Analysis of the effect of MR3D-STIR SPACE sequence enhancement scan on the postganglionic nerve imaging of brachial plexus
Objective To explore the clinical value and imaging quality of MR3D-STIR SPACE sequence enhanced scan in the postganglionic nerve imaging of brachial plexus.Methods 50 patients with brachial plexus from January 2021 to August 2022 were selected to undergo routine MR sequence scanning,MR3D-SPACE-STIR sequence plain scanning and enhanced scanning.The corre-lation between the injury site,shape,signal intensity and the proximal and distal brachial plexus of the patients was analyzed,and the image quality was compared with plain scan and enhanced image.Results The sensitivity,specificity and accuracy of MRI in the di-agnosis of postganglionic nerve injury were 89.47％,83.33％and 88.64％,respectively.The tissue contrast of enhanced MR3D-SPACE-STIR was significantly improved.After processing,the walking image of brachial plexus after ganglion could be completely dis-played.In addition,the contrast noise ratio(CNR)of the enhanced sequence images was(0.57±0.09),the background suppression score(3.56±0.63),and the brachial plexus display score(3.96±0.53)was significantly different from that of plain scan(0.35± 0.06),(1.58±0.51),and(2.02±0.59)(t=12.231,12.214,10.170;P＜0.05).Conclusion The enhanced MR 3D-SPACE-STIR sequence has a better effect on background suppression,which can clearly show the brachial plexus injury and its shape,and its post-ganglionic image quality is significantly improved compared with that of plain scan.
Postganglionic nerve imaging of brachial plexusMR3D-STIR SPACE sequenceEnhanced scanningDiagnostic effect
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