Radiology
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Comparative Study
Detection of simulated multiple sclerosis lesions on T2-weighted and FLAIR images of the brain: observer performance.
To determine observer performance in the detection of multiple sclerosis (MS) lesions on magnetic resonance (MR) images of the brain and to assess the dependence of observer performance on lesion size, parenchymal location, pulse sequence, and supratentorial versus infratentorial level. ⋯ Supratentorially, performance was better with FLAIR imaging than with T2-weighted MR imaging. Infratentorially, performance was moderate with both modalities. Observers did better with FLAIR imaging in the detection of cortical lesions, and performance improved with increasing lesion size.