Patents by Inventor Ulf Peter Gustafsson

Ulf Peter Gustafsson 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: 10716515
    Abstract: In some embodiments, a motion detection and correction system and/or device for tracking and compensating for patient motion during a medical imaging scan can be adapted to be integrated into a medical imaging scanner, such as an MRI scanner, or be adapted to retrofit a pre-existing medical imaging scanner. In certain embodiments, the motion detection system and/or device can comprise one or more mounting brackets and a motion correction device housing, which can further comprise one or more detector modules and a power unit. In further embodiments, the collected motion data can be further analyzed by an image processing unit of the motion tracking and/or correction system.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: July 21, 2020
    Assignee: Kineticor, Inc.
    Inventors: Ulf Peter Gustafsson, Andreas Wilhelm Dreher
  • Publication number: 20170143271
    Abstract: In some embodiments, a motion detection and correction system and/or device for tracking and compensating for patient motion during a medical imaging scan can be adapted to be integrated into a medical imaging scanner, such as an MRI scanner, or be adapted to retrofit a pre-existing medical imaging scanner. In certain embodiments, the motion detection system and/or device can comprise one or more mounting brackets and a motion correction device housing, which can further comprise one or more detector modules and a power unit. In further embodiments, the collected motion data can be further analyzed by an image processing unit of the motion tracking and/or correction system.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 25, 2017
    Inventors: Ulf Peter Gustafsson, Andreas Wilhelm Dreher
  • Patent number: 8532750
    Abstract: A process for determining whether tissue is precancer, in which tests discriminating between precancer and benign tissue and between precancer and normal tissue are combined, and tissue that is classified as precancer in both tests is determined to be precancer, in which neither of the tests to be combined is the most selective. Further, a process and device in which certain optimal wavelengths of glycogen, phosphate and lipid, but not protein, discriminate between normal and precancer tissues.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: September 10, 2013
    Assignee: STI Medical Systems, LLC
    Inventors: John Taylor Hargrove, Rolf Holger Wolters, Ulf Peter Gustafsson
  • Patent number: 8501435
    Abstract: A process for maintaining 3 dimensional orientation between a tissue specimen and images of the area of investigation, to register histopathologic diagnoses of multiple locations within the specimen with corresponding locations on the surface of said area of investigation.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 6, 2013
    Assignee: STI Medical Systems, LLC
    Inventors: Ulf Peter Gustafsson, Jody C. Oyama, Sara Maria Bergsten, Andrew Beaumont Whitesell, Richard W. Lieberman, Michael Paul Eldred
  • Patent number: 8503747
    Abstract: The present invention is an automated image analysis framework for cervical cancerous lesion detection. The present invention uses domain-specific diagnostic features in a probabilistic manner using conditional random fields. In addition, the present invention discloses a novel window-based performance assessment scheme for two-dimensional image analysis, which addresses the intrinsic problem of image misalignment. As a domain-specific anatomical feature, image regions corresponding to different tissue types are extracted from cervical images taken before and after the application of acetic acid during a clinical exam. The unique optical properties of each tissue type and the diagnostic relationships between neighboring regions are incorporated in the conditional random field model. The output provides information about both the tissue severity and the location of cancerous tissue in an image.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: August 6, 2013
    Assignee: STI Medical Systems, LLC
    Inventors: Sun Young Park, Dustin Sargent, Ulf Peter Gustafsson
  • Publication number: 20120283574
    Abstract: The present invention is a diagnosis support system providing automated guidance to a user by automated retrieval of similar disease images and user feedback. High resolution standardized labeled and unlabeled, annotated and non-annotated images of diseased tissue in a database are clustered, preferably with expert feedback. An image retrieval application automatically computes image signatures for a query image and a representative image from each cluster, by segmenting the images into regions and extracting image features in the regions to produce feature vectors, and then comparing the feature vectors using a similarity measure. Preferably the features of the image signatures are extended beyond shape, color and texture of regions, by features specific to the disease. Optionally, the most discriminative features are used in creating the image signatures. A list of the most similar images is returned in response to a query. Keyword query is also supported.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 8, 2012
