Patents by Inventor Kutay F. Ustuner

Kutay F. Ustuner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7887486
    Abstract: Adaptive grating lobe suppression is provided. Received ultrasound data is measured, compared or otherwise processed to determine the presence of grating lobe energy. A further process is then altered as a function of the level of grating lobe energy. In one embodiment, the adaptive grating lobe suppression is implemented in the receive beamformer. Data representing a virtual element is formed as a normalized sum of data from adjacent sparse elements. The data from the adjacent elements is correlated to determine the presence of grating lobe energy as a function of the amount of shift associated with the peak correlation. A phase shift is applied to the data representing the virtual element where sufficient grating lobe energy is determined. In another embodiment, an amount of grating lobe energy is measured by comparing data from prior to a filter with filtered data. The filter is selected to isolate main lobe energy from grating lobe energy.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: February 15, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Kutay F. Ustuner, Albert Gee
  • Publication number: 20110005322
    Abstract: Depth ambiguity artifact is addressed. The pulse repetition interval is periodically varied. This jitter in the interval causes variance in the artifact while maintaining actual tissue or signal. The variation of the artifact may be visually detected or automatically detected and reduced, such as by removal. By removing the information associated with the variation of the artifact, the constant or maintained information may be presented with fewer artifacts. The variation may result in greater blurring of the artifact thereby reducing the artifact.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 13, 2011
    Inventor: Kutay F. Ustuner
  • Publication number: 20100310143
    Abstract: Image enhancement is provided in ultrasound imaging. A filter bank is used to process the data. The data may be processed in parallel. Each filter outputs data representing a same location, but with a kernel path (e.g., line, curved line, area, curved surface, or volume) different than for the other filters. For example, three filters filter along respective orthogonal planes. The filters may use preselected or data independent paths. The output of the filter bank is determined from the outputs of the filters in the bank, such as by selecting the maximum value. This bank-based filtering may enhance data associated with anatomical surfaces or contours and/or may reduce speckle. The parallel operation of the filters may allow for more rapid processing and/or processing a greater amount of data as compared to using a single filter.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 9, 2010
    Inventors: Bimba S. Rao, Ismayil M. Guracar, Kutay F. Ustuner
  • Patent number: 7764818
    Abstract: The depth buffer of a GPU is used to derive a surface normal or other surface parameter, avoiding or limiting computation of spatial gradients in 3D data sets and extra loading of data into the GPU. The surface parameter is used: to add shading with lighting to volume renderings of ultrasound data in real time, to angle correct velocity estimates, to adapt filtering or to correct for insonifying-angle dependent gain and compression. For border detection and segmentation, intersections with a volume oriented as a function of target structure, such as cylinders oriented relative to a vessel, are used for rendering. The intersections identify data for loading into the frame buffer for rendering.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: July 27, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Thilaka S. Sumanaweera, Kutay F. Ustuner
  • Patent number: 7744532
    Abstract: Ultrasound imaging adapts as a function of a coherence factor. Various beamforming, image forming or image processing parameters are varied as a function of a coherence factor to improve detail resolution, contrast resolution, dynamic range or SNR. For example, a beamforming parameter such as the transmit or receive aperture size, apodization type or delay is selected to provide maximum coherence. Alternatively or additionally, an image forming parameter, such as the number of beams for coherent synthesis or incoherent compounding, is set as a function of the coherence factor. Alternatively or additionally an image processing parameter such as the dynamic range, linear or nonlinear video filter and/or linear or nonlinear map may also adapt as a function of the coherence factor.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: June 29, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Kutay F. Ustuner, Pai-Chi Li, Meng-Lin Li, Tom L. Thomas, Albert Gee
  • Patent number: 7682311
    Abstract: Phase unwrapping is applied to velocity data to remove aliasing artifacts. Phase unwrapping is applied on multidimensional regions of velocity data. The unwrapped velocity image is displayed. The displayed image may have high sensitivity to slow motion but may also avoid aliasing of fast motion despite being undersampled.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: March 23, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Constantine Simopoulos, Kutay F. Ustuner
  • Publication number: 20100022884
    Abstract: Spatially distinct Spectral Doppler information is displayed. A spectrum is determined for each of a plurality of spatial locations, such as associated with different receive beams. Given a plurality of spectra at different spatial locations, an image may be generated as a function of the spectra. For example, a two-dimensional image has display values for different pixels or locations derived from one or more characteristics of the spectra, such as the maximum velocity with energy above a threshold for each location. As another example, the spectrum from the set of spectra with the highest maximum velocity is selected for generating a spectral strip display.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 28, 2010
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Kutay F. Ustuner, Paul D. Freiburger, Seshadri Srinivasan, Steve Henderson
  • Publication number: 20090306512
    Abstract: Retrospective dynamic transmit beamformation is provided in medical ultrasound imaging. Using parallel receive beamformation, sets of data representing locations in at least a common field of view are obtained, each set in response to a transmit with a spatially distinct phase front. The common field of view receive data are time aligned and amplitude weighted for retrospective transmit focusing and retrospective transmit apodization, respectively. A time offset, such as of a cycle or more in some cases, is applied to the receive data for retrospective transmit focusing. The offset is selected to emulate shifting the transmit delay profile to be tangentially intersecting with the dynamic receive delay profile for each location which is the desired transmit delay profile. A weight is applied to the receive data for retrospective transmit apodization. The weight is selected based on the desired transmit apodization profile.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 10, 2009
    Inventors: Rickard C. Loftman, Kutay F. Ustuner, Charles E. Bradley
  • Publication number: 20090306513
    Abstract: A volumetric method for 2-D flow imaging is provided in medical diagnostic ultrasound. Flow data for a volume is acquired. For more rapid acquisition, broad beam transmission and reception along many scan lines distributed in the volume is used. The volumetric flow data is filtered, such as by calculating statistical information, to generate a planar/2-D flow image. The statistical information from the three-dimensional flow data is used to determine the display values for the flow imaging.
