Figure 3. Plot of mean (±standard deviation) signal intensity against echo time (TE) (a) before and (b) after contrast administration for the central region. The differences in pre- and post-enhancement signal intensity were significant at each TE (p<0.001). The differences in signal intensity are greatest at the shortest TE. There is an increase in signal in (b) following contrast administration (46% at TE=0.08 ms).