B3) white & pial surface errors due to Virchow-Robin spaces
Note:Many HCP-Development subjects have Issues B1b and/or B2b. We see a high frequency of surface imperfections due to white and pial surface outlines being pulled away from the boundaries than in HCA subjects. We have yet to identify the reasons why this is the case in HCP-D and not in HCP-A.
This image is an example of something that is seen in many HCD subjects and not often, if at all, in HCA.
QC Issue C: Myelin Map Notable Quality Issues (beyond those caused by surface imperfections covered by issue code B)
Myelin maps generated by the HCP structural pipeline from the T1w and T2w images were inspected by a rater for any notable issues.