    Type: Application
    Filed: April 10, 2009
    Publication date: December 10, 2009
    Inventors: Seshadri Srinivasan, Kutay F. Ustuner, Ismayil M. Guracar
  • Publication number: 20090062651
    Abstract: A medical imaging system automatically acquires two-dimensional images representing a user-defined region of interest despite motion. The plane of acquisition is updated or altered adaptively as a function of detected motion. The user-designated region of interest is then continually scanned due to the alteration in scan plane position. A multi-dimensional array is used to stabilize imaging of a region of interest in a three-dimensional volume. The user defines a region of interest for two-dimensional imaging. Motion is then detected. The position of a scan plane used to generate a subsequent two-dimensional image is then oriented as a function of the detected motion within the three-dimensional volume. By repeating the motion determination and adaptive alteration of the scan plane position, real time imaging of a same region of interest is provided while minimizing the region of interest fading into or out of the sequence of images.
    Type: Application
    Filed: September 29, 2008
    Publication date: March 5, 2009
    Inventors: James E. Chomas, Kutay F. Ustuner, Thilaka S. Sumanaweera
  • Publication number: 20090054779
    Abstract: A medical imaging system automatically acquires two-dimensional images representing a user-defined region of interest despite motion. The plane of acquisition is updated or altered adaptively as a function of detected motion. The user-designated region of interest is then continually scanned due to the alteration in scan plane position. A multi-dimensional array is used to stabilize imaging of a region of interest in a three-dimensional volume. The user defines a region of interest for two-dimensional imaging. Motion is then detected. The position of a scan plane used to generate a subsequent two-dimensional image is then oriented as a function of the detected motion within the three-dimensional volume. By repeating the motion determination and adaptive alteration of the scan plane position, real time imaging of a same region of interest is provided while minimizing the region of interest fading into or out of the sequence of images.
    Type: Application
    Filed: September 29, 2008
    Publication date: February 26, 2009
    Inventors: James E. Chomas, Kutay F. Ustuner, Thilaka S. Sumanaweera
  • Publication number: 20090030316
    Abstract: A medical imaging system automatically acquires two-dimensional images representing a user-defined region of interest despite motion. The plane of acquisition is updated or altered adaptively as a function of detected motion. The user-designated region of interest is then continually scanned due to the alteration in scan plane position. A multi-dimensional array is used to stabilize imaging of a region of interest in a three-dimensional volume. The user defines a region of interest for two-dimensional imaging. Motion is then detected. The position of a scan plane used to generate a subsequent two-dimensional image is then oriented as a function of the detected motion within the three-dimensional volume. By repeating the motion determination and adaptive alteration of the scan plane position, real time imaging of a same region of interest is provided while minimizing the region of interest fading into or out of the sequence of images.
    Type: Application
    Filed: September 29, 2008
    Publication date: January 29, 2009
    Inventors: James E. Chomas, Kutay F. Ustuner, Thilaka S. Sumanaweera
  • Publication number: 20080042519
    Abstract: A multi-layer transducer operates with only one system channel per element. Passive switching connects the layers differently for transmit than for receive operation, such as connecting two layers in parallel for transmit and in series for receive. Any passive switching may be used, such as current and voltage limiting circuits. Tuning may be passively switched. Different tuning circuits are passively switched as a function of voltage level between transmit and receive operations.
