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      Prospective motion correction in brain imaging: a review.

      1 , , ,
      Magnetic resonance in medicine
      Wiley

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          Abstract

          Motion correction in magnetic resonance imaging by real-time adjustment of the imaging pulse sequence was first proposed more than 20 years ago. Recent advances have resulted from combining real-time correction with new navigator and external tracking mechanisms capable of quantifying rigid-body motion in all 6 degrees of freedom. The technique is now often referred to as "prospective motion correction." This article describes the fundamentals of prospective motion correction and reviews the latest developments in its application to brain imaging and spectroscopy. Although emphasis is placed on the brain as the organ of interest, the same principles apply whenever the imaged object can be approximated as a rigid body. Prospective motion correction can be used with most MR sequences, so it has potential to make a large impact in clinical routine. To maximize the benefits obtained from the technique, there are, however, several challenges still to be met. These include practical implementation issues, such as obtaining tracking data with minimal delay, and more fundamental problems, such as the magnetic field distortions caused by a moving object. This review discusses these challenges and summarizes the state of the art. We hope that this work will motivate further developments in prospective motion correction and help the technique to reach its full potential.

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          Author and article information

          Journal
          Magn Reson Med
          Magnetic resonance in medicine
          Wiley
          1522-2594
          0740-3194
          Mar 01 2013
          : 69
          : 3
          Affiliations
          [1 ] Medical Physics, Department of Radiology, University Medical Center Freiburg, Freiburg, Germany. jmacl@stanford.edu
          Article
          10.1002/mrm.24314
          22570274
          4d52d846-2cee-423e-8d45-9eb9dc28a95a
          Copyright © 2012 Wiley Periodicals, Inc.
          History

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