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240 条记录 (耗时 0.02 秒)

    Adaptive contrast enhancement for scanned ultrasonic image
    113.
    发明公开
    Adaptive contrast enhancement for scanned ultrasonic image 失效
    自适应KonstrastverstärkungfürUltraschallabtastbilddaten。

    公开(公告)号：EP0571084A2

    公开(公告)日：1993-11-24

    申请号：EP93303051.2

    申请日：1993-04-20

    申请人： HEWLETT-PACKARD COMPANY

    发明人： Lipschutz, David

    IPC分类号： G06F15/68

    CPC分类号： G01S7/52026

    摘要： A method and apparatus for adaptively enhancing a scanned ultrasound image of body portion having both areas (14) of tissue and areas (16) of blood pool. Clutter (18) which appears in the blood pool areas (16) is removed by processing the image signal (30) to generate a mask signal, which signal is substantially present in areas of tissue to pass such areas and is substantially not present in areas of blood pool to block such areas. The image signal (30) is modulated (36) with the mask signal, preferably on a pixel-by-pixel basis, to substantially remove the clutter.

    摘要翻译： 一种用于自适应地增强身体部分的扫描超声图像的方法和装置，其具有组织的区域（14）和血液池的区域（16）。 出现在血液池区域（16）中的杂波（18）通过处理图像信号（30）被去除以产生掩模信号，该信号基本上存在于组织的区域中以通过这些区域并且基本上不存在于区域 的血池阻挡这些地区。 图像信号（30）利用掩模信号被调制（36），优选地逐个像素地基本上去除杂波。

    An ultrasonic imaging apparatus
    114.
    发明公开
    An ultrasonic imaging apparatus 失效
    超声波成像装置

    公开(公告)号：EP0503858A3

    公开(公告)日：1993-09-29

    申请号：EP92301943.4

    申请日：1992-03-06

    申请人： FUJITSU LIMITED

    发明人： Iida, Atsuo, c/o Fujitsu Limited ,  Noda, Takuya, c/o Fujitsu Limited

    IPC分类号： G01S15/89 ,  A61B8/14 ,  G01S7/52 ,  A61B8/13

    CPC分类号： G01S15/8918 ,  A61B8/14 ,  G01S7/52026 ,  G01S7/52049

    摘要： In an ultrasonic imaging apparatus for obtaining a tomogram image of an object to be diagnosed on a monitor, the apparatus includes electroacoustic transducers, a phasing unit, a phase detection unit, and an adding unit: electroacoustic transducers are provided in a line along with a surface of the object, emitting ultrasonic waves to the object, detecting the ultrasonic waves reflected therefrom, and converting them to electric signals as detection signals; a phasing unit is connected to the electroacoustic transducers for receiving the detection signals, delaying them in accordance with distance between the electroacoustic transducers and the object, and phasing them to match the phase of detection signals; a phase detection unit is connected to the electroacoustic transducers and the phasing unit for detecting the error of phase contained in the detection signals output from the electroacoustic transducers or the phasing unit and correcting the amount of delay previously set in the phase unit in accordance with the error of phase, the phase detection unit further comprising first and second binary units for binalizing the detection signals to detect the error of phase contained in the detection signals; and an adding unit is connected to the phasing unit to accumulate the detection signals phased by the phasing unit.

    Ultrasonic diagnosing apparatus
    117.
    发明公开
    Ultrasonic diagnosing apparatus 失效
    Ultraschall-诊断-Gerät。

    公开(公告)号：EP0505948A1

    公开(公告)日：1992-09-30

    申请号：EP92104917.7

    申请日：1992-03-20

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Sato, Takeshi, c/o Intellectual Property Div.

    IPC分类号： G01S7/52 ,  A61B8/08

    CPC分类号： G01S7/5206 ,  G01S7/52026

    摘要： An object to be examined is scanned with an ultrasonic wave and a tomographic image of the object is obtained on the basis of reflected ultrasonic waves. This image is stored in a frame memory. The types of the motion of the image, i.e., a still image, a motion image and a slight motion are detected on the basis of the difference in image data between the current tomographic image and a past tomographic image, and the correlation between rasters of the current tomographic image. The correlation coefficient used for frame correlation processing between the current tomographic image and the past tomographic image is adaptively changed in accordance with the detection result.

    摘要翻译： 用超声波扫描被检查物体，根据反射的超声波获得被检体的断层图像。 该图像存储在帧存储器中。 基于当前断层图像和过去断层图像之间的图像数据的差异，检测图像的运动类型，即静止图像，运动图像和轻微运动，以及栅格的相关性 当前的断层图像。 根据检测结果自适应地改变用于当前断层图像和过去层析图像之间的帧相关处理的相关系数。

    An ultrasonic imaging apparatus
    118.
    发明公开
    An ultrasonic imaging apparatus 失效
    超声波成像装置

