Three-dimensional ultrasound imaging of velocity and power data
    101.
    发明公开
    Three-dimensional ultrasound imaging of velocity and power data 有权
    Dreidimensionale ultraschall-Bilderzeugung von Geschwindigkeits- und Leistungs- Dateien

    公开(公告)号:EP1004896A3

    公开(公告)日:2003-03-26

    申请号:EP99309311.1

    申请日:1999-11-23

    IPC分类号: G01S15/89 G01S7/52

    摘要: A three-dimensional image of flowing fluid or moving tissue using velocity or power Doppler data is displayed by using an ultrasound scanner that collects velocity or power data in a cine memory to form a volume of pixel data. Average or median pixel values are projected (86) on an image plane by casting rays through the data volume. As the ray passes through each scan plane, a data value is assigned to the ray at that point. At each scan plane, the assigned pixel data value is tested (88) to see if it exceeds a noise threshold. For a given ray, pixel data values above the detection threshold are accumulated (90) until a pixel data value falls below the detection threshold (92). A minimum number of pixel data values exceeding the threshold are required for each ray before the average of the accumulated values is processed and/or the median value is selected (94). When all pixels along a given ray have been tested, the projection is complete and the average or median projection is then displayed. Uniformity within the projected image and the sharpness of edges are enhanced by projecting average or median pixel values instead of maximum pixel values.

    摘要翻译: 通过使用收集电影存储器中的速度或功率数据以形成像素数据量的超声波扫描器来显示使用速度或功率多普勒数据的流动流体或运动组织的三维图像。 平均或中值像素值通过将光线投射到数据体积而在图像平面上投影(86)。 当光线通过每个扫描平面时,在该点将数据值分配给光线。 在每个扫描平面处,测试分配的像素数据值(88)以查看其是否超过噪声阈值。 对于给定的射线,高于检测阈值的像素数据值被累积(90)直到像素数据值低于检测阈值(92)。 在处理累积值的平均值和/或选择中值之前,每个射线需要超过阈值的最小数量的像素数据值(94)。 当已经测试了给定光线的所有像素时,投影完成,然后显示平均或中值投影。 通过投影平均值或中值像素值而不是最大像素值来增强投影图像内的均匀性和边缘的锐度。

    Medical digital ultrasonic imaging apparatus capable of storing and reusing radio-frequency (RF) ultrasound pulse echoes
    104.
    发明公开
    Medical digital ultrasonic imaging apparatus capable of storing and reusing radio-frequency (RF) ultrasound pulse echoes 有权
    Digitales medizinisches Ultraschall-Bilderzeugungsgerätmit Speicherung und Wiedergebrauch von RF Ultraschalimpulsechos

    公开(公告)号:EP1028324A2

    公开(公告)日:2000-08-16

    申请号:EP00300764.8

    申请日:2000-02-01

    申请人: MEDISON CO., LTD.

    IPC分类号: G01S15/89 G01S7/52

    摘要: A storing method of a RF ultrasound pulse echo and a medical digital ultrasonic imaging apparatus capable of re-using the stored RF ultrasound pulse echo store and focus each RF ultrasound pulse echo received from a plurality of transducer elements in order to implement an ultrasonic image of at least one frame. Then, the stored RF ultrasound pulse echoes are analyzed, to thereby control the system according to the analysis result, which results in implementation of an optimal ultrasonic image.

    摘要翻译: RF超声波脉冲回波的存储方法和能够重新使用所存储的RF超声波脉冲回波的医疗数字超声成像设备存储并聚焦从多个换能器元件接收的每个RF超声波脉冲回波,以实现 至少一帧。 然后,分析存储的RF超声脉冲回波,从而根据分析结果控制系统,从而实现最佳超声波图像。

    Variable compression of ultrasonic image data with depth and lateral scan dimensions
    105.
    发明公开
    Variable compression of ultrasonic image data with depth and lateral scan dimensions 失效
    的超声诊断成像系统具有数据压缩,作为深度和横向扫描的函数

    公开(公告)号:EP0843181A1

    公开(公告)日:1998-05-20

    申请号:EP97308855.2

    申请日:1997-11-04

    IPC分类号: G01S7/52

    摘要: An ultrasonic diagnostic imaging system processes echo information signals by means of a dynamic range map for displayed signals which is varied automatically throughout the image to control the displayed dynamic range and noise rejection level in regions of the image. In a preferred embodiment the displayed dynamic range and noise rejection level is varied with both the range (depth) and lateral (scanline to scanline) dimensions of an ultrasonic image.

    摘要翻译: 一种超声诊断成像系统处理由动态范围的地图为显示信号的手段回波信息信号的所有这是整个控制在图像的区域中的显示的动态范围和噪声抑制电平的图像自动地改变。 在优选实施例中显示的动态范围和噪声抑制水平与这两个范围(深度)和横向变化(扫描线来扫描线)的超声波图像的尺寸。

    Procédé et dispositif pour le traitement de signaux représentatifs d'ondes réfléchies ou transmises par une structure volumique en vue d'effectuer une exploration et une analyse de cette structure
    107.
    发明公开

    公开(公告)号:EP0825453A1

    公开(公告)日:1998-02-25

    申请号:EP97401409.4

    申请日:1997-06-19

    申请人: Dory, Jacques

    发明人: Dory, Jacques

    IPC分类号: G01S7/52

    摘要: Procédé pour le traitement de signaux représentatifs d'ondes réfléchies ou transmises par un objet (O), en vue d'effectuer une analyse de la structure de cet objet (O), ce procédé comprenant l'émission d'ondes incidentes dans ladite structure, la réception des ondes réfléchies ou transmises par les structures rencontrées par l'onde incidente à l'intérieur de l'objet (O), par une pluralité d'éléments de détection (D 1 , D n ) indépendants les uns des autres, la mémorisation après numérisation des informations reçues dans une mémoire de champ (MC), le calcul, pour chaque point (Pij) de l'objet (O), des positions occupées dans la mémoire de champ par les signaux détectés par les éléments (D 1 , D n ) à un instant donné et correspondant aux ondes réfléchies ou transmises par le point (Pij), puis l'application sur l'ensemble des informations contenues dans la mémoire de champ, relatives à chaque point (Pij), d'opérations dont le résultat (Vp) permet de connaître l'importance de l'onde réfléchie ou transmise par le point (Pij).

    摘要翻译: 该过程允许代表波反射或在为了执行上的对象的结构的分析通过反mitted到对象(O)处理的信号。 该方法包括通过使用多个检测元件(D1 - DN)的物体反射的波的结构和接收波入射传输彼此独立。 接收和数字化后的信息存储在一个场存储器(MC)。 对于对象(P IJ)的各点的计算被执行用于在场存储器用于在给定时刻由每个检测元件检测到的信号所占用的位置。 然后,该位置信息是施加到进一步的处理,其允许反射波的大小和形状的确定,以便确定矿对象的结构(O)。

    Ultrasonic diagnostic apparatus
    109.
    发明公开
    Ultrasonic diagnostic apparatus 失效
    超声波诊断设备

    公开(公告)号:EP0657747A1

    公开(公告)日:1995-06-14

    申请号:EP94309054.8

    申请日:1994-12-06

    IPC分类号: G01S7/52 G01S15/89

    摘要: Ultrasonic wave is emitted into an examined body. A first electric echo signal is generated in response to an echo of the ultrasonic wave. A controllable filter responsive to a control signal serves to extract components of the first electric echo signal which are in a desired frequency band, so that the first electric echo signal is converted into a second electric echo signal. A logarithmic detection device serves to subject the second electric echo signal to logarithmic compression and detection. A signal generator is operative for outputting plural calibration signals having different frequencies and different amplitudes. An input selection device is operative for connecting the signal generator with an input terminal of the filter during a calibration mode of operation. A control device is operative for calculating a corrective value from an output signal of the logarithmic detection device during the calibration mode of operation, and correcting a logarithmic conversion characteristic and an offset of the logarithmic detection device and the control signal to the filter in response to the calculated corrective value during reception of echoes of the ultrasonic wave.

    摘要翻译: 超声波被发射到被检查的身体中。 响应于超声波的回波产生第一电回波信号。 响应于控制信号的可控滤波器用于提取处于期望频带中的第一电回声信号的分量,使得第一电回声信号被转换为第二电回声信号。 对数检测装置用于对第二电回波信号进行对数压缩和检测。 信号发生器用于输出具有不同频率和不同幅度的多个校准信号。 输入选择装置用于在校准操作模式期间将信号发生器与滤波器的输入端子连接。 控制装置可操作用于在校准操作模式期间根据对数检测装置的输出信号计算校正值,并且响应于校准操作而校正对数检测装置的对数转换特性和偏移以及对滤波器的控制信号 在接收超声波的回波期间计算的校正值。

    INSPECTION APPARATUS.
    110.
    发明公开
    INSPECTION APPARATUS. 失效
    关于台洗衣机。

    公开(公告)号:EP0605720A4

    公开(公告)日:1995-01-25

    申请号:EP92917815

    申请日:1992-08-12

    申请人: DAIKIN IND LTD

    发明人: UEDA TOMOAKI

    摘要: Convolution calculation is executed on the basis of a calculation result from an impulse response calculation unit (10), (11), ... (1n) using a peak value of each pulse as a multiplier and an estimated value of an unknown impulse response as a multiplicand and using a transmission waveform as a pulse train, and the difference from a reception waveform is calculated by a difference calculation unit (3). Correction of the estimated impulse response is made at a correction unit (10a), (11a), ... (1na) of the impulse response calculation unit (10), (11), ... (1n) on the basis of the calculated difference, and the corrected impulse response is supplied to an input response calculation unit of a next stage. When these processings are executed, high resolution of inspection as well as real time processing can be accomplished, and moreover, the range of inspection can be expanded while keeping resolution at a high level.