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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Maslak; Samuel H.
Address:
Woodside, CA
No. of patents:
53
Patents:


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Patent Number Title Of Patent Date Issued
7779531 MIcrofabricated ultrasonic transducers with curvature and method for making the same August 24, 2010
The present invention provides a microfabricated ultrasonic transducer with curvature. The curvature is made possible by thinning the substrate such that it is flexible enough to be mounted on an assembly with the desired curvature. In one aspect of the invention, the substrate can c
7332850 Microfabricated ultrasonic transducers with curvature and method for making the same February 19, 2008
The present invention provides a microfabricated ultrasonic transducers with curvature. The curvature is made possible by thinning the substrate such that it is flexible enough to be mounted on an assembly with the desired curvature. In one aspect of the invention, the substrate can
6755787 Medical diagnostic ultrasound system and method for versatile processing June 29, 2004
A method and system for reducing speckle for two and three-dimensional images is disclosed. For two-dimensional imaging, a one and a half or a two-dimensional transducer is used to obtain sequential, parallel or related frames of elevation spaced data. The frames are compounded to de
6626831 Gated ultrasound imaging apparatus and method September 30, 2003
An ultrasound imaging system is programmed to acquire first ultrasonic image frames intermittently. These first frames, typically triggered frames synchronized with a selected portion of an ECG cycle, are optimized for high image quality of a contrast agent included in the tissue. The
6554770 Medical diagnostic ultrasound imaging methods for extended field of view April 29, 2003
A medical diagnostic ultrasound imaging system aligns substantially co-planar two-dimensional images to form an extended field of view using improved compounding methods. Using variations in characteristics for each component frame or sub-set of data, the extended field of view image is
6511426 Medical diagnostic ultrasound system and method for versatile processing January 28, 2003
A method and system for reducing speckle for two and three-dimensional images is disclosed. For two-dimensional imaging, a one and a half or a two-dimensional transducer is used to obtain sequential, parallel or related frames of elevation spaced data. The frames are compounded to de
6494841 Medical diagnostic ultrasound system using contrast pulse sequence imaging December 17, 2002
A medical diagnostic ultrasound imaging method fires a sequence of pulses into a body and then receives, beamforms, weights and sums the resulting echo signals to suppress first order echoes. The sequence of pulses includes at least two pulses that differ in amplitude and phase. In one
6432055 Medical ultrasonic imaging system with three-state ultrasonic pulse and improved pulse generator August 13, 2002
A three-state, pulse width modulated, bipolar waveform is constructed by summing a first component with an inverted, time-shifted version of the first component. By properly selecting the time interval for the time shift of the second component, frequency filtering benefits can be ob
6360027 Multiple ultrasound image registration system, method and transducer March 19, 2002
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
6352511 Medical diagnostic ultrasound system and method for post processing March 5, 2002
Ultrasound data is generated by a receive beamformer. Ultrasound image processing is applied to the ultrasound data for presentation of an image. Various ones of the ultrasound image processing steps may be reversed. For example, persistence processing may be reversed in order to obtain
6340348 Contrast agent imaging with destruction pulses in diagnostic medical ultrasound January 22, 2002
The invention is directed to improvements in diagnostic medical ultrasound contrast agent imaging. In a preferred embodiment, high pulse repetition frequency (HPRF) destruction pulses are fired at a rate higher than necessary for receiving returning echoes. Pulse parameters can also be
6322511 Methods and apparatus for ultrasound image quantification November 27, 2001
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6322505 Medical diagnostic ultrasound system and method for post processing November 27, 2001
Ultrasound data is generated by a receive beamformer. Ultrasound image processing is applied to the ultrasound data for presentation of an image. Various ones of the ultrasound image processing steps may be reversed. For example, persistence processing may be reversed in order to obtain
6306095 Gated ultrasound imaging apparatus and method October 23, 2001
An ultrasound imaging system is programmed to acquire first ultrasonic image frames intermittently. These first frames, typically triggered frames synchronized with a selected portion of an ECG cycle, are optimized for high image quality of a contrast agent included in the tissue. The
6258029 Methods and apparatus for ultrasound image quantification July 10, 2001
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6241677 Method and apparatus for ultrasound image quantification June 5, 2001
