公开(公告)号：WO2013082455A1

公开(公告)日：2013-06-06

申请号：PCT/US2012/067341

申请日：2012-11-30

Applicant: MAUI IMAGING, INC.

Inventor： SPECHT, Donald F. ,  BREWER, Kenneth D. ,  SMITH, David M. ,  CALL, Josef R. ,  LE, Viet Nam ,  RITZI, Bruce R.

IPC: A61B8/14 ,  G06T7/20

CPC classification number: A61B8/488 ,  A61B8/145 ,  A61B8/4444 ,  A61B8/4477 ,  A61B8/4488 ,  A61B8/461 ,  A61B8/463 ,  A61B8/5207 ,  A61B8/5223 ,  G01S7/52066 ,  G01S7/52071 ,  G01S15/8913 ,  G01S15/8927 ,  G01S15/8984

Abstract: A method of full-field or "ping-based" Doppler ultrasound imaging allows for detection of Doppler signals indicating moving reflectors at any point in an imaging field without the need to pre-define range gates. In various embodiments, such whole-field Doppler imaging methods may include transmitting a Doppler ping from a transmit aperture, receiving echoes of the Doppler ping with one or more separate receive apertures, detecting Doppler signals and determining the speed of moving reflectors. In some embodiments, the system also provides the ability to determine the direction of motion by solving a set of simultaneous equations based on echo data received by multiple receive apertures.

Abstract translation: 全场或“基于乒乓”的多普勒超声成像的方法允许在成像领域的任何点检测指示运动反射器的多普勒信号，而不需要预定义范围门。 在各种实施例中，这样的全场多普勒成像方法可以包括从发射孔径发射多普勒波，使用一个或多个分离的接收孔径接收多普勒脉冲的回波，检测多普勒信号并确定移动的反射器的速度。 在一些实施例中，系统还提供通过基于由多个接收孔径接收的回波数据求解一组联立方程来确定运动方向的能力。

公开(公告)号：WO2015038525A2

公开(公告)日：2015-03-19

申请号：PCT/US2014/054748

申请日：2014-09-09

Applicant: MAUI IMAGING, INC.

Inventor： SPECHT, Donald F. ,  CALL, Josef R.

CPC classification number: A61B8/4483 ,  A61B8/4461 ,  A61B8/483 ,  A61B8/5207 ,  G01S7/52077 ,  G01S7/52079 ,  G01S15/8913 ,  G01S15/8915 ,  G01S15/8929 ,  G01S15/8993 ,  G01S15/8995 ,  G01S15/8997

Abstract: An apparent point-source transmit transducers comprises a substantially constant- thickness shell of piezoelectric material in a shape of a spherical-section. Such transducers may be sized such that a single apparent point-source transmit transducer may produce ultrasound waveforms with substantial energy in a medium to be imaged. Use of such transducers in three- dimensional ping-based imaging may permit deeper and higher quality imaging than may be possible with conventional transducers.

Abstract translation: 表观点源发射换能器包括具有球形截面形状的基本恒定的压电材料壳。 这样的传感器的尺寸可以使得单个视在点源传输换能器可以在待成像的介质中产生具有相当大能量的超声波。 在三维基于ping的成像中使用这种换能器可以允许比常规换能器更可能更高质量的成像。