    公开(公告)号：EP0503858A2

    公开(公告)日：1992-09-16

    申请号：EP92301943.4

    申请日：1992-03-06

    申请人： FUJITSU LIMITED

    发明人： Iida, Atsuo, c/o Fujitsu Limited ,  Noda, Takuya, c/o Fujitsu Limited

    IPC分类号： G01S15/89 ,  A61B8/14 ,  G01S7/52 ,  A61B8/13

    CPC分类号： G01S15/8918 ,  A61B8/14 ,  G01S7/52026 ,  G01S7/52049

    摘要： In an ultrasonic imaging apparatus for obtaining a tomogram image of an object to be diagnosed on a monitor, the apparatus includes electroacoustic transducers, a phasing unit, a phase detection unit, and an adding unit: electroacoustic transducers are provided in a line along with a surface of the object, emitting ultrasonic waves to the object, detecting the ultrasonic waves reflected therefrom, and converting them to electric signals as detection signals; a phasing unit is connected to the electroacoustic transducers for receiving the detection signals, delaying them in accordance with distance between the electroacoustic transducers and the object, and phasing them to match the phase of detection signals; a phase detection unit is connected to the electroacoustic transducers and the phasing unit for detecting the error of phase contained in the detection signals output from the electroacoustic transducers or the phasing unit and correcting the amount of delay previously set in the phase unit in accordance with the error of phase, the phase detection unit further comprising first and second binary units for binalizing the detection signals to detect the error of phase contained in the detection signals; and an adding unit is connected to the phasing unit to accumulate the detection signals phased by the phasing unit.

    摘要翻译： 在用于获得监视器上待诊断对象的断层图像的超声成像设备中，该设备包括电声转换器，相控单元，相位检测单元和添加单元：电声转换器沿着 向对象发射超声波，检测从其反射的超声波，并将它们转换为电信号作为检测信号; 相控单元连接到电声换能器，用于接收检测信号，根据电声换能器和物体之间的距离对它们进行延迟，并对它们进行相位调整以匹配检测信号的相位; 相位检测单元连接到电声换能器和相控单元，用于检测包含在从电声换能器或相控单元输出的检测信号中的相位误差，并根据该相位单元校正在相位单元中预先设置的延迟量 所述相位检测单元还包括第一和第二二元单元，用于对所述检测信号进行二值化处理，以检测包含在所述检测信号中的相位误差; 并且增加单元连接到定相单元以累积由定相单元定相的检测信号。

    Ultrasonic analyzers
    120.
    发明公开
    Ultrasonic analyzers 失效
    Ultraschall-Analysatoren。

    公开(公告)号：EP0295893A2

    公开(公告)日：1988-12-21

    申请号：EP88305467.8

    申请日：1988-06-15

    申请人： FUJITSU LIMITED

    发明人： Shiba, Akira ,  Yamada, Isamu ,  Murakami, Keiichi

    IPC分类号： G01S7/52 ,  A61B8/00

    CPC分类号： G01S7/52036 ,  A61B8/06 ,  G01S7/52026

    摘要： An ultrasonic analyzer for use in an ultrasonic diagnosis instrument includes: a first unit (100) for determining a start point (t₁) and an end point (t₂) at an analysis interval (T) to be analyzed based on an analysis selection signal (w(t)) and a time signal (t) for an input time-series signal (y(t)) reflected from a medium; second units (110, 120, 130, 140) for generating four kinds of integration values (x₁ to x₄) based on four kinds of multiplication signals, each of the multiplication signals being calculated by multiplying the analysis selection signal (w(t)) by the time signal (t), or a square signal (t²) of the time signal, or a product signal (y(t).t) of the time signal (t) and the time-series signal (y(t)), or by the time-­series signal (y(t)); third units (111,112; 121,122; 131,132; 141,142) for storing each of the integration values (x₁ to x₄) by using the time signal (t) as an address for storing; and a fourth unit (150) for calculating a slope of a regression curve based on differences between the integration values (x₁ to x₄), a determination of the differences being based on the start point (t₁) and the end point (t₂) at the analysis interval (T). Such an analyzer can enable high precision measurement of an acoustic characteristic of an echo signal reflected from a medium.

    摘要翻译： 一种用于超声波诊断仪器的超声波分析仪包括：第一单元（100），用于基于分析选择信号确定分析间隔（T）的开始点（t1）和终点（t2） w（t））和从介质反射的输入时间序列信号（y（t））的时间信号（t） 用于基于四种乘法信号产生四种积分值（x1至x4）的第二单元（110,120,130,140），每个乘法信号通过将分析选择信号（w（t））乘以 时间信号（t）的时间信号（t）或时间信号的平方信号（t 2）或时间信号（t）的乘积信号（y（t）.t）和时间序列信号 （t））或时间序列信号（y（t））; 用于通过使用时间信号（t）作为存储地址来存储每个积分值（x1至x4）的第三单元（111,112; 121,122; 131,132; 141,142） 以及第四单元（150），用于基于积分值（x1至x4）之间的差异来计算回归曲线的斜率，基于起始点（t1）和终点（t2）之间的差异的确定， 分析间隔（T）。 这种分析器可以实现从介质反射的回波信号的声学特性的高精度测量。