    Inventors: Sun Young Park, Dustin Michael Sargent, Rolf Holger Wolters, Ulf Peter Gustafsson
  • Patent number: 8289378
    Abstract: This invention uses LEDs and cross-polarization to produce bright, high-resolution digital images, both with and without glint (which adversely affects the clarity of standard colposcopic images), as well as streaming video at lower resolution. The invention allows for deeper layers of the tissue to be more efficiently visualized at multiple magnifications, thereby enhancing the invention's diagnostic capabilities, and it includes a focusing subsystem and a computerized data management system to archive and annotate still image data.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: October 16, 2012
    Assignee: STI Medical Systems, LLC
    Inventors: Marcelo Esteban Soto-Thompson, Andrew Beaumont Whitesell, Ulf Peter Gustafsson
  • Patent number: 8090177
    Abstract: The present invention discloses a method for the detection of atypical vessels in digital cervical imagery. A pre-processing stage is applied to enhance the contrast of blood vessel features compared to the surrounding tissue. Next, a segmentation stage is applied to identify regions of interest for atypical vessels using texture and gradient information. Finally, a post-processing stage (1) identifies other clinically relevant features in the cervical imager, and removes these features from the region of interest; and (2) uses color, size, and shape information to further refine the region of interest to eliminate false positives and determine a final region of interest. This automated method of atypical vessel detection is especially useful for diagnostic purposes such as cervical cancer detection.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: January 3, 2012
    Assignee: STI Medical Systems, LLC
    Inventors: Sankar Venkataraman, Wenjing Li, Ulf Peter Gustafsson
  • Publication number: 20110301447
    Abstract: A process and device for detecting colon cancer by classifying and annotating clinical features in video data containing colonoscopic features by applying a probabilistic analysis to intra-frame and inter-frame relationships between colonoscopic features in spatially and temporally neighboring portions of video frames, and classifying and annotating as clinical features any of the colonoscopic features that satisfy the probabilistic analysis as clinical features. Preferably the probabilistic analysis is Hidden Markove Model analysis, and the process is carried out by a computer trained using semi supervised learning from labeled and unlabeled examples of clinical features in video containing colonoscopic features.
    Type: Application
    Filed: June 7, 2011
    Publication date: December 8, 2011
    Inventors: Sun Young Park, Dustin Sargent, Ulf Peter Gustafsson, Wenjing Li, Rolf Wolters, Stephen D. Fleischer
  • Publication number: 20110274338
    Abstract: The present invention is an automated image analysis framework for cervical cancerous lesion detection. The present invention uses domain-specific diagnostic features in a probabilistic manner using conditional random fields. In addition, the present invention discloses a novel window-based performance assessment scheme for two-dimensional image analysis, which addresses the intrinsic problem of image misalignment. As a domain-specific anatomical feature, image regions corresponding to different tissue types are extracted from cervical images taken before and after the application of acetic acid during a clinical exam. The unique optical properties of each tissue type and the diagnostic relationships between neighboring regions are incorporated in the conditional random field model. The output provides information about both the tissue severity and the location of cancerous tissue in an image.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 10, 2011
    Inventors: Sun Young Park, Dustin Sargent, Ulf Peter Gustafsson
  • Patent number: 7791008
    Abstract: The present invention discloses methods and systems for improved focusing of imaging systems for the acquisition of high-quality focused tissue image data. A light emitter (L) aims a focusing light beam (FLB) towards an object of interest (O) so that the focusing light beam (FLB) is at an angle relative to the optical axis (OA) of the imager (I). If the object of interest (O) is out of focus, the focusing light spot (FLS) will appear above or below the focal point in the image (I). The pixel difference between the center of the focusing light spot (FLS) and the focal point indicates the range adjustment value. The range between the imager (I) and the object of interest (O) can then be adjusted according to the range adjustment value using a lookup table or calculations.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: September 7, 2010
    Inventors: John Taylor Hargrove, Ulf Peter Gustafsson
  • Publication number: 20100130868
    Abstract: A process for determining whether tissue is precancer, in which tests discriminating between precancer and benign tissue and between precancer and normal tissue are combined, and tissue that is classified as precancer in both tests is determined to be precancer, in which neither of the tests to be combined is the most selective. Further, a process and device in which certain optimal wavelengths of glycogen, phosphate and lipid, but not protein, discriminate between normal and precancer tissues.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 27, 2010
