OIL FLAIR: optimized interleaved fluid-attenuated inversion recovery in 2D fast spin echo.
Inversion recovery may be used to suppress signal from cerebrospinal fluid, a technique which has been named "fluid attenuated with inversion recovery" (FLAIR). This report describes interleaving a slice selective inversion pulse within a rapid spin-echo sequence to obtain the desirable contrast characteristics of FLAIR in imaging times comparable to standard rapid spin echo. Additionally, the pulse repetition time is allowed to float above a defined minimum, which can further shorten scan times and dramatically ease the optimization process. The optimized interleaved sequence is referred to as OIL FLAIR.
Listerud
J
J
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
Mitchell
J
J
Bagley
L
L
Grossman
R
R
D002490:Central Nervous System / Q000033:anatomy & histology; D002555:Cerebrospinal Fluid / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*