公开(公告)号：US10067203B2

公开(公告)日：2018-09-04

申请号：US14879775

申请日：2015-10-09

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jayanti Ganesh ,  Juan Antonio Sabate ,  Rajendra Naik ,  Margaret Ann Wiza ,  Viswanathan Kanakasabai ,  Michael Thomas Rose

IPC: H02J3/00 ,  G01R33/36 ,  A61B5/055 ,  G01R33/385 ,  G01R33/389 ,  H02J9/06 ,  H02M7/04 ,  G01R33/28

Abstract: The present disclosure relates possible implementations for utilizing energy storage elements in conjunction with a MRI system. Similarly, various associated control mechanisms are discussed. In certain embodiments, one or both of peak power shaving or energy backup may be facilitated by use of the energy storage elements. Certain such implementations may facilitate the use of higher-power MRI systems with an existing electrical infrastructure.

公开(公告)号：US10310038B2

公开(公告)日：2019-06-04

申请号：US15163193

申请日：2016-05-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Margaret Ann Wiza ,  Melissa Jean Freeman ,  Syed Saad Asif Ali ,  Douglas John Link ,  Michael Thomas Rose ,  Tanzania Samone Sewell

IPC: G01R33/385

Abstract: A method for supplying electrical power to a gradient amplifier that drives a gradient coil for a magnetic resonance imaging system is provided. The method includes predicting a gradient voltage required to drive the gradient coil for a scan based at least in part on a gradient coil model. The method further includes calculating a voltage set point for a power supply based at least in part on the predicted gradient voltage. The method further includes providing electrical power to the gradient amplifier via the power supply based at least in part on the calculated voltage set point. The gradient coil model is based at least in part on historical data acquired prior to the scan.

公开(公告)号：US10247795B2

公开(公告)日：2019-04-02

申请号：US14585554

申请日：2014-12-30

Applicant: General Electric Company

Inventor： Louis Martin Frigo ,  Melissa Jean Freeman ,  Margaret Ann Wiza ,  Douglas Link ,  Michael Thomas Rose ,  Scott Richard Weber ,  Andrew John Panos

IPC: G01R33/385 ,  G01R33/38

Abstract: A method that includes deriving a first power spectral density function of a signal input to a ripple cancellation filter; deriving a second power spectral density function of a signal concurrently output from the ripple cancellation filter; frequency shaping the first power spectral density according to a spectral rejection image of the ripple cancellation filter to obtain a test power spectral density; and indicating a degraded performance of the ripple cancellation filter in the event that the test and second power spectral density functions fail to match within pre-determined criteria.

公开(公告)号：US10132852B2

公开(公告)日：2018-11-20

申请号：US14585813

申请日：2014-12-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Margaret Ann Wiza ,  Louis Martin Frigo ,  Melissa Jean Freeman ,  Douglas Link ,  Michael Thomas Rose ,  Andrew John Panos

IPC: G01R31/06 ,  G01R33/385 ,  G01R31/44

Abstract: An apparatus that includes a power amplifier; a load that is operatively connected to be electrically driven from the power amplifier; and an impedance monitor that is configured to in real-time identify a favorable segment within an output waveform of the power amplifier, model the baseline power spectral density of a load driven by the power amplifier during the identified segment of the output waveform, sample an empirical power spectral density of the load during the identified segment of the output waveform, and indicate a load fault in the event that the empirical power spectral density deviates from the baseline power spectral density beyond at least one pre-determined error criteria.

公开(公告)号：US20170102441A1

公开(公告)日：2017-04-13

申请号：US14879775

申请日：2015-10-09

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jayanti Ganesh ,  Juan Antonio Sabate ,  Rajendra Naik ,  Margaret Ann Wiza ,  Viswanathan Kanakasabai ,  Michael Thomas Rose

IPC: G01R33/36 ,  H02J9/06 ,  G01R33/389 ,  H02M7/04 ,  A61B5/055 ,  G01R33/385

CPC classification number: G01R33/36 ,  A61B5/055 ,  G01R33/28 ,  G01R33/3614 ,  G01R33/3852 ,  G01R33/389 ,  H02J9/061 ,  H02M7/04

Abstract: The present disclosure relates possible implementations for utilizing energy storage elements in conjunction with a MRI system. Similarly, various associated control mechanisms are discussed. In certain embodiments, one or both of peak power shaving or energy backup may be facilitated by use of the energy storage elements. Certain such implementations may facilitate the use of higher-power MRI systems with an existing electrical infrastructure.