Motion detection from the measured signals in magnetic resonance imaging

R. Van De Walle*, I. Lemahieu, J. Peynsaert, Y. De Deene, E. Achten

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We present a new quantitative method to determine motion intervals in projection reconstruction (PR) magnetic resonance imaging. The method does not use any a priori information concerning the motion. In the first section, the theoretical concept of the method is described. It is shown that the phase of the complex mean of a one-dimensional PR signal equals zero when no motion is present. When the depicted object is moving, it differs from zero. These conclusions are used to determine motion intervals from the raw PR data. The motion-detection method proves to be able to detect motion intervals with an accuracy of one repetition time.

Original languageEnglish
Pages (from-to)375-379
Number of pages5
JournalSignal Processing
Issue number3
Publication statusPublished - Dec 1996
Externally publishedYes


  • Image processing
  • Magnetic resonance imaging
  • Motion detection


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