Patents by Inventor Michael E. Casey

Michael E. Casey 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).

  • Publication number: 20220148236
    Abstract: An image reconstruction system generates a motion estimation using images that have been reconstructed using AI processing. The system receives listmode data collected by an imaging system and produces two or more histo-images based on the listmode data. The system provides the two or more histo-images to an AI system and receives two or more AI reconstructed images back from the AI system based on the two or more histo-images. The system generates a motion estimation based on the two or more AI reconstructed images.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 12, 2022
    Inventors: Deepak Bharkhada, Chuanyu Zhou, Vladimir Panin, William Whiteley, Jicun Hu, Michael E. Casey
  • Publication number: 20210405226
    Abstract: Systems and methods to partially-gate PET data include acquisition of first data describing a plurality of coincidences detected during a scan of an object, each of the plurality of coincidences associated with a coincidence time and a line of response, acquisition of a motion signal associated with motion of the object during the scan, determination of lines of response which are associated with a region of the object, determination of time periods of region motion based on the motion signal, modification of the first data to remove coincidences which are associated with the determined lines of response and which are associated with a coincidence time during a time period of region motion, reconstruction of an image of the object based on the modified first data, and display of the image.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 30, 2021
    Inventors: Jicun Hu, Matthew Restivo, Inki Hong, Vladimir Panin, Frank Kehren, Michael E. Casey
  • Patent number: 11103199
    Abstract: A method of conducting a multi-pass dynamic positron emission tomography (PET) scans using continuous bed motion (CBM) mode is disclosed where the method involves acquiring PET sinogram data using CBM mode as the patient bed is moving in a first direction; acquiring PET sonogram data using CBM mode as the patient bed is moving in a second direction that is opposite from the first direction; and reconstructing 3-D PET image from the acquired PET sonogram data.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 31, 2021
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Jicun Hu, Vladimir Y. Panin, Anne M. Smith, William Curtis Howe, Vijay Shah, Frank Kehren, Michael E. Casey, Matthew Baker, Bernard Bendriem
  • Patent number: 10722189
    Abstract: A method of processing and reconstructing dynamic positron emission tomography (PET) sinogram data comprises: acquiring PET sinogram data using continuous bed motion having a varying velocity; recording a plurality of position-time coordinate pairs while acquiring the PET sinogram data; determining respective acquisition times of each of a plurality of slices of the image, based on the plurality of position-time coordinates; and reconstructing respective parametric images for each respective slice in the plurality of slices.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: July 28, 2020
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Jicun Hu, Vladimir Y. Panin, Anne M. Smith, William Curtis Howe, Vijay Shah, Frank Kehren, Michael E. Casey, Matthew Baker, Bernard Bendriem
  • Publication number: 20190059831
    Abstract: A method of processing and reconstructing dynamic positron emission tomography (PET) sinogram data comprises: acquiring PET sinogram data using continuous bed motion having a varying velocity; recording a plurality of position-time coordinate pairs while acquiring the PET sinogram data; determining respective acquisition times of each of a plurality of slices of the image, based on the plurality of position-time coordinates; and reconstructing respective parametric images for each respective slice in the plurality of slices.
    Type: Application
    Filed: August 30, 2017
    Publication date: February 28, 2019
    Inventors: Jicun Hu, Vladimir Y. Panin, Anne M. Smith, William Curtis Howe, Vijay Shah, Frank Kehren, Michael E. Casey, Matthew Baker, Bernard Bendriem
  • Publication number: 20180303438
    Abstract: A method of conducting a multi-pass dynamic positron emission tomography (PET) scans using continuous bed motion (CBM) mode is disclosed where the method involves acquiring PET sinogram data using CBM mode as the patient bed is moving in a first direction; acquiring PET sonogram data using CBM mode as the patient bed is moving in a second direction that is opposite from the first direction; and reconstructing 3-D PET image from the acquired PET sonogram data.
    Type: Application
    Filed: March 23, 2018
    Publication date: October 25, 2018
    Inventors: Jicun Hu, Vladimir Y. Panin, Anne M. Smith, William Curtis Howe, Vijay Shah, Frank Kehren, Michael E. Casey, Matthew Baker, Bernard Bendriem
  • Patent number: 9953442
    Abstract: A method includes overlaying a grid on a set of dynamic PET, SPECT, CT or MR data, so as to define a set of voxels defining a plurality of cluster seeds; extracting a respective time activity curve (TAC) for dynamic PET or SPECT data or time varying signals in the case of dynamic CT or MR data, for each voxel based on the data; selecting a subset of the cluster seeds defined by the grid as initial cluster centroids of a set of clusters; assigning each TAC to a respective cluster in the set of clusters; computing a respective average TAC of each cluster; generating a parametric image based on the respective average TACs for the clusters; repeating the overlaying, determining, selecting, assigning, computing, and generating; and averaging the generated parametric images.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: April 24, 2018
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Harshali Bal, Vladimir Y. Panin, Michael E. Casey
  • Patent number: 9645261
    Abstract: Normalization coefficients in are computed for positron emission tomography (PET) continuous bed motion acquisition (CBM). The normalization coefficients for the lines-of-response in CBM account for the change in decay of the injected isotope over time and/or changes in velocity of the bed motion.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: May 9, 2017
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Vladimir Y. Panin, Michael E. Casey
  • Publication number: 20170084060
    Abstract: A method includes overlaying a grid on a set of dynamic PET, SPECT, CT or MR data, so as to define a set of voxels defining a plurality of cluster seeds; extracting a respective time activity curve (TAC) for dynamic PET or SPECT data or time varying signals in the case of dynamic CT or MR data, for each voxel based on the data; selecting a subset of the cluster seeds defined by the grid as initial cluster centroids of a set of clusters; assigning each TAC to a respective cluster in the set of clusters; computing a respective average TAC of each cluster; generating a parametric image based on the respective average TACs for the clusters; repeating the overlaying, determining, selecting, assigning, computing, and generating; and averaging the generated parametric images.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 23, 2017
    Inventors: Harshali Bal, Vladimir Y. Panin, Michael E. Casey
  • Patent number: 9262844
    Abstract: Methods and systems for processing data for medical imaging are disclosed. The method includes obtaining a set of continuous bed motion (CBM) data from a first imaging modality. The set of CBM data includes a plurality of gating signals. A CBM normalization matrix is calculated. The CBM normalization matrix calculation includes the plurality of gating signals. An image is reconstructed from the CBM data and the CBM normalization matrix. The first imaging modality can be a PET imaging device.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 16, 2016
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Jicun Hu, Vladimir Y. Panin, Frank Kehren, Michael E. Casey
  • Patent number: 9217795
    Abstract: Apparatuses and methods are provided that minimize the effects of dark-current pulses. For example, in one embodiment of the invention, a method is provided where a first pixel is struck (i.e., a primary pixel). Pixels struck within a fixed time frame after the primary pixel is struck are referred to as secondary pixels. After a short fixed time frame has expired, the number of primary and secondary pixels is added. If the count exceeds a threshold, the primary pixel was activated by the first (or early) photon from a true gamma event. If the threshold is not met then it is likely the primary pixel generated a dark pulse that should be ignored.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: December 22, 2015
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Peter Hansen, Michael E. Casey, Stefan B. Siegel
  • Publication number: 20150302613
    Abstract: Methods and systems for processing data for medical imaging are disclosed. The method includes obtaining a set of continuous bed motion (CBM) data from a first imaging modality. The set of CBM data includes a plurality of gating signals. A CBM normalization matrix is calculated. The CBM normalization matrix calculation includes the plurality of gating signals. An image is reconstructed from the CBM data and the CBM normalization matrix. The first imaging modality can be a PET imaging device.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 22, 2015
    Inventors: Jicun Hu, Vladimir Y. Panin, Frank Kehren, Michael E. Casey
  • Patent number: 8913810
    Abstract: Methods, and systems therefrom, for generating images from time of flight (TOF) data associated with a scan of at least one object using a positron emission tomography system are provided. The method includes providing initial values for an activity image to yield a current activity image. The method also includes estimating initial values for an attenuation map (?-map) image based on the TOF data to yield a current ?-map image. The method further includes repeating, until at least one termination condition is met, the steps of updating the current activity image based on at least the current ?-map and a first update algorithm and updating the current ?-map image based on at least on the updated activity image and a second update algorithm. The method also includes outputting an image of the at least one object based on the current ?-map and the current activity image.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: December 16, 2014
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Vladimir Y. Panin, Michael E. Casey
  • Publication number: 20140200848
    Abstract: Normalization coefficients in are computed for positron emission tomography (PET) continuous bed motion acquisition (CBM). The normalization coefficients for the lines-of-response in CBM account for the change in decay of the injected isotope over time and/or changes in velocity of the bed motion.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Vladimir Y. Panin, Michael E. Casey
  • Publication number: 20140029715
    Abstract: Apparatuses and methods are provided that minimize the effects of dark-current pulses. For example, in one embodiment of the invention, a method is provided where a first pixel is struck (i.e., a primary pixel). Pixels struck within a fixed time frame after the primary pixel is struck are referred to as secondary pixels. After a short fixed time frame has expired, the number of primary and secondary pixels is added. If the count exceeds a threshold, the primary pixel was activated by the first (or early) photon from a true gamma event. If the threshold is not met then it is likely the primary pixel generated a dark pulse that should be ignored.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 30, 2014
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Peter Hansen, Michael E. Casey, Stefan B. Siegel
  • Patent number: 8565856
    Abstract: A medical imaging device has an emission tomograph, at least one ultrasonic (US) probe for providing images giving real-time information about the location of the internal organs of a subject, a tracking system for spatially locating the at least one ultrasonic probe in relation to the medical imaging device, and an image processing unit in which the location information obtained by the ultrasonic probe is used for attenuation correction of image information obtained by the emission tomograph.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: October 22, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: James J. Hamill, G√ľnther Platsch, Michael E. Casey
  • Patent number: 8538112
    Abstract: Methods and computer-readable mediums are provided. In one embodiment, the method acquires patient data. The peak value in the patient data is determined. The patient data is divided into two data segments (i.e., one data segment representing the data before the peak value occurs and a second data segment representing the patient data after the peak occurs). The slopes of the first and second data segments are calculated. Thereafter the slopes are used to determine an appropriate adaptive framing protocol. A number of frames and duration of each frame in the adaptive framing protocol can be calculated or the adaptive framing protocol can be selected from a plurality of framing protocols. Embodiments of the invention also include computer-readable mediums that contain features similar to the features in the above described method.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: September 17, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Judson P. Jones, Michael E. Casey
  • Patent number: 8509504
    Abstract: Point spread function (PSF) radial filtering in a line of response space. Modeling a radial component, R, of a point spread filter as a function of at least a radial projection index ?, a radial image space coordinate r, and an azimuth ?. The index ? is characterized by an asymmetrical Gaussian distribution having where ?left(r) and ?right(r) derived from point source measurements, and an adjustment ?J(r, ?) estimated from point source sinogram by Josephs' projector.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 13, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Michael E. Casey, Vladimir Y. Panin
  • Patent number: 8457381
    Abstract: Using complementary reconstruction, images from short time frames may be generated for positron emission tomography. Detected events are gathered over a long period, such as three minutes. The detected events from a short period, such as one or two seconds, are removed. Reconstruction is performed on the detected events from the long period and another reconstruction is performed on the detected events from the long period without the detected events from the short period. The second reconstruction is subtracted from the first, providing data representing the short period. The data may result in better image quality than merely reconstructing an individual frame for the short period.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: June 4, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Inki Hong, Michael E Casey, Christian J Michel
  • Publication number: 20130058551
    Abstract: Using complementary reconstruction, images from short time frames may be generated for positron emission tomography. Detected events are gathered over a long period, such as three minutes. The detected events from a short period, such as one or two seconds, are removed. Reconstruction is performed on the detected events from the long period and another reconstruction is performed on the detected events from the long period without the detected events from the short period. The second reconstruction is subtracted from the first, providing data representing the short period. The data may result in better image quality than merely reconstructing an individual frame for the short period.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 7, 2013
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Inki Hong, Michael E. Casey, Christian J. Michel