Abstract:
:We performed 15 dynamic gadolinium-DTPA (Gd-DTPA)-enhanced MRI studies in 8 patients with relapsing and remitting multiple sclerosis; 7 were follow-up studies. We measured the time course of enhancement in 102 enhancing lesions for up to 384 minutes, with rest breaks. Immediate postcontrast MRIs demonstrated many different patterns of enhancement. We observed both uniformly enhancing and ring enhancing lesions. The enhancing regions were often less extensive than the corresponding high signal on T2-weighted images. Three lesions were seen with Gd-DTPA but not on unenhanced scans; 1 was seen on unenhanced scans 10 days later, suggesting that blood-brain barrier disturbance may precede other MRI signs of MS lesions. Three months later, some high-signal areas on T2-weighted scans had decreased in size to resemble the areas previously outlined by Gd-DTPA. This technique provides useful information about the pathogenesis and behavior of MS lesions.
journal_name
Neurologyjournal_title
Neurologyauthors
Kermode AG,Tofts PS,Thompson AJ,MacManus DG,Rudge P,Kendall BE,Kingsley DP,Moseley IF,du Boulay EP,McDonald WIdoi
10.1212/wnl.40.2.229subject
Has Abstractpub_date
1990-02-01 00:00:00pages
229-35issue
2eissn
0028-3878issn
1526-632Xjournal_volume
40pub_type
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