公开(公告)号：US12174281B2

公开(公告)日：2024-12-24

申请号：US17947761

申请日：2022-09-19

Applicant: Regents of the University of Minnesota ,  Duke University

Inventor： Oren Solomon ,  Noam Harel ,  Guillermo Sapiro ,  Edward Auerbach ,  Steen Moeller ,  Remi Patriat ,  Henry Braun ,  Tara Palnitkar

IPC: G01R33/565 ,  A61B5/055 ,  G01R33/56

Abstract: A system and method are provided for creating magnetic resonance (MR) images with reduced motion artifacts from the MR data from which the images are produced. The method includes selecting a candidate image from a plurality of candidate images reconstructed from the MR data. The method also includes registering the candidate image to a reference image, comparing the candidate image to a consistency map, and, based on comparing the candidate image using the consistency map, selecting a blending algorithm. The method also includes generating a blended image using the blending algorithm and the candidate image and repeating these steps for each candidate image. The method also includes performing a Fourier aggregation to generate a combined image and displaying the combined image with reduced motion artifacts compared to the plurality of candidate images.

公开(公告)号：US20230136320A1

公开(公告)日：2023-05-04

申请号：US17947761

申请日：2022-09-19

Applicant: Regents of the University of Minnesota ,  Duke University

Inventor： Oren Solomon ,  Noam Harel ,  Guillermo Sapiro ,  Edward Auerbach ,  Steen Moeller ,  Remi Patriat ,  Henry Braun ,  Tara Palnitkar

IPC: G01R33/56 ,  A61B5/055

Abstract: A system and method are provided for creating magnetic resonance (MR) images with reduced motion artifacts from the MR data from which the images are produced. The method includes selecting a candidate image from a plurality of candidate images reconstructed from the MR data. The method also includes registering the candidate image to a reference image, comparing the candidate image to a consistency map, and, based on comparing the candidate image using the consistency map, selecting a blending algorithm. The method also includes generating a blended image using the blending algorithm and the candidate image and repeating these steps for each candidate image. The method also includes performing a Fourier aggregation to generate a combined image and displaying the combined image with reduced motion artifacts compared to the plurality of candidate images.

公开(公告)号：US10901053B2

公开(公告)日：2021-01-26

申请号：US16364382

申请日：2019-03-26

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Yigitcan Eryaman ,  Gregor Adriany ,  Noam Harel ,  Gregory F. Molnar

IPC: G01V3/00 ,  G01R33/28 ,  G01R33/483 ,  A61B5/055 ,  G01R19/00

Abstract: Systems and method for measuring and mitigating radio frequency (“RF”) induced currents on electrical leads, electrodes, and other electrically conductive objects present in the bore of a magnetic resonance imaging (“MRI”) scanner when the MRI scanner is operated to image an object or subject are described. The methods described in the present disclosure can be implemented as a pre-scan procedure to obtain images from which the current induced on the electrical lead can be estimated. This information can then be used to adjust the RF excitation used in a subsequent pulse sequence to mitigate induced currents and reduce heating in the lead. As such, the methods described in the present disclosure provide for improved patient safety.

公开(公告)号：US20190293737A1

公开(公告)日：2019-09-26

申请号：US16364382

申请日：2019-03-26

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Yigitcan Eryaman ,  Gregor Adriany ,  Noam Harel ,  Gregory F. Molnar

IPC: G01R33/28 ,  G01R33/483 ,  G01R19/00 ,  A61B5/055

Abstract: Systems and method for measuring and mitigating radio frequency (“RF”) induced currents on electrical leads, electrodes, and other electrically conductive objects present in the bore of a magnetic resonance imaging (“MRI”) scanner when the MRI scanner is operated to image an object or subject are described. The methods described in the present disclosure can be implemented as a pre-scan procedure to obtain images from which the current induced on the electrical lead can be estimated. This information can then be used to adjust the RF excitation used in a subsequent pulse sequence to mitigate induced currents and reduce heating in the lead. As such, the methods described in the present disclosure provide for improved patient safety.