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PT  - JOURNAL ARTICLE
AU  - Ahn, S S
AU  - Mantello, M T
AU  - Jones, K M
AU  - Mulkern, R V
AU  - Melki, P S
AU  - Higuchi, N
AU  - Barnes, P D
TI  - Rapid MR imaging of the pediatric brain using the fast spin-echo technique.
DP  - 1992 Jul 01
TA  - American Journal of Neuroradiology
PG  - 1169--1177
VI  - 13
IP  - 4
4099  - http://www.ajnr.org/content/13/4/1169.short
4100  - http://www.ajnr.org/content/13/4/1169.full
SO  - Am. J. Neuroradiol.1992 Jul 01; 13
AB  - PURPOSE To evaluate diagnostic reliability and to establish optimal scanning techniques of a recently developed Fast Spin-echo MR pulse sequence that allows rapid proton density-weighted and T2-weighted imaging.METHODS We compared lesion conspicuity and signal intensity measurements on Fast Spin-echo and conventional spin-echo sequences in 81 patients ranging from 1 week to 25 years in age on a 1.5-T MR unit. A total of 28 Fast Spin-echo dual-echo images (14 slice locations) were obtained in 2:08 minutes with a 256 x 128 matrix or in 3:12 minutes with a 256 x 192 matrix at a TR of 2000 msec and two excitations.RESULTS Lesion conspicuity and characterization on Fast Spin-echo images compared favorably with conventional spin-echo images in our series when pseudo-TEs of 15 and 90 msec were employed for proton density-weighted and T2-weighted images, respectively. Fast Spin-echo images yielded diagnostic information in four nonsedated patients whose conventional spin-echo images were either degraded by motion or unobtainable. Fat signal remained bright on T2-weighted Fast Spin-echo images. Magnetic-susceptibility effects were slightly reduced with Fast Spin-echo but did not pose any diagnostic problem in our series.CONCLUSION Diagnostically reliable rapid dual-echo brain images can be obtained with Fast Spin-echo sequences.