Comparison of 3D-T2-FFE Sequence and PROSET Sequence in the Display of Lumbosacral Plexus

doi:10.7517/issn.1674-0475.200323

Abstract

Abstract: In this paper, we compared the ability of 3D-T2-FFE sequence and PROSET sequence of displaying the anatomical morphology of lumbosacral plexus. 70 patients with suspected lumbosacral disease were scanned by routine lumbosacral MRI followed by 3D-T2-FFE and PROSET sequence. The scanning results were reconstructed by three-dimensional MIP at the workstation. The display of Lumbosacral plexus nerve by the two methods was compared, and the image signal-to-noise ratio and contrast-to-noise ratio were also compared. The results showed that both 3D-T2-FFE sequence and PROSET sequence could show the course and morphology of lumbosacral plexus nerve, but PROSET sequence could show the anatomical structure and details of lumbosacral nerve root, ganglion and postganglionic nerve fiber more clearly than 3D-T2-FFE sequence. The signal-to-noise ratio and contrast-to-noise ratio of PROSET were higher than those of 3D-T2-FFE (P<0.05). The disadvantage of 924 PROSET is that the scanning time is longer (about 283 s), while the 3D-T2-FFE sequence scan speed is much faster (about 182 s), which is easier for the patients to tolerate. In clinical work, reasonable selection of scanning sequence combined with conventional MR sequence can provide more evidence for the diagnosis of lumbosacral plexus neuropathy.

Key words: lumbosacral plexus, 3D-T2-FFE, PROSET sequence, MRI, 3D

ZHAO Shengxiang, WANG Zhao, ZHANG Xijun, ZHANG Weizhong. Comparison of 3D-T2-FFE Sequence and PROSET Sequence in the Display of Lumbosacral Plexus[J]. Imaging Science and Photochemistry, 2020, 38(5): 924-928.

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