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Twenty-three patients with relapsing-remitting MS underwent both conventional 3D-FLAIR and compressed sensing 3D-FLAIR on a 3T scanner (reduction in scan time 1 minute 25 seconds, 27%; compressed sensing factor of 1.3). Two blinded readers independently evaluated both conventional and compressed sensing FLAIR for image quality and the number of MS lesions visible in the periventricular, intra-juxtacortical, infratentorial, and optic nerve regions. Image quality and the number of MS lesions detected by the readers were similar between the 2 FLAIR acquisitions. Almost perfect agreement was found between the two FLAIR acquisitions for total MS lesion count. The authors conclude that at 3T, and with a compressed sensing factor of 1.3, 3D-FLAIR is 27% faster and preserves diagnostic performance for the detection of MS plaques.