General Electric Company

Michael Thomas Rose

Margaret Ann Wiza

Melissa Freeman

Douglas John Link

Viswanathan Kanakasabai

Juan Antonio Sabate

Rajendra Naik

Jayanti Navilgone Ganesh

Louis Martin Frigo

Andrew John Panos

Syed Saad Asif Ali

Tanzania Samone Sewell

Scott Richard Weber

A method of handling a peak power requirement of a medical imaging deviceis presented. The method includes determining, using at least one controlling unit, a first voltage corresponding to a direct current (DC) link, a second voltage corresponding to one or more energy storage devices, or a combination thereof, where a power sourceis coupled to a plurality of loads via the DC link, and the energy storage devices are coupled to the DC link. Further, the method includes comparing, using the at least one controlling unit, the first voltage with a first reference value and the second voltage with a second reference value and regulating, using at least one controlling unit, at least one of the first voltage and the second voltage based on the comparison, to handle the peak power requirement of the medical imaging device.

Systems and methods for handling peak power requirements of a medical imaging device

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.

System and method for supplying electrical power to a gradient amplifier

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.

Method and apparatus for non-invasive assessment of ripple cancellation filter

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.

Method and apparatus for active load impedance monitoring

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.

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Wauwatosa, WI, United States of America

Michael Thomas Rose