T2 Relaxation Times of the Limbic System: Comparison of 1.5 T and 3.0 T
LEE S, Kim D, Golay X, Kim J, Kim D, Kim S, Kim E, Kim S
Research Institute of Radiologic Science, Yonsei University College of Medicine
The hippocampus shows higher signal intensity than that of the cingulate gyrus on FLAIR imaging at 1.5 T. T2 relaxation time decreases at 3.0 T with respect to 1.5 T. The purpose of this study was to compare T2 relaxation times in the hippocampus, cingulate gyrus, amygdaloid body, and insular cortex between 1.5 T and 3.0 T MR imagers. In conclusion, T2 relaxation time decrease in the cingulate gyrus was less than the insular cortex, amygdaloid body, and hippocampus at 3.0 T, resulting in relatively higher signal intensity compared with that of the hippocampus on FLAIR at 3.0 T.