Elsayed H Attia

7399279, Jul 15, 2008

Apr 23, 2004

10/831547

Kenneth Abend - Huntingdon Valley PA, US
Elsayed H. Attia - Plymouth Meeting PA, US

Physiosonics, Inc - Seattle WA

A61B 8/00

600450, 600459

Provided herein is a method for use in medical applications that permits (1) affordable three-dimensional imaging of blood flow using a low-profile easily-attached transducer pad, (2) real-time blood-flow vector velocity, and (3) long-term unattended Doppler-ultrasound monitoring in spite of motion of the patient or pad. The pad and associated processor collects and Doppler processes ultrasound blood velocity data in a three dimensional region through the use of a planar phased array of piezoelectric elements. The invention locks onto and tracks the points in three-dimensional space that produce the locally maximum blood velocity signals. The integrated coordinates of points acquired by the accurate tracking process is used to form a three-dimensional map of blood vessels and provide a display that can be used to select multiple points of interest for expanded data collection and for long term continuous and unattended blood flow monitoring. The three dimensional map allows for the calculation of vector velocity from measured radial Doppler. A thinned array (greater than half-wavelength element spacing of the transducer array) is used to make a device of the present invention inexpensive and allow the pad to have a low profile (fewer connecting cables for a given spatial resolution).

7534209, May 19, 2009

Dec 20, 2002

10/327265

Kenneth Abend - Huntingdon Valley PA, US
Elsayed Hesham Attia - Plymouth Meeting PA, US

PhysioSonics, Inc. - Seattle WA

A61B 8/06

600454

Provided herein is a method for use in medical applications that permits affordable three-dimensional imaging of blood flow using a low-profile easily-attached transducer pad, real-time blood-flow vector velocity, and long-term unattended Doppler-ultrasound monitoring in spite of motion of the patient or pad. The pad and associated processor collects and Doppler processes ultrasound blood velocity data in a three dimensional region through the use of a planar phased array of piezoelectric elements. The invention locks onto and tracks the points in three-dimensional space that produce the locally maximum blood velocity signals. The integrated coordinates of points acquired by the accurate tracking process is used to form a three-dimensional map of blood vessels and provide a display that can be used to select multiple points of interest for expanded data collection and for long term continuous and unattended blood flow monitoring. The three dimensional map allows for the calculation of vector velocity from measured radial Doppler.

20080269609, Oct 30, 2008

Jul 10, 2008

12/171008

Kenneth Abend - Huntingdon Valley PA, US
Elsayed H. Attia - Plymouth Meeting PA, US

PhysioSonics, Inc. - Seattle WA

A61B 8/06

600440, 600454

Provided herein is a method for use in medical applications that permits (1) affordable three-dimensional imaging of blood flow using a low-profile easily-attached transducer pad, (2) real-time blood-flow vector velocity, and (3) long-term unattended Doppler-ultrasound monitoring in spite of motion of the patient or pad. The pad and associated processor collects and Doppler processes ultrasound blood velocity data in a three dimensional region through the use of a planar phased array of piezoelectric elements. The invention locks onto and tracks the points in three-dimensional space that produce the locally maximum blood velocity signals. The integrated coordinates of points acquired by the accurate tracking process is used to form a three-dimensional map of blood vessels and provide a display that can be used to select multiple points of interest for expanded data collection and for long term continuous and unattended blood flow monitoring. The three dimensional map allows for the calculation of vector velocity from measured radial Doppler.A thinned array (greater than half-wavelength element spacing of the transducer array) is used to make a device of the present invention inexpensive and allow the pad to have a low profile (fewer connecting cables for a given spatial resolution). The full aperture is used for transmit and receive so that there is no loss of sensitivity (signal-to-noise ratio) or dynamic range. Utilizing more elements (extending the physical array) without increasing the number of active elements increases the angular field of view. A further increase is obtained by utilizing a convex non-planar surface.

6682483, Jan 27, 2004

Mar 20, 2002

09/926666

Kenneth Abend - Huntington Valley PA
Elsayed H. Attia - Plymouth Meeting PA

VueSonix Sensors, Inc. - Wayne PA

A61B 800

600437, 600443, 128916

A method and device are provided for use in medical applications that permit affordable 3D imaging of blood flow using a low profile easily long-term unattended Doppler ultrasound monitoring in spite of motion of the patient or pad. The pad, and associated processor collects, Doppler processes ultrasound blood velocity data in a 3D region through the use of a planar phased array of piezoelectric elements. The invention locks onto, and tracks the points in 3D space that produce the locally maximum blood velocity signals. The integrated coordinates of points acquired by the accurate tracking process is used to form a 3D map of blood vessels, provide a display that can be used to select multiple points of interest for expanded data collection, for long-term continuous, and unattended blood flow monitoring.