CSF Signal as a Complex-Valued RETROICOR Regressor Removes Unwanted Physiological Signal and Increases the Accuracy of Spatial Correlation in Complex-Valued fMRI
Document Type
Conference Proceeding
Language
eng
Publication Date
2016
Publisher
International Society for Magnetic Resonance in Medicine
Source Publication
Proceedings of the International Society for Magnetic Resonance in Medicine Scientific Meeting and Exhibition
Source ISSN
1545-4428
Abstract
Discarding the phase component of the time-series removes relevant biological information from a complex-valued signal. Although, commonly implemented retrospective image correction techniques fail to account for physiological artifacts in both the magnitude and phase components of the time-series. Using the CSF signal, observed during the data acquisition, as a complex-valued regressor increases the statistical power of fMRI analysis, through reducing unwanted physiological variability in the complex-valued signal of interest. The improved performance of implementing the complex-valued image correction methods is demonstrated with a comparison of magnitude-only and complex-valued spatial correlations.
Recommended Citation
Kociuba, Mary C. and Rowe, Daniel B., "CSF Signal as a Complex-Valued RETROICOR Regressor Removes Unwanted Physiological Signal and Increases the Accuracy of Spatial Correlation in Complex-Valued fMRI" (2016). Mathematics, Statistics and Computer Science Faculty Research and Publications. 458.
https://epublications.marquette.edu/mscs_fac/458
Comments
Published as part of the proceedings of the International Society for Magnetic Resonance in Medicine 24th Annual Meeting, 2016. Publisher link.