Hybrid prospective and retrospective head motion correction to mitigate cross-calibration errors

Aksoy M, Forman C, Straka M, Cukur T, Hornegger J, Bammer R (2012)

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Magnetic Resonance in Medicine Wiley

Original Authors: Aksoy M., Forman C., Straka M., Çukur T., Hornegger J., Bammer R.

Publisher: Wiley-Blackwell

Book Volume: 67

Pages Range: 1237-1251

Journal Issue: 5

DOI: 10.1002/mrm.23101

Abstract

Utilization of external motion tracking devices is an emerging technology in head motion correction for MRI. However, cross-calibration between the reference frames of the external tracking device and the MRI scanner can be tedious and remains a challenge in practical applications. In this study, we present two hybrid methods, both of which combine prospective, optical-based motion correction with retrospective entropy-based autofocusing to remove residual motion artifacts. Our results revealed that in the presence of cross-calibration errors between the optical tracking device and the MR scanner, application of retrospective correction on prospectively corrected data significantly improves image quality. As a result of this hybrid prospective and retrospective motion correction approach, the requirement for a high-quality calibration scan can be significantly relaxed, even to the extent that it is possible to perform external prospective motion tracking without any prior cross-calibration step if a crude approximation of cross-calibration matrix exists. Moreover, the motion tracking system, which is used to reduce the dimensionality of the autofocusing problem, benefits the retrospective approach at the same time. Copyright © 2011 Wiley Periodicals, Inc.

Authors with CRIS profile

Christoph Forman Lehrstuhl für Informatik 14 (Bild- und Sprachverarbeitung) Joachim Hornegger Lehrstuhl für Informatik 14 (Bild- und Sprachverarbeitung)

Involved external institutions

Stanford University US United States (USA) (US) University of California, Berkeley US United States (USA) (US)

How to cite

APA:

Aksoy, M., Forman, C., Straka, M., Cukur, T., Hornegger, J., & Bammer, R. (2012). Hybrid prospective and retrospective head motion correction to mitigate cross-calibration errors. Magnetic Resonance in Medicine, 67(5), 1237-1251. https://dx.doi.org/10.1002/mrm.23101

MLA:

Aksoy, Murat, et al. "Hybrid prospective and retrospective head motion correction to mitigate cross-calibration errors." Magnetic Resonance in Medicine 67.5 (2012): 1237-1251.

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