    Inventors: John Taylor Hargrove, Rolf Holger Wolters, Ulf Peter Gustafsson
  • Publication number: 20100093023
    Abstract: A process for maintaining 3 dimensional orientation between a tissue specimen and images of the area of investigation, to register histopathologic diagnoses of multiple locations within the specimen with corresponding locations on the surface of said area of investigation, by marking at least two fiduciary lines on the area of investigation; acquiring a fiduciary image of the tissue with the fiduciary lines; excising the tissue to form a tissue specimen; inserting at least two parallel needles through said specimen; acquiring a specimen image of the specimen with inserted needles over an alignment grid; fixing the specimen by immersing the specimen; acquiring a fixed image of the fixed specimen with the inserted needles over the alignment grid; forming a paraffin mold containing the fixed specimen and inserted needles; injecting different colored inks through the needles while withdrawing them from the fixed specimen, so that different colored needle tracks are formed in the specimen; sectioning the specimen
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Inventors: Ulf Peter Gustafsson, Jody C. Oyama
  • Publication number: 20100025566
    Abstract: The present invention discloses methods and systems for improved focusing of imaging systems for the acquisition of high-quality focused tissue image data. A light emitter (L) aims a focusing light beam (FLB) towards an object of interest (O) so that the focusing light beam (FLB) is at an angle relative to the optical axis (OA) of the imager (I). If the object of interest (O) is out of focus, the focusing light spot (FLS) will appear above or below the focal point in the image (I). The pixel difference between the center of the focusing light spot (FLS) and the focal point indicates the range adjustment value. The range between the imager (I) and the object of interest (O) can then be adjusted according to the range adjustment value using a lookup table or calculations.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: John Taylor Hargrove, Ulf Peter Gustafsson
  • Publication number: 20100026785
    Abstract: This invention uses LEDs and cross-polarization to produce bright, high-resolution digital images, both with and without glint (which adversely affects the clarity of standard colposcopic images), as well as streaming video at lower resolution. The invention allows for deeper layers of the tissue to be more efficiently visualized at multiple magnifications, thereby enhancing the invention's diagnostic capabilities, and it includes a focusing subsystem and a computerized data management system to archive and annotate still image data.
    Type: Application
    Filed: November 14, 2008
    Publication date: February 4, 2010
    Inventors: Marcelo Esteban Soto-Thompson, Andrew Beaumont Whitesell, Ulf Peter Gustafsson
  • Publication number: 20100027863
    Abstract: The present invention discloses a method for the detection of atypical vessels in digital cervical imagery. A pre-processing stage is applied to enhance the contrast of blood vessel features compared to the surrounding tissue. Next, a segmentation stage is applied to identify regions of interest for atypical vessels using texture and gradient information. Finally, a post-processing stage (1) identifies other clinically relevant features in the cervical imager, and removes these features from the region of interest; and (2) uses color, size, and shape information to further refine the region of interest to eliminate false positives and determine a final region of interest. This automated method of atypical vessel detection is especially useful for diagnostic purposes such as cervical cancer detection.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 4, 2010
    Inventors: Sankar Venkataraman, Wenjing Li, Ulf Peter Gustafsson
  • Patent number: 7181055
    Abstract: The image registration systems and methods according to this invention register reflectance and fluorescence hyperspectral imagery and provide the spatial image transformation between the reflectance and fluorescence hyperspectral imagery. A reflectance image is embedded into the fluorescence hyperspectral imagery and thereby resolves the resemblance problem of reflectance and fluorescence hyperspectral imagery. The reflectance image is embedded into the fluorescence hyperspectral imagery using (1) light from a narrow-band source embedded in Ultraviolet (UV) excitation light, (2) second order diffracted light, and/or (3) Ultraviolet (UV) excitation light reflectance. Resembling reflectance images are calculated from the reflectance hyperspectral imagery and the embedded reflectance image in the fluorescence hyperspectral imagery. The two respective reflectance images are pre-processed to maximize the resemblance between them.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: February 20, 2007
    Inventors: Holger Lange, Ulf Peter Gustafsson