Algorithms for extracting motion information from navigator echoes Academic Article Article uri icon


MeSH Major

  • Breast Diseases
  • Calcinosis
  • Radiographic Image Enhancement
  • Radiographic Image Interpretation, Computer-Assisted


  • Algorithms to reliably detect motion in navigator echoes are crucial to many MRI motion suppression techniques. The accuracy of these algorithms is affected by noise and deformation of navigator echo profile caused by physiologic motion. This study compared the performance of algorithms based on correlation and least squares for extracting displacement information from motion-monitoring navigator echoes, using computer simulation and in vivo imaging. The least squares algorithm was determined to be of higher accuracy than the correlation algorithm against errors caused by noise and profile deformation.

publication date

  • July 1996



  • Academic Article


Digital Object Identifier (DOI)

  • 10.1002/mrm.1910360120

PubMed ID

  • 8795030

Additional Document Info

start page

  • 117

end page

  • 23


  • 36


  • 1