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6222948 Multiple ultrasound image registration system, method and transducer April 24, 2001
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
6221018 Medical ultrasonic diagnostic imaging method and apparatus April 24, 2001
A medical diagnostic ultrasonic imaging method and system subdivide the transmit aperture into two or more subapertures, each subaperture having at least four adjacent transducer elements. The subapertures are phased differently with respect to one another to selectively reduce either
6201900 Multiple ultrasound image registration system, method and transducer March 13, 2001
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
6193664 Method and apparatus for ultrasound image quantification February 27, 2001
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6193659 Medical ultrasonic diagnostic imaging method and apparatus February 27, 2001
An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. The transmitting step includes the step of: app
6177923 Imaging modality showing energy and velocity January 23, 2001
Both the energy and velocity contents of received Doppler and time shift signals are simultaneously displayed. A continuous range of imaging modes are provided ranging from velocity imaging to energy imaging. The user may select the particular imaging mode desired for a particular clinic
6132376 Multiple ultrasonic image registration system, method and transducer October 17, 2000
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
6120448 Diagnostic medical ultrasonic imaging method and system for selectively processing harmonic and September 19, 2000
A diagnostic medical ultrasonic imaging method and system form first and second signals as a function of the Nth power of the absolute value of first and second ultrasound receive signals. These receive signals are associated with respective first and second transmit pulses that differ i
6117082 Medical diagnostic ultrasound imaging system and method with fractional harmonic seed signal September 12, 2000
Medical diagnostic ultrasonic imaging systems and methods image at a fractional harmonic such as f.sub.0 /2 or 3f.sub.0 /2, where f.sub.0 is the fundamental frequency of the associated transmit beam. In order to improve fractional harmonic imaging, the transmit beam includes a fracti
6110120 Gated ultrasound imaging apparatus and method August 29, 2000
An ultrasound imaging system is programmed to acquire first ultrasonic image frames intermittently. These first frames, typically triggered frames synchronized with a selected portion of an ECG cycle, are optimized for high image quality of a contrast agent included in the tissue. The
6110118 Method and apparatus for ultrasound image quantification August 29, 2000
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6102865 Multiple ultrasound image registration system, method and transducer August 15, 2000
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
6093149 Method and apparatus for setting the integration interval for time integrated surface integral i July 25, 2000
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6086539 Methods and apparatus for ultrasound image quantification July 11, 2000
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6042545 Medical diagnostic ultrasound system and method for transform ultrasound processing March 28, 2000
The preferred embodiment includes a method and system for processing ultrasound data during or after compression. Various compression algorithms, such as JPEG compression, are used to transfer ultrasound data. The ultrasound data may include image (i.e. video data) or data obtained p
6030344 Methods and apparatus for ultrasound image quantification February 29, 2000
A method and apparatus for quantifying and displaying ultrasound signals in an ultrasonic system are provided. A first signal value for each of at least one spatial location in a region of interest is acquired at a first time, and the signal values are summed to obtain a first surface in
6016285 Method and apparatus for coherent image formation January 18, 2000
A method and apparatus are provided for imaging an object using a transducer array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events so as to scan a field of view of the object, for sensing received signals ref
6014473 Multiple ultrasound image registration system, method and transducer January 11, 2000
An ultrasonic imaging system includes an ultrasonic transducer having an image data array and a tracking array at each end of the image data array. The tracking arrays are oriented transversely to the image data array. Images from the image data array are used to reconstruct a three-
5976090 Broadband phased array transducer design with frequency controlled two dimension capability and November 2, 1999
There is provided a transducer array with a plurality of piezoelectric elements having a minimum and maximum thickness. In one embodiment, the maximum thickness is less than or equal to 140 percent of the minimum thickness. In an alternate embodiment, the maximum thickness is greater
5957852 Ultrasonic harmonic imaging system and method September 28, 1999
