公开(公告)号：US5738097A

公开(公告)日：1998-04-14

申请号：US745271

申请日：1996-11-08

申请人： Kirk Beach ,  Gerald J. McMorrow ,  William L. Barnard

发明人： Kirk Beach ,  Gerald J. McMorrow ,  William L. Barnard

IPC分类号： A61B8/06 ,  A61B8/00

CPC分类号： A61B8/06

摘要： A pulse Doppler system for determining blood flow velocity in a blood vessel in a body, in particular the carotid artery. A sample region covering a section of the artery is investigated, using two spaced transmitters, one with a frequency of 3 MHz and the other with a frequency of 4.5 MHz. The received echo beams are then processed to determine the component blood velocities for each frequency. The two component values are then resolved into a true blood flow velocity for the sample region. That information is used to produce a color-coded velocity map of the artery, which may be conveniently displayed to the operator.

摘要翻译： 一种用于确定身体，特别是颈动脉中的血管中的血流速度的脉冲多普勒系统。 使用两个间隔的发射器，一个频率为3MHz，另一个频率为4.5MHz的样本区域覆盖动脉的一部分。 然后处理接收到的回波束以确定每个频率的分量血速。 然后将两个组分值解析为样品区域的真实血流速度。 该信息用于产生动脉的颜色编码速度图，其可以方便地显示给操作者。