by piezoelectric transducers, first the signals of the piezoelectric transducers are selected by amplified appropriately by amplifiers and converted into digital signals by added with delay by a beam former thereafter, and stored in a memory. Similarly, the ultrasonic waves are transmitted again, signals of the piezoelectric transducers are selected by the applied with similar signal processing in the amplifiers, and the beam former, and added to signals added with delay of the piezoelectric transducers T3 to T6 stored in a memory 16 by an adder. The added signals are displayed on a display unit after applying signal processing such as detection in a signal processing portion.
摘要翻译： 在用于执行合成孔径的超声波诊断设备中，防止了由物体的运动产生的图像质量的劣化，从而提供优异的图像。 阵列压电换能器由发射电路驱动，以将超声波发射到体内，并且在由压电换能器接收的回波中，首先通过放大器适当放大来选择压电换能器的信号，并通过加入被转换成数字信号 之后由波束形成器延迟并存储在存储器中。 类似地，再次传输超声波，通过在放大器和波束形成器中应用类似的信号处理来选择压电换能器的信号，并将其加到存储在存储器中的压电换能器T3至T6的延迟信号 16由加法器。 在信号处理部分中应用诸如检测的信号处理之后，在显示单元上显示附加的信号。
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公开(公告)号：US5419333A
公开(公告)日：1995-05-30
申请号：US202471
申请日：1994-02-28
CPC分类号： A61B8/06 , G01S15/8981
摘要： An ultrasonic Doppler blood flow meter apparatus includes a wall filter for eliminating clutter from an echo signal of an ultrasonic pulse signal sent to a living being under test. The wall filter includes a switch for cutting a part of input data and a control unit for controlling the switch such that the switch is opened during a period in which first m data (where m is integer) is inputted to undergo filtering by the wall filter while the switch is closed during a period in which data following the (m+1)-th data inclusive thereof are inputted.
摘要翻译： 一种超声波多普勒血流计装置，包括：壁滤波器，用于消除发送给被测生物的超声波脉冲信号的回波信号的杂波。 壁滤器包括用于切割输入数据的一部分的开关和用于控制开关的控制单元，使得在输入第一m个数据（其中m是整数）的时段期间开关被打开以经过壁滤器 同时在其中输入了包括第（m + 1）个数据之后的数据的时段期间关闭开关。
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公开(公告)号：US5263483A
公开(公告)日：1993-11-23
申请号：US977185
申请日：1992-11-16
CPC分类号： G10K11/345 , G01S15/52 , G01S15/8979
摘要： A beam former for a ultrasonic diagnostic apparatus is arranged to have low-bit analog-to-digital converters and enables to obtain an excellent echo signal from blood flow. The beam former further includes a sample and hold circuit for sampling an echo signal of a pulse reflected from the inside of a human body. A delaying circuit serves to delay the output of the sample and hold circuit by a delay time corresponding to an integer multiple of a transmitted pulse period and is subtracted from the output of the sample and hold circuit. The subtracted output is analog-to-digital converted and is stored in a memory. The memory reads out the data asynchronously with the storage. The delaying circuit is composed of an analog-to-digital converter, a memory and a digital-to-analog converter and has a delay time corresponding to an integer multiple of the transmitted pulse period.
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公开(公告)号：US20070160540A1
公开(公告)日：2007-07-12
申请号：US10583025
申请日：2005-07-25
申请人： Morio Nishigaki , Hiroshi Fukukita
发明人： Morio Nishigaki , Hiroshi Fukukita
IPC分类号： A61B8/00
CPC分类号： G01S7/52017 , A61B8/56 , G01S7/52019 , G01S7/52096
摘要： There are provided transducers, transmission pulse generators for transmitting pulses to the transducers, a transmission power source for supplying power to the transmission pulse generators, and an output side capacitor 7 for stabilizing a voltage of the transmission power source. The transmission power source includes a plurality of mode-specific power sources 1A and 1B for outputting a constant voltage, and a mode changeover switch 6 provided between the mode-specific power sources and the output side capacitor. The transmission power source further includes a power supplying power source 2 connected to the mode-specific power sources for supplying power, and a power regeneration capacitor 4 with a larger capacity than that of the output side capacitor, one electrode terminal of which is connected to a connection point between the power supplying power source and the mode-specific power sources and the mode changeover switch, and the other electrode terminal of which is connected to ground. The mode changeover switch is capable of connecting the power regeneration capacitor, instead of each of the mode-specific power sources, to the output side capacitor. There is provided an ultrasonic diagnostic apparatus that reuses power stored in the output side capacitor to reduce power consumption.
摘要翻译： 提供换能器，用于向换能器发送脉冲的传输脉冲发生器，用于向发送脉冲发生器供电的发送电源，以及用于稳定发送电源的电压的输出侧电容器7。 发送电源包括用于输出恒定电压的多个模式特定电源1A和1B，以及设置在模式特定电源和输出侧电容器之间的模式切换开关6。 发送电源还包括连接到用于供电的模式特定电源的供电电源2和具有比输出侧电容器的容量大的电力再生电容器4，其一个电极端子连接到 供电电源和模式特定电源与模式切换开关之间的连接点，另一个电极端子连接到地。 模式转换开关能够将功率再生电容器代替每个模式特定的电源连接到输出侧电容器。 提供了一种超声波诊断装置，其重新使用存储在输出侧电容器中的电力来降低功耗。
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公开(公告)号：US06364836B1
公开(公告)日：2002-04-02
申请号：US09634857
申请日：2000-08-08
IPC分类号： A61B800
CPC分类号： G01S7/52066 , G01S7/52046 , G01S15/8979 , G10K11/346
摘要： An ultrasound diagnostic apparatus includes a probe which outputs RF signals. There are N phase detectors for converting the RF signals outputted from the probe into baseband signals In and Qn, where “N” denotes a first predetermined natural number and “n” denotes a second predetermined natural number set as 2≦n≦N. A reception beam former operates for processing the baseband signals In and Qn into a time-division-multiplexed signal. The reception beam former includes a device for multiplying the baseband signals In and Qn by phase shift data to generate multiplication-resultant signals, a device for delaying the multiplication-resultant signals to generate delay-resultant signals, and a device for combining the delay-resultant signals into the time-division-multiplexed signal.
