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MR imaging method and apparatus for guiding a catheter

  • US 5,810,728 A
  • Filed: 03/18/1997
  • Issued: 09/22/1998
  • Est. Priority Date: 04/03/1993
  • Status: Expired due to Fees
First Claim
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1. A MR imaging method comprising:

  • generating a plurality of sequences, each comprising one or more RF pulses and one or more magnetic gradient fields, which act on an examination zone to produce MR signals from which successive MR images can be constructed showing, over time, a region of a body including a moveable part;

    receiving the MR signals produced;

    reconstructing successive MR images from the MR signals received;

    automatically successively analyzing a plurality of the reconstructed MR images to determine the position of the moveable part in each current MR image being analyzed; and

    after each determination of position of the moveable part in a current MR image being analyzed, automatically adjusting a variation in time of at least one of the RF pulses and magnetic gradient fields for subsequent sequences in dependence on the determined position for producing the MR signals from which the next MR image of the successive MR images will be reconstructed.

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