Patents by Inventor Mohammadreza Negahdar

Mohammadreza Negahdar 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: 11357435
    Abstract: An automatic extraction of disease-specific features from Doppler images to help diagnose valvular diseases is provided. The method includes the steps of obtaining a raw Doppler image from a series of images of an echocardiogram, isolating a region of interest from the raw Doppler image, the region of interest including a Doppler image and an ECG signal, and depicting at least one heart cycle, determining a velocity envelope of the Doppler image in the region of interest, extracting the ECG signal to synchronize the ECG signal with the Doppler image over the at least one heart cycle, within the region of interest, calculating a value of a clinical feature based on the extracted ECG signal synchronized with the velocity envelope, and comparing the value of the clinical feature with clinical guidelines associated with the clinical feature to determine a diagnosis of a disease.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: June 14, 2022
    Assignee: International Business Machines Corporation
    Inventors: David J. Beymer, Mehdi Moradi, Mohammadreza Negahdar, Nripesh Parajuli, Tanveer F. Syeda-Mahmood
  • Publication number: 20220028507
    Abstract: Workflows for automatic measurement of Doppler is provided. In various embodiments, a plurality of frames of a medical video are read. A mode label indicative of a mode of each of the plurality of frames is determined. At least one of the plurality of frames is provided to a trained feature generator. The at least one of the plurality of frames have the same mode label. At least one feature vector is obtained from the trained feature generator corresponding to the at least one of the plurality of frames. At least one feature vector is provided to a trained classifier. A valve label indicative of a valve is obtained from the trained classifier corresponding to the at least one of the plurality of frames. One or more measurement is extracted indicative of a disease condition from those of the at least one of the plurality of frames matching a predetermined valve label.
    Type: Application
    Filed: October 1, 2021
    Publication date: January 27, 2022
    Inventors: Colin Compas, Yaniv Gur, Mehdi Moradi, Mohammadreza Negahdar, Tanveer Syeda-Mahmood
  • Patent number: 11177022
    Abstract: Workflows for automatic measurement of Doppler is provided. In various embodiments, a plurality of frames of a medical video are read. A mode label indicative of a mode of each of the plurality of frames is determined. At least one of the plurality of frames is provided to a trained feature generator. The at least one of the plurality of frames have the same mode label. At least one feature vector is obtained from the trained feature generator corresponding to the at least one of the plurality of frames. At least one feature vector is provided to a trained classifier. A valve label indicative of a valve is obtained from the trained classifier corresponding to the at least one of the plurality of frames. One or more measurement is extracted indicative of a disease condition from those of the at least one of the plurality of frames matching a predetermined valve label.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: November 16, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Colin Compas, Yaniv Gur, Mehdi Moradi, Mohammadreza Negahdar, Tanveer Syeda-Mahmood
  • Patent number: 10617396
    Abstract: Automatic detection of valve disease from analysis of Doppler waveforms exploiting the echocardiography annotations is provided. In various embodiments, a frame is selected from a medical video. The selected frame depicts a valve of interest. A Doppler envelope is extracted from the selected frame. Based on the frame and the Doppler envelope, one or more measurements indicative of a disease condition are extracted.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: April 14, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Mohammadreza Negahdar, Tanveer Syeda-Mahmood
  • Publication number: 20190261880
    Abstract: An automatic extraction of disease-specific features from Doppler images to help diagnose valvular diseases is provided. The method includes the steps of obtaining a raw Doppler image from a series of images of an echocardiogram, isolating a region of interest from the raw Doppler image, the region of interest including a Doppler image and an ECG signal, and depicting at least one heart cycle, determining a velocity envelope of the Doppler image in the region of interest, extracting the ECG signal to synchronize the ECG signal with the Doppler image over the at least one heart cycle, within the region of interest, calculating a value of a clinical feature based on the extracted ECG signal synchronized with the velocity envelope, and comparing the value of the clinical feature with clinical guidelines associated with the clinical feature to determine a diagnosis of a disease.
    Type: Application
    Filed: May 15, 2019
    Publication date: August 29, 2019
    Inventors: David J. Beymer, Mehdi Moradi, Mohammadreza Negahdar, Nripesh Parajuli, Tanveer F. Syeda-Mahmood
  • Patent number: 10362949
    Abstract: An automatic extraction of disease-specific features from Doppler images to help diagnose valvular diseases is provided. The method includes the steps of obtaining a raw Doppler image from a series of images of an echocardiogram, isolating a region of interest from the raw Doppler image, the region of interest including a Doppler image and an ECG signal, and depicting at least one heart cycle, determining a velocity envelope of the Doppler image in the region of interest, extracting the ECG signal to synchronize the ECG signal with the Doppler age over the at least one heart cycle, within the region of interest, calculating a value of a clinical feature based on the extracted ECG signal synchronized with the velocity envelope, and comparing the value of the clinical feature with clinical guidelines associated with the clinical feature to determine a diagnosis of a disease.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 30, 2019
    Assignee: International Business Machines Corporation
    Inventors: David J. Beymer, Mehdi Moradi, Mohammadreza Negahdar, Nripesh Parajuli, Tanveer F. Syeda-Mahmood
  • Publication number: 20180107787
    Abstract: Workflows for automatic measurement of Doppler is provided. In various embodiments, a plurality of frames of a medical video are read. A mode label indicative of a mode of each of the plurality of frames is determined. At least one of the plurality of frames is provided to a trained feature generator. The at least one of the plurality of frames have the same mode label. At least one feature vector is obtained from the trained feature generator corresponding to the at least one of the plurality of frames. At least one feature vector is provided to a trained classifier. A valve label indicative of a valve is obtained from the trained classifier corresponding to the at least one of the plurality of frames. One or more measurement is extracted indicative of a disease condition from those of the at least one of the plurality of frames matching a predetermined valve label.
    Type: Application
    Filed: October 17, 2016
    Publication date: April 19, 2018
    Inventors: Colin Compas, Yaniv Gur, Mehdi Moradi, Mohammadreza Negahdar, Tanveer Syeda-Mahmood
  • Publication number: 20180103931
    Abstract: Automatic detection of valve disease from analysis of Doppler waveforms exploiting the echocardiography annotations is provided. In various embodiments, a frame is selected from a medical video. The selected frame depicts a valve of interest. A Doppler envelope is extracted from the selected frame. Based on the frame and the Doppler envelope, one or more measurements indicative of a disease condition are extracted.
    Type: Application
    Filed: October 17, 2016
    Publication date: April 19, 2018
    Inventors: Mohammadreza Negahdar, Tanveer Syeda-Mahmood
  • Publication number: 20180103914
    Abstract: An automatic extraction of disease-specific features from Doppler images to help diagnose valvular diseases is provided. The method includes the steps of obtaining a raw Doppler image from a series of images of an echocardiogram, isolating a region of interest from the raw Doppler image, the region of interest including a Doppler image and an ECG signal, and depicting at least one heart cycle, determining a velocity envelope of the Doppler image in the region of interest, extracting the ECG signal to synchronize the ECG signal with the Doppler age over the at least one heart cycle, within the region of interest, calculating a value of a clinical feature based on the extracted ECG signal synchronized with the velocity envelope, and comparing the value of the clinical feature with clinical guidelines associated with the clinical feature to determine a diagnosis of a disease.
    Type: Application
    Filed: October 17, 2016
    Publication date: April 19, 2018
    Inventors: David J. Beymer, Mehdi Moradi, Mohammadreza Negahdar, Nripesh Parajuli, Tanveer F. Syeda-Mahmood