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Respiratory gating method for MR imaging

  • US 6,144,874 A
  • Filed: 10/15/1998
  • Issued: 11/07/2000
  • Est. Priority Date: 10/15/1998
  • Status: Expired due to Fees
First Claim
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1. A method for acquiring NMR image data from a subject during a scan with an MRI system, the steps comprising:

  • a) monitoring the respiration of the subject;

    b) producing a first gating signal when subject respiration is within a preselected narrow acquisition window;

    c) producing a second gating signal when subject respiration is within a preselected wide acquisition window;

    d) acquiring NMR image data from a central region of k-space when the first gating signal is produced;

    e) acquiring NMR image data from a peripheral region of k-space when the second gating signal is produced; and

    f) repeating steps a) through e) until sufficient NMR image data is acquired from the central and peripheral regions of k-space to reconstruct an image.

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