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Method for monitoring respiration with acquired NMR data

  • US 4,994,743 A
  • Filed: 10/27/1989
  • Issued: 02/19/1991
  • Est. Priority Date: 10/27/1989
  • Status: Expired due to Term
First Claim
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1. A system for providing respiratory phase information during an NMR scan of a subject, which comprises:

  • means for producing an NMR motion pulse sequence during the NMR image data scan;

    means for acquiring the NMR motion signals produced by said NMR motion pulse sequence;

    means for processing the motion NMR signals to produce a data set which indicates the position of features in the subject;

    means for locating the position of a specific feature in said data set; and

    means for producing a respiratory signal by correlating the current position of the specific feature with a reference position for that feature.

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