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Method of and device for magnetic resonance imaging

  • US 5,800,354 A
  • Filed: 11/23/1994
  • Issued: 09/01/1998
  • Est. Priority Date: 11/23/1994
  • Status: Expired due to Term
First Claim
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1. A method of forming magnetic resonance images of a moving part of a body, which part is arranged in a substantially uniform, steady magnetic field, said method comprising generating MR signals in the body by application of pulse sequences including RF pulses and temporary magnetic gradient fields, and subsequently reconstructing an image from position-dependent information in said MR signals, which method also comprises the following steps:

  • 1) determining a position of the moving part,2) adjusting a position of an image slice to be excited in the body within the uniform magnetic field in conformity with the position determined for the moving part,3) exciting the image slice at the adjusted position to generate MR signals,4) receiving and demodulating the MR signals generated in said image slice, and5) processing the received and demodulated MR signals so as to form an image,wherein in order to determine the position of the moving part the following sub-steps are executed;

    a) separately exciting a part of the body indicative of a movement of the moving part to generate a navigator signal,b) receiving the navigator signal, andc) determining the position of the moving part from the received navigator signal.

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