We compared the quality of CSF flow images of ten subjects acquired with T2-weighted flow-void, phase-contrast, and tag-based MR methods. Tag-based methods included the variable image contrast TimeSLIP sequence and a newly designed method, termed TimeSTAMP, with constant contrast. Five radiologists and one neurosurgeon rated them on usefulness for identifying flow with a Likert scale: 5=highest to 1=lowest. Flow was detectable with high confidence for TimeSLIP and TimeSTAMP (4.8 ± 0.2), confidence was significantly lower (p<0.0001) in flow-void (2.5 ± 0.7) and phase-contrast (2.6 ± 0.5) images.
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