Sideband processing for magnetic resonance

• US 9,880,243 B2
• Filed: 06/19/2012
• Issued: 01/30/2018
• Est. Priority Date: 06/20/2011
• Status: Active Grant

• Current Assignee: Regents of The University of Minnesota (University of Minnesota)
• Original Assignee: Regents of The University of Minnesota (University of Minnesota)
• Inventors: Corum, Curtis A., Moeller, Steen, Idiyatullin, Djaudat S., Chamberlain, Ryan, Garwood, Michael G.
• Primary Examiner(s): KOVAL, MELISSA J
• Assistant Examiner(s): Patel, Rishi
• Application Number:
  US13/527,283
• Publication Number:
  US 20130043867A1
• Time in Patent Office: 2,051 Days
• Field of Search: 324300-322
• CPC Class Codes: G01R 33/4616 using specific RF pulses or specific modulation schemes, e.g. stochastic excitation, adiabatic RF pulses, composite pulses, binomial pulses, Shinnar-le-Roux pulses, spectrally selective pulses not being used for spatial selection

Abstract

A method includes applying a pulse train to a spin system in a scanner. The pulse train has a plurality of discontinuities in a time domain. The method includes receiving a response from the spin system. The response corresponds to a gated signal. The method includes accessing a correction factor corresponding to the scanner. The method includes calculating a correction to the response based on the correction factor. The method includes generating an output based on the correction.

Claims

1. A method comprising:

applying a pulse train to a spin system in a scanner, the pulse train having a plurality of discontinuities in a time domain;

receiving a plurality of responses from the spin system, each response of the plurality of responses including baseband content and sideband content;

generating a correction factor based on the baseband content and the sideband content, wherein generating the correction factor includes processing a first response of the plurality of responses and processing a second response of the plurality of responses wherein a gate position of a transmitter and a receiver for the first response is time shifted relative to the gate position of the transmitter and receiver for the second response;

calculating a correction based on the correction factor; and

generating an image based on the correction.

2. The method of claim 1 wherein generating the correction factor includes processing oversampled data corresponding to the plurality of responses.

3. The method of claim 1 wherein generating the correction factor includes calculating an interpolation operator corresponding to the plurality of responses.

4. The method of claim 1 wherein generating the correction factor includes generating an interpolation operator.

5. The method of claim 4 wherein generating the interpolation operator includes generating a GRAPPA kernel.