The system described ultrasonically images a target with energy spreading transmissions. Generally, ultrasonic energy corresponding to a line focus is transmitted into a target at a fundamental center frequency. The target may or may not include contrast agents. In either case, echoes ar
5957845 Gated ultrasound imaging apparatus and method September 28, 1999
An ultrasound imaging system is programmed to acquire first ultrasonic image frames intermittently. These first frames, typically triggered frames synchronized with a selected portion of an ECG cycle, are optimized for high image quality of a contrast agent included in the tissue. The
5928151 Ultrasonic system and method for harmonic imaging in three dimensions July 27, 1999
An ultrasound method and system are provided for producing three dimensional images. During an imaging session, a transducer, in response to a transmit beamformer, transmits ultrasonic energy at a first frequency band into a subject. The subject may be kept free of added ultrasound c
5924991 Ultrasonic system and method for harmonic imaging in three dimensions July 20, 1999
An ultrasound method and system are provided for producing three dimensional images. During an imaging session, a transducer, in response to a transmit beamformer, transmits ultrasonic energy at a first frequency band into a subject. The subject may be kept free of added ultrasound c
5899864 Adaptive temporal filtering to enhance fluid flow or tissue motion imaging May 4, 1999
The energy, power or amplitude of Doppler or time shift information signals is compared to a threshold in order to select a large or small weighting factor for temporal persistence. In the event of a "flash" signal or strong arterial flow signal, a small weighting factor is chosen to red
5793701 Method and apparatus for coherent image formation August 11, 1998
A method and apparatus are provided for imaging an object using a transducer array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events so as to scan a field of view of the object, for sensing received signals ref
5743855 Broadband phased array transducer design with frequency controlled two dimension capability and April 28, 1998
There is provided a transducer array with a plurality of piezoelectric elements having a minimum and maximum thickness. In one embodiment, the maximum thickness is less than or equal to 140 percent of the minimum thickness. In an alternate embodiment, the maximum thickness is greater
5676147 Ultrasonic receive beamformer with phased sub-arrays October 14, 1997
An ultrasonic receive beamformer includes transducers forming receive signals that are applied to sub-array processors. Each sub-array processor includes at least one phase shifter and a summer, and each phase shifter is responsive to at least one of the transducer signals to shift the
5667373 Method and apparatus for coherent image formation September 16, 1997
A method and apparatus are provided for imaging an object using a transducer array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events so as to scan a field of view of the object, for sensing received signals ref
5623928 Method and apparatus for coherent image formation April 29, 1997
A method and apparatus are provided for imaging an object using a transducer array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events so as to scan a field of view of the object, for sensing received signals ref
5582177 Broadband phased array transducer design with frequency controlled two dimension capability and December 10, 1996
There is provided a transducer array with a plurality of piezoelectric elements having a minimum and maximum thickness. In one embodiment, the maximum thickness is less than or equal to 140 percent of the minimum thickness. In an alternate embodiment, the maximum thickness is greater
5573001 Ultrasonic receive beamformer with phased sub-arrays November 12, 1996
An ultrasonic receive beamformer includes transducers forming receive signals that are applied to sub-array processors. Each sub-array processor includes at least one phase shifter and a summer, and each phase shifter is responsive to at least one of the transducer signals to shift the
5570691 Method and apparatus for real-time, concurrent adaptive focusing in an ultrasound beamformer ima November 5, 1996
A method and an apparatus are provided for dynamic, real-time adaptive focusing for ultrasound imaging. Aberration delay correction values, corresponding to an aberration region in an imaged subject, are measured concurrently during B-mode imaging scan lines and updated at the scan line
5555534 Method and apparatus for doppler receive beamformer system September 10, 1996
An ultrasonic receive system includes two receive beamformers. A first receive beamformer is optimized for imaging modes such as B-mode and color Doppler flow imaging, and therefore has high spatial resolution and wide bandwidth, while the accompanying second receive beamformer has a wid
5549111 Method and apparatus for adjustable frequency scanning in ultrasound imaging August 27, 1996
Method for scanning a field of view using a scan format, wherein the carrier frequency of the imaging pulse is higher in the center of the field of view than at the edges. The frequency variation can be accomplished on transmit by modulating appropriately delayed programmable initial
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