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Abstract

Rapid MR imaging of the pediatric brain using the fast spin-echo technique.

S S Ahn, M T Mantello, K M Jones, R V Mulkern, P S Melki, N Higuchi and P D Barnes
American Journal of Neuroradiology July 1992, 13 (4) 1169-1177;
S S Ahn
Department of Radiology, Children's Hospital, Boston, MA 02115.
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M T Mantello
Department of Radiology, Children's Hospital, Boston, MA 02115.
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K M Jones
Department of Radiology, Children's Hospital, Boston, MA 02115.
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R V Mulkern
Department of Radiology, Children's Hospital, Boston, MA 02115.
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P S Melki
Department of Radiology, Children's Hospital, Boston, MA 02115.
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N Higuchi
Department of Radiology, Children's Hospital, Boston, MA 02115.
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P D Barnes
Department of Radiology, Children's Hospital, Boston, MA 02115.
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Abstract

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.

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American Journal of Neuroradiology
Vol. 13, Issue 4
1 Jul 1992
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Rapid MR imaging of the pediatric brain using the fast spin-echo technique.
S S Ahn, M T Mantello, K M Jones, R V Mulkern, P S Melki, N Higuchi, P D Barnes
American Journal of Neuroradiology Jul 1992, 13 (4) 1169-1177;

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Rapid MR imaging of the pediatric brain using the fast spin-echo technique.
S S Ahn, M T Mantello, K M Jones, R V Mulkern, P S Melki, N Higuchi, P D Barnes
American Journal of Neuroradiology Jul 1992, 13 (4) 1169-1177;
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