CONCLUSIONS: Most of the MRI GD enhanced lesions disappear in 4 weeks. Very few can last more than 2 years.
Of the 298 enhanced MRI lesions 207 (69.5%) lasted less than 4 weeks, 251 (84.2%) 8 weeks, and 272 (91.3%) 12 weeks.
Another thing we’re learning is that lesions have a lifespan. Generally they appear, then later they disappear. If we have the luxury of scanning someone on a weekly basis, we can see lesions going away over time. Something we’ve found out with MR is that the longer a lesion shows Gd-enhancement, the more likely it is that the lesion will have axonal damage. The life of a Gd enhancing lesion is three to four weeks on average, but if it lasts six, eight, ten weeks, it’s more likely we will see more severe tissue damage there.
Scoobyjude wrote:I just was confused when it was said that they disappeared after a short period. Actually I'm still confused but that's nothing new. Thanks
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