公开(公告)号：US6050946A

公开(公告)日：2000-04-18

申请号：US179490

申请日：1998-10-27

申请人： Tat-Jin Teo

发明人： Tat-Jin Teo

IPC分类号： A61B8/12 ,  G01S7/52 ,  G01S15/89 ,  A61B8/00

CPC分类号： G01S7/52036 ,  A61B8/12 ,  G01S15/895 ,  G01S15/8979 ,  G01S7/52046

摘要： Methods and apparatus for blood speckle detection for enhanced intravascular ultrasound imaging. The present invention utilizes the fact that the energy scattering strength from blood exhibits a high frequency dependency, while the scattering strength from tissue lacks a strong frequency dependency. In specific embodiments, the present invention may provide a particularly simple and useful solution for addressing the problem of blood speckle in intravascular ultrasound imaging, especially in situations where the blood may have a scattering strength similar to that of tissue and/or where the blood is moving slowly or not at all.

公开(公告)号：US5899861A

公开(公告)日：1999-05-04

申请号：US728280

申请日：1996-10-08

申请人： Barry H. Friemel ,  Lee Weng ,  Tat-Jin Teo ,  Katherine G. Brown

发明人： Barry H. Friemel ,  Lee Weng ,  Tat-Jin Teo ,  Katherine G. Brown

IPC分类号： A61B8/08 ,  G01S7/52 ,  G01S15/89 ,  G06T7/20 ,  A61B8/00

CPC分类号： G06K9/32 ,  A61B8/0866 ,  A61B8/4254 ,  A61B8/463 ,  A61B8/483 ,  G01S15/8993 ,  G01S7/5205 ,  G01S7/52074 ,  G06T7/2033 ,  A61B8/0833 ,  G01S15/8934 ,  G01S15/8977 ,  G01S7/52065 ,  G01S7/52068 ,  G01S7/52073 ,  G06K2009/2045 ,  Y10S128/916

摘要： A 3D field of view ultrasound image volume is derived from correlated frames of ultrasound image data. An operator manually translates an ultrasound probe across a patient target area. Frames of sensed echo signals are processed to detect probe motion using beam data registration and correlation techniques. Motion is detected by correlating the frames for probe translation among as many as 6 degrees of freedom. Image registration then is performed for correlated portions to accumulate a large ultrasound image. Such image encompasses an area larger than a single field of view image frame for the given manually-scanned transducer probe.

摘要翻译： 从超声图像数据的相关帧导出3D视野超声图像体积。 操作者手动地将超声波探头翻转到患者目标区域上。 使用波束数据配准和相关技术来处理检测到的回波信号的帧以检测探测器运动。 通过将多达6个自由度的探针转换的帧相关联来检测运动。 然后对相关部分执行图像配准以累积大的超声图像。 这种图像包括对于给定的手动扫描的换能器探头大于单个视场图像帧的区域。

公开(公告)号：US5876343A

公开(公告)日：1999-03-02

申请号：US936043

申请日：1997-09-23

申请人： Tat-Jin Teo

发明人： Tat-Jin Teo

IPC分类号： A61B8/12 ,  G01S7/52 ,  G01S15/89 ,  A61B8/00

CPC分类号： G01S7/52036 ,  A61B8/12 ,  G01S15/895 ,  G01S15/8979 ,  G01S7/52046

摘要： Methods and apparatus for blood speckle detection for enhanced intravascular ultrasound imaging. The present invention utilizes the fact that the energy scattering strength from blood exhibits a high frequency dependency, while the scattering strength from tissue lacks a strong frequency dependency. In specific embodiments, the present invention may provide a particularly simple and useful solution for addressing the problem of blood speckle in intravascular ultrasound imaging, especially in situations where the blood may have a scattering strength similar to that of tissue and/or where the blood is moving slowly or not at all.

公开(公告)号：US5655535A

公开(公告)日：1997-08-12

申请号：US622904

申请日：1996-03-29

申请人： Barry H. Friemel ,  Lee Weng ,  Tat-Jin Teo

发明人： Barry H. Friemel ,  Lee Weng ,  Tat-Jin Teo

IPC分类号： A61B8/08 ,  A61B8/14 ,  G01S7/52 ,  G01S15/89 ,  G06T7/20 ,  A61B8/00

CPC分类号： G01S7/52065 ,  A61B8/0866 ,  A61B8/14 ,  A61B8/4254 ,  A61B8/463 ,  A61B8/483 ,  G01S15/8993 ,  G06T7/2033 ,  A61B8/0833 ,  G01S7/52073 ,  Y10S128/916

摘要： A compounded field of view ultrasound image is derived from correlated frames of ultrasound image data. An operator manually translates an ultrasound probe across a patient target area. Frames of sensed echo signals are processed to detect probe motion without the use of a dedicated position sensor or motion sensor. Motion is detected by correlating the frames for probe translation among as many as 6 degrees of freedom. Image registration then is performed for correlated portions to compound a large ultrasound image. Such image encompasses an area larger than a single field of view image frame for the given manually-scanned transducer probe.

摘要翻译： 复合视场超声图像是从超声图像数据的相关帧中得出的。 操作者手动地将超声波探头翻转到患者目标区域上。 感测到的回波信号的帧被处理以检测探测器运动，而不使用专用位置传感器或运动传感器。 通过将多达6个自由度的探针转换的帧相关联来检测运动。 然后对相关部分执行图像配准以复合大型超声图像。 这种图像包括对于给定的手动扫描的换能器探头大于单个视场图像帧的区域。