Fig. 3From: Automated segmentation of cerebral deep gray matter from MRI scans: effect of field strength on sensitivity and reliabilityManual (expert) segmentation overlaid with automated segmentation output (white areas) of the caudate nucleus in a healthy 33Â year-old control subject from 1.5T (upper row) and 3T (lower row) 3D T1-weighted MRI scans. The total DGM volume was 36.6Â ml at 1.5T and 38.9Â ml at 3T. For illustrative purposes, the ground truth contours are shown in both red and yellow colors. Automated segmentation was performed by the fully automated FSL-FIRST pipeline. The 3T automated output typically provided a larger and more accurate contour than 1.5T. At 1.5T, the interface between the caudate and the medial aspects of the ventricular CSF is underestimated vs. 3T. The interface between the caudate and the adjacent (lateral) white matter appears to be captured similarly at both field strengthsBack to article page