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- W2032997306 abstract "Gadolinium enhanced magnetic resonance imaging detects focal blood-brain barrier breakdown in new inflammatory multiple sclerosis lesions, but such lesions do not correlate with disease progression. To explore whether the latter might relate to subtle but widespread blood-brain barrier (BBB) breakdown with low grade inflammation mediating tissue damage, quantitative techniques were used to detect subtle gadolinium enhancement within otherwise normal-appearing white matter and within lesions not showing visible enhancement. T1-weighted imaging was performed prior to and at 5, 20 and 40 min following injection of 0.3 mmol/kg gadopentate dimeglumine in 33 patients with multiple sclerosis and five healthy control subjects. In healthy controls, a significant increase in white matter signal 5 min following contrast injection was observed (1.8%, P < 0.0005); the signal returned to baseline values by 20 min. In multiple sclerosis patients, a non-significant trend was noted for signal to remain elevated in normal-appearing white matter at the 20 and 40 min post-contrast time points; this was most apparent in primary progressive multiple sclerosis. Significant increases in signal intensity were noted at all time points post contrast in apparent non-enhancing lesions. The transient post contrast signal increase in controls is likely due to intravascular gadopentate dimeglumine. The persistent increases in signal intensity in non-enhancing lesions suggest more widespread abnormalities in BBB than is visually apparent, but substantiation of BBB leakage in normal appearing white matter will require further study using more sensitive methods." @default.
- W2032997306 created "2016-06-24" @default.
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- W2032997306 date "2001-04-01" @default.
- W2032997306 modified "2023-10-18" @default.
- W2032997306 title "Quantitative contrast-enhanced magnetic resonance imaging to evaluate blood-brain barrier integrity in multiple sclerosis: a preliminary study" @default.
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- W2032997306 doi "https://doi.org/10.1177/135245850100700201" @default.
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