Here we see an image taken by LASCO on Oct 08 1999, 09:42 UT.  The loop structure is clearly seen in this image, with whiter shades depicting areas of higher electron density.

    This is the same CME eruption, taken by LASCO on Oct 08 1999, 01:26 UT.  The loop structure can still be seen, but it is not as clearly defined as the earlier image.