T(1) and T(2) selective method for improved SNR in CSF-attenuated imaging: T(2)-FLAIR.
We present here a method for improving SNR in CSF-attenuated imaging relative to the standard technique of using an inversion pulse and imaging at the null point of CSF. In this new method the inversion pulse is replaced with a 90(x)-180(y)-90(x) preparation sequence that provides T(1) and T(2) selectivity. This allows the tissue magnetization to recover more rapidly, allows for the use of shorter TR values, and reduces T(1) weighting. Magn Reson Med 45:529-532, 2001.
Wong
E C
EC
University of California, San Diego, San Diego, California, USA. ecwong@ucsd.edu
Liu
T T
TT
Luh
W M
WM
Frank
L R
LR
Buxton
R B
RB
D001810:Blood Volume; D001921:Brain / Q000473:pathology*; D002555:Cerebrospinal Fluid; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008432:Mathematical Computing; D012016:Reference Values; D012680:Sensitivity and Specificity