Real-time correction by optical tracking with integrated geometric distortion correction for reducing motion artifacts in functional MRI.

Journal article

Head motion artifacts are a major problem in functional MRI that limit its use in neuroscience research and clinical settings. Real-time scan-plane correction by optical tracking has been shown to correct slice misalignment and nonlinear spin-history artifacts; however, residual artifacts due to dynamic magnetic field nonuniformity may remain in the data. A recently developed correction technique, Phase Labeling for Additional Coordinate Encoding, can correct for absolute geometric distortion...

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Authors: Rotenberg, D; Chiew, M; Ranieri, S; Tam, F; Chopra, R

• Journal: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine
• Volume: 69
• Issue: 3
• Pages: 734-748
• Publication date: 2013-03-01
• DOI: 10.1002/mrm.24309
• EISSN: 1522-2594
• ISSN: 0740-3194
• Language: English
• Keywords: Brain; Systems Integration; Magnetic Resonance Imaging; Motion; Equipment Failure Analysis; Photography; Adult; Sensitivity and Specificity; Male; Brain Mapping; Artifacts; Optical Devices; Young Adult; Computer Systems; Equipment Design; Reproducibility of Results; Image Enhancement; Humans