    Type: Application
    Filed: August 16, 2006
    Publication date: February 21, 2008
    Inventors: John Douglas Marshall, Jian-Hua Mo, Kutay F. Ustuner
  • Patent number: 7207942
    Abstract: Adaptive grating lobe suppression is provided. Received ultrasound data is measured, compared or otherwise processed to determine the presence of grating lobe energy. A further process is then altered as a function of the level of grating lobe energy. In one embodiment, the adaptive grating lobe suppression is implemented in the receive beamformer. Data representing a virtual element is formed as a normalized sum of data from adjacent sparse elements. The data from the adjacent elements is correlated to determine the presence of grating lobe energy as a function of the amount of shift associated with the peak correlation. A phase shift is applied to the data representing the virtual element where sufficient grating lobe energy is determined. In another embodiment, an amount of grating lobe energy is measured by comparing data from prior to a filter with filtered data. The filter is selected to isolate main lobe energy from grating lobe energy.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: April 24, 2007
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Kutay F. Ustuner, Albert Gee
  • Patent number: 7074186
    Abstract: Transmit based axial whitening is provided. Ultrasonic waveforms to be transmitted are designed to provide for wideband imaging characteristics prior to detection. Rather than transmitting a waveform having a spectral magnitude as white or flat as possible, waveforms with adjusted spectral content, such as spectrally bi-modal waveforms are generated in order to compensate for subsequent effects. Prior to detection, a more wideband or whiter signal response is provided in response to the transmitted waveform. Any of various alterations of the transmit waveform, such as asymmetric, spectrally bi-modal or other characteristics in anticipation of a system transfer function or physical phenomena through which the signal passes electronically or acoustically to result in a wideband or white spectral magnitude and generally linear spectral phase is used. The transmit waveform is altered to improve the imaging characteristics of the downstream processing.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: July 11, 2006
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Rickard C. Loftman, Karen E. Morgan, Erkan Mumcuoglu, Kutay F. Ustuner, Zoran Banjanin
  • Patent number: 6858008
    Abstract: Methods and systems for automatic adjustment of the transmit power are provided. Excess transmit power is determined as a function of the difference between a noise level and the lower end of the dynamic range of the system as configured. Based on the excess transmit power, the transmit power is reduced from the regulated maximum default settings to about a minimum while substantially preserving the original display image. This minimizes the acoustic energy delivered to the transducer and the body, thus reducing transducer heating and satisfying the FDA's ALARA principle.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: February 22, 2005
    Assignee: Acuson Corporation
    Inventors: Andrew Li, Kutay F. Ustuner
  • Patent number: 6780152
    Abstract: Images of the heart are formed by using multiple sets of ultrasound data. Each set of data is acquired and processed responsive to a different set of imaging parameters. The imaging parameter sets differ in at least one parameter, such as array position, temporal frequency response or transmit focal depth, so that the images formed using these data sets have, either laterally or axially, different spatial spectra. A set of images is formed responsive to a first imaging parameter set for a first cardiac cycle. Another set of images is formed responsive to a second imaging parameter set for a second cardiac cycle. The two sets of images are temporally aligned so that they correspond to the same set of phases of the cardiac cycle. Since the data acquisition and processing are distributed over multiple cycles of the motion, assuming regular periodic heart cycle, temporal resolution is maintained.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: August 24, 2004
    Assignee: Acuson Corporation
    Inventors: Kutay F. Üstüner, Thilaka S. Sumanaweera, Sevig Ayter, Kenneth M. Fowkes, John A. Hossack, John W. Allison
  • Publication number: 20040114325
    Abstract: A cooling device for an electric or electronic apparatus includes an inhaling member formed to draw in air and then discharge the air heated by heat generated from a component of the electric or electronic apparatus, an exhausting member communicating with the inhaling member and formed to receive the heated air discharged from the inhaling member, a fan provided adjacent to the exhausting member to forcibly draw in the air from the exhausting member, and a heat exchanger absorbing the heat from the air discharged from the fan and discharging the heat through a body casing of the electric or electronic apparatus. The cooling device for the electric or electronic apparatus has a high cooling efficiency, reduces noise, and prevents an inflow of dust.
    Type: Application
    Filed: October 21, 2003
    Publication date: June 17, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Rickard C. Loftman, Karen E. Morgan, Erkan Mumcuoglu, Kutay F. Ustuner, Zoran Banjanin
  • Patent number: 6749570
    Abstract: A method and apparatus for ultrasound breast imaging is described. Breast is positioned in between an ultrasound array and a plate with embedded point or line targets. The apparatus and reflections from the targets are used 1) to improve focusing by correcting for tissue delay and amplitude aberration and 2) to improve diagnostics by constructing speed of sound and attenuation coefficient images.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: June 15, 2004
    Assignee: Acuson Corporation
    Inventors: Kutay F. Üstüner, D-L Donald Liu, Thilaka S. Sumanaweera
  • Publication number: 20040039285
    Abstract: A method and apparatus for ultrasound breast imaging is described. Breast is positioned in between an ultrasound array and a plate with embedded point or line targets. The apparatus and reflections from the targets are used 1) to improve focusing by correcting for tissue delay and amplitude aberration and 2) to improve diagnostics by constructing speed of sound and attenuation coefficient images.
    Type: Application
    Filed: August 23, 2002
    Publication date: February 26, 2004
    Applicant: Acuson, A Siemens Company.
    Inventors: Kutay F. Ustuner, D-L Donald Liu, Thilaka S. Sumanaweera