摘要翻译： 超声波诊断装置包括输出RF信号的探针。 存在用于将从探测器输出的RF信号转换为基带信号In和Qn的N相检测器，其中“N”表示第一预定自然数，“n”表示设置为2 <= n
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公开(公告)号：US5311870A
公开(公告)日：1994-05-17
申请号：US878623
申请日：1992-05-05
CPC分类号： G01S15/582 , G01S15/8979 , H03D3/007 , H03D2200/005 , H03D2200/0062
摘要： An ultrasonic Doppler imaging apparatus emits ultrasonic pulse waves to an object body under test and provides information on blood flow in the body based on Doppler shifts of ultrasonic waves reflected back from the object body. The ultrasonic pulse waves emitted by a probe to the object body undergo Doppler shifts by being reflected by the blood stream, and the reflected ultrasonic waves received by the probe are decomposed with an A/D converter in synchronism with emission. The decomposed data are transformed into complex Doppler data through a quadrature addition/subtraction by quadrature addition/subtraction means. The complex Doppler data is subjected to frequency analysis through correlative computation or the like, and resulting data is stored in a frame memory and displayed. The apparatus is capable of measuring the Doppler shift frequency accurately.
摘要翻译： 超声波多普勒成像装置向被检测物体发射超声波脉冲波，并且基于从物体反射回来的超声波的多普勒频移，提供关于体内血流量的信息。 由探针发射到物体的超声脉冲波被血流反射而进行多普勒频移，并且由A / D转换器与发射同步地将由探头接收的反射的超声波分解。 分解的数据通过正交加法/减法装置的正交加减法变换为复数多普勒数据。 通过相关计算等对复数多普勒数据进行频率分析，将结果数据存储在帧存储器中并进行显示。 该装置能够准确地测量多普勒频移频率。
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公开(公告)号：US07699777B2
公开(公告)日：2010-04-20
申请号：US10583025
申请日：2005-07-25
申请人： Morio Nishigaki , Hiroshi Fukukita
发明人： Morio Nishigaki , Hiroshi Fukukita
IPC分类号： A61B8/00
CPC分类号： G01S7/52017 , A61B8/56 , G01S7/52019 , G01S7/52096
摘要： There are provided transducers, transmission pulse generators for transmitting pulses to the transducers, a transmission power source for supplying power to the transmission pulse generators, and an output side capacitor 7 for stabilizing a voltage of the transmission power source. The transmission power source includes a plurality of mode-specific power sources 1A and 1B for outputting a constant voltage, and a mode changeover switch 6 provided between the mode-specific power sources and the output side capacitor. The transmission power source further includes a power supplying power source 2 connected to the mode-specific power sources for supplying power, and a power regeneration capacitor 4 with a larger capacity than that of the output side capacitor, one electrode terminal of which is connected to a connection point between the power supplying power source and the mode-specific power sources and the mode changeover switch, and the other electrode terminal of which is connected to ground. The mode changeover switch is capable of connecting the power regeneration capacitor, instead of each of the mode-specific power sources, to the output side capacitor. There is provided an ultrasonic diagnostic apparatus that reuses power stored in the output side capacitor to reduce power consumption.
摘要翻译： 提供换能器，用于向换能器发送脉冲的传输脉冲发生器，用于向发送脉冲发生器供电的发送电源，以及用于稳定发送电源的电压的输出侧电容器7。 发送电源包括用于输出恒定电压的多个模式特定电源1A和1B，以及设置在模式特定电源和输出侧电容器之间的模式切换开关6。 发送电源还包括连接到用于供电的模式特定电源的供电电源2和具有比输出侧电容器的容量大的电力再生电容器4，其一个电极端子连接到 供电电源和模式特定电源与模式切换开关之间的连接点，另一个电极端子连接到地。 模式切换开关能够将功率再生电容器代替每个模式特定的电源连接到输出侧电容器。 提供了一种超声波诊断装置，其重新使用存储在输出侧电容器中的电力来降低功耗。
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公开(公告)号：US5269308A
公开(公告)日：1993-12-14
申请号：US912752
申请日：1992-07-13
IPC分类号： A61B8/06
CPC分类号： A61B8/06 , G01S15/8981
摘要： Disclosed is an ultrasonic Doppler imaging apparatus in which the velocity of a blood flow in a living body can be computed with high precision without increasing a scale of a signal processing circuit, so that a Doppler color image having satisfactory image quality is displayed. In the apparatus, an ultrasonic pulse signal is transmitted into the living body and is reflected from a target in the living body to be received by an ultrasonic probe, and the reception signal is subjected to quadrature phase detection to obtain an I signal and a Q signal. When an amplitude evaluating unit evaluates on the basis of the intensity of the I and Q signals that the reception signal contains many clutter components, a cut-off frequency of high-pass filters is increased by the application of a control signal (A) to thereby eliminate low-frequency clutter components. The outputs of the high-pass filters are converted into blood flow velocity information to be displayed as a Doppler color image.
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