Paper Info
Title
Physiological noise compensation in gradient-echo myelin water imaging.
Abstract
In MRI, physiological noise which originates from cardiac and respiratory functions can induce substantial errors in detecting small signals in the brain. In this work, we explored the effects of the physiological noise and their compensation methods in gradient-echo myelin water imaging (GRE-MWI). To reduce the cardiac function induced inflow noise, flow saturation RF pulses were applied to the inferior portion of the head, saturating inflow blood signals. For the respiratory function induced B0 fluctuation compensation, a navigator echo was acquired, and respiration induced phase errors were corrected during reconstruction. After the compensations, the resulting myelin water images show substantially improved image quality and reproducibility. These improvements confirm the importance and usefulness of the physiological noise compensations in GRE-MWI.
Year
DOI
Venue
2015
10.1016/j.neuroimage.2015.07.014
NeuroImage
Keywords
DocType
Volume
Myelin water imaging,White matter,MWF,Physiological noise,Flow saturation,B0 navigator
Journal
120
ISSN
Citations 
PageRank 
1053-8119
8
0.57
References 
Authors
11
3
Name
Order
Citations
PageRank
Yoonho Nam1253.70
Dong-Hyun Kim2396.05
Jongho Lee3746.15