公开(公告)号：US07513872B2

公开(公告)日：2009-04-07

申请号：US11250440

申请日：2005-10-17

申请人： Tatsuro Baba ,  Masami Takahashi ,  Masao Takimoto ,  Muneki Kataguchi ,  Takuya Sasaki ,  Yasuo Miyajima ,  Takanobu Uchibori ,  Tomio Nabatame ,  Toshiyuki Koinuma

发明人： Tatsuro Baba ,  Masami Takahashi ,  Masao Takimoto ,  Muneki Kataguchi ,  Takuya Sasaki ,  Yasuo Miyajima ,  Takanobu Uchibori ,  Tomio Nabatame ,  Toshiyuki Koinuma

IPC分类号： A61B8/00

CPC分类号： A61B8/06 ,  A61B8/13 ,  A61B8/488

摘要： A Doppler sensitivity measuring unit measures the Doppler sensitivity of Doppler spectrum data obtained by ultrasonic wave transmission/reception with respect to a predetermined region of an object to be examined. A spectrum shape model generating unit generates a spectrum shape model on the basis of a window function used when the above Doppler spectrum data is generated. A threshold setting unit sets a threshold range in which trace waveform data displaces by a predetermined amount in the frequency axis direction on the basis of the spectrum shape model and the Doppler sensitivity, and sets a predetermined number of thresholds at almost equal intervals in the threshold range. A trace data generating unit selects a threshold for the acquisition of desired trace waveform data by generating trace waveform data while sequentially updating the plurality of set thresholds.

摘要翻译： 多普勒灵敏度测量单元测量通过超声波发送/接收相对于待检查对象的预定区域获得的多普勒频谱数据的多普勒灵敏度。 频谱形状模型生成单元基于在生成上述多普勒频谱数据时使用的窗口函数来生成频谱形状模型。 阈值设定单元基于频谱形状模型和多普勒灵敏度，设定轨迹波形数据在频率轴方向上移位预定量的阈值范围，并以阈值为基准等间隔设定规定数量的阈值 范围。 轨迹数据生成单元通过在顺序地更新多个设定阈值的同时产生轨迹波形数据来选择采集期望轨迹波形数据的阈值。