Prospective optical motion correction for 3D time-of-flight angiography
Version of Record online: 10 AUG 2012
Copyright © 2012 Wiley Periodicals, Inc.
Magnetic Resonance in Medicine
Volume 69, Issue 6, pages 1623–1633, June 2013
How to Cite
Kopeinigg, D., Aksoy, M., Forman, C., Straka, M., Seaman, D., Rosenberg, J., Fleischmann, D., Hornegger, J. and Bammer, R. (2013), Prospective optical motion correction for 3D time-of-flight angiography. Magn Reson Med, 69: 1623–1633. doi: 10.1002/mrm.24423
- Issue online: 16 MAY 2013
- Version of Record online: 10 AUG 2012
- Manuscript Accepted: 27 JUN 2012
- Manuscript Revised: 11 JUN 2012
- Manuscript Received: 11 JAN 2012
- National Institutes of Health. Grant Numbers: 1 R01 EB 11654, 1 R01 EB 8706, 5 R01 EB 2711, 1 R01 EB 6526, R21 EB 6860
- real-time motion correction;
- optical motion correction
Magnetic resonance angiograms are often nondiagnostic due to patient motion. In clinical practice, the available time to repeat motion-corrupted scans is very limited—especially in patients who suffer from acute cerebrovascular conditions. Here, the feasibility of an optical motion correction system to prospectively correct patient motion for 3D time-of-flight magnetic resonance angiography was investigated. Experiments were performed on five subjects with and without parallel imaging (SENSE R = 2) on a 1.5 T unit. Two human readers assessed the data and were in good agreement (kappa: 0.77). The results from this study indicate that the optical motion correction system greatly reduces motion artifacts when motion was present and did not impair the image quality in the absence of motion. Statistical analysis showed no significant difference between the (vendor-provided) SENSE and the nonaccelerated acquisitions. In conclusion, the optical motion correction system tested in this study has the potential to greatly improve 3D time-of-flight angiograms regardless of whether it is used with or without SENSE. Magn Reson Med, 2013. © 2012 Wiley Periodicals, Inc.