Prospective motion correction in brain imaging: A review
Article first published online: 8 MAY 2012
Copyright © 2012 Wiley Periodicals, Inc.
Magnetic Resonance in Medicine
Volume 69, Issue 3, pages 621–636, 1 March 2013
How to Cite
Maclaren, J., Herbst, M., Speck, O. and Zaitsev, M. (2013), Prospective motion correction in brain imaging: A review. Magn Reson Med, 69: 621–636. doi: 10.1002/mrm.24314
- Issue published online: 21 FEB 2013
- Article first published online: 8 MAY 2012
- Manuscript Accepted: 4 APR 2012
- Manuscript Revised: 30 MAR 2012
- Manuscript Received: 23 JAN 2012
- German Federal Ministry of Education and Research (INUMAC project). Grant Number: 01EQ0605
- prospective motion correction;
- motion tracking
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. Magn Reson Med, 2013. © 2012 Wiley Periodicals, Inc.