The following images are from the 7008 dataset, from the REST3DTSE05X05X05_8 scan. The following image is slice 23 along the Z-axis from that dataset. The arrow points to the graft, which seems to be filled with some material that is showing up white in the MRI:

This image is slice 70, with the arrow pointing at the other graft, which has the normal dark lumen area:

All the other REST datasets I've seen have a dark lumen in the grafts, and I was just wondering if there is some foreign material in the graft, or if it could be a MRI artifact. I also wanted to make sure that it was the left graft in this image that the ReGel was implanted around.