Fig. 1: Methods for segmenting T2-weighted axial ocular MRI. | Eye

Fig. 1: Methods for segmenting T2-weighted axial ocular MRI.

From: Automated MRI-based quantification of posterior ocular globe flattening and recovery after long-duration spaceflight

Fig. 1

A MR images were radially resliced, and B automatically segmented. C Zoomed in view of the posterior globe (green square on B), showing the sclera (hypointense region), the putative retinal/choroidal complex, and the boundary identified by our segmentation scheme (red curve). D 3D reconstructed downsampled point cloud, and E the registration of point clouds. F Example of pre- and postflight distance maps and the resulting differential displacement map for the posterior surface of one eye with notable globe flattening, within the 4 mm region of interest (blue circle) around the optic nerve head on the displacement map (colour figure online).

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