Patents by Inventor Mihir Pendse

Mihir Pendse 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: 20200142057
    Abstract: A DeepSAR method is provided in which local SAR is predicted using a three-dimensional convolutional neural network (CNN). More specifically, a patient-specific local specific absorption rate (SAR) prediction method is provided. A three-dimensional convolutional neural network (CNN) is trained using pairs of SAR maps and B1+ maps for different channel weights. The CNN has an input and an output, and is then provided as a computational device to compute SAR maps. As input to the trained CNN, measured B1+ maps, simulated B1+ maps or a combination thereof are used. The trained CNN then computes and output SAR maps in a form of a generative adversarial network (GAN) to predict a three-dimensional real-valued SAR map with both real and imaginary components to be used for various applications in high field Magnetic Resonance Imaging (MRI).
    Type: Application
    Filed: November 6, 2019
    Publication date: May 7, 2020
    Inventors: Mihir Pendse, Brian Rutt
  • Patent number: 10641855
    Abstract: Obtaining minimum duration parallel transmit pulses for simultaneous multislice imaging that includes minimizing specific absorption rate hotspots, using an IMPULSE pTx optimization method to determine multiple spoke locations and multiple channel weights for multiple slices while enforcing a specified flip angle inhomogeneity tolerance over the multiple slices when excited, applying a control algorithm to conform a simultaneous multislice (SMS) pulse to the excited multiple slices to minimize a cost function having terms corresponding to an excitation accuracy and a pulse power, where a regularization term in the cost function is configured by the control algorithm for excitation accuracy while limiting a peak pulse power, and applying a time-optimal variable rate selective excitation (VERSE) to enforce a peak power constraint with a minimum pulse duration by reshaping a RF waveform and a gradient waveform without altering an excitation profile if the peak power limit on a channel is exceeded.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 5, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Mihir Pendse, Brian Rutt
  • Publication number: 20180120398
    Abstract: Obtaining minimum duration parallel transmit pulses for simultaneous multislice imaging that includes minimizing specific absorption rate hotspots, using an IMPULSE pTx optimization method to determine multiple spoke locations and multiple channel weights for multiple slices while enforcing a specified flip angle inhomogeneity tolerance over the multiple slices when excited, applying a control algorithm to conform a simultaneous multislice (SMS) pulse to the excited multiple slices to minimize a cost function having terms corresponding to an excitation accuracy and a pulse power, where a regularization term in the cost function is configured by the control algorithm for excitation accuracy while limiting a peak pulse power, and applying a time-optimal variable rate selective excitation (VERSE) to enforce a peak power constraint with a minimum pulse duration by reshaping a RF waveform and a gradient waveform without altering an excitation profile if the peak power limit on a channel is exceeded.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 3, 2018
    Inventors: Mihir Pendse